https://restorerivers.eu/wiki/api.php?action=feedcontributions&feedformat=atom&user=Tbgmiseg 2026-04-05T23:53:24Z User contributions MediaWiki 1.39.7 https://restorerivers.eu/wiki/index.php?title=Case_study:Enabling_migration_of_anadromous_salmonids_in_the_river_Merkedamselva&diff=47873 2021-02-16T12:35:09Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.29525203168966, 10.22084790522244<br /> }}<br /> {{Project overview<br /> |Status=Planned<br /> |Themes=Environmental flows and water resources, Habitat and biodiversity, Hydropower, Hydromorphology, Social benefits<br /> |Country=Norway<br /> |Main contact forename=Miguel A.<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Aulivassdraget<br /> |Contact organisation url=www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/aulivassdraget/<br /> |Multi-site=No<br /> |Project picture=Borgen moelle 2.4.2020.jpg<br /> |Project title=Enabling migration of anadromous salmonids in the river Merkedamselva<br /> }}<br /> {{Image gallery}}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Case study documents<br /> |File name=Konsekvensutredning laksetrapp borgen moelle 2006.pdf<br /> }}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=File:Konsekvensutredning_laksetrapp_borgen_moelle_2006.pdf&diff=47872 2021-02-16T12:34:59Z

<p>Tbgmiseg: </p> <hr /> <div></div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=File:Borgen_moelle_2.4.2020.jpg&diff=47871 2021-02-16T12:33:08Z

<p>Tbgmiseg: Tbgmiseg uploaded a new version of File:Borgen moelle 2.4.2020.jpg</p> <hr /> <div>Borgen dam on the 2th of april 2020. Picture: Miguel A. Segarra Valls</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Enabling_migration_of_anadromous_salmonids_in_the_river_Merkedamselva&diff=47870 2021-02-16T12:31:23Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.29525203168966, 10.22084790522244<br /> }}<br /> {{Project overview<br /> |Status=Planned<br /> |Themes=Environmental flows and water resources, Habitat and biodiversity, Hydropower, Hydromorphology, Social benefits<br /> |Country=Norway<br /> |Main contact forename=Miguel A.<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Aulivassdraget<br /> |Contact organisation url=www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/aulivassdraget/<br /> |Multi-site=No<br /> |Project picture=Borgen moelle 2.4.2020.jpg<br /> |Project title=Enabling migration of anadromous salmonids in the river Merkedamselva<br /> }}<br /> {{Image gallery}}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=File:Borgen_moelle_2.4.2020.jpg&diff=47869 2021-02-16T12:31:16Z

<p>Tbgmiseg: Borgen dam on the 2th of april 2020. Picture: Miguel A. Segarra Valls</p> <hr /> <div>Borgen dam on the 2th of april 2020. Picture: Miguel A. Segarra Valls</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Enabling_migration_of_anadromous_salmonids_in_the_river_Merkedamselva&diff=47868 2021-02-16T12:24:55Z

<p>Tbgmiseg: Created page with &quot;{{Case study status |Approval status=Draft }} {{Location |Location=59.29525203168966, 10.22084790522244 }} {{Project overview |Project title=Enabling migration of anadromous s...&quot;</p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.29525203168966, 10.22084790522244<br /> }}<br /> {{Project overview<br /> |Project title=Enabling migration of anadromous salmonids in the river Merkedamselva<br /> |Status=Planned<br /> |Themes=Environmental flows and water resources, Habitat and biodiversity, Hydropower, Hydromorphology, Social benefits<br /> |Country=Norway<br /> |Main contact forename=Miguel A.<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Aulivassdraget<br /> |Contact organisation url=www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/aulivassdraget/<br /> |Multi-site=No<br /> }}<br /> {{Image gallery}}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Reopening_of_Mj%C3%B8ll%C3%B8st_stream&diff=47867 2021-02-16T10:39:50Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.159716249856416, 10.260887850104385<br /> }}<br /> {{Project overview<br /> |Status=Planned<br /> |Themes=Habitat and biodiversity, Land use management - agriculture, Monitoring<br /> |Country=Norway<br /> |Main contact forename=Miguel A.<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Partner organisations=Sandefjord kommune, Sandefjord Forvaltningsråd for Anadrom Laksefisk<br /> |Multi-site=No<br /> |Project picture=Mjollostbekken 1959-79 (venstre) 2017 (hoyre).jpg<br /> |Project summary=Mjølløst stream is part of a 17 km long stream system.<br /> Mjølløst stream has since the 1960s had a 270 meter long stream closure that prevents sea trout from accessing a 1.4 km stream stretch. The concrete pipe is getting closer to the end of its lifetime and might collapse in the next years if nothing is done. Landowner, local and regional authorities are positive to remove the culvert and restore the original stream. This project got funding from Norwegian Environment Agency (Miljødirektoratet) in 2020 and we intend to implement it in 2021, if it is technically possible (see &quot;Lessons learnt&quot;).<br /> |Monitoring surveys and results=Results electrofishing October 2020 (before reopening of the stream):<br /> <br /> Station 1 (downstreams closure): 141 trout / 100 m2.<br /> Station 2 (upstreams closure): 1 trout / 100m2.<br /> Station 3 (200 m ustreams closuse): 57 trout / 100m2.<br /> <br /> Fish from upstream stations (2 and 3) is stationary trout introduced by local people from other locations.<br /> |Lessons learn=1. Because of its proximity to the railway (&lt; 30 m) it is required an approval from the railway authorities (Bane-Nor) in order to be able to daylight / deculvert the stream.<br /> 2. There can be quick clay (kvikkleire) in the area of restoration according to NVE (Norwegian Water Resources and Energy Directorate). This makes necessary to explore the ground stability before digging the pipe out of the ground. This will increase considerably the costs of the project.<br /> |Project title=Reopening of Mjølløst stream<br /> }}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Mjollost 1 (downtreams) october 2020.jpg<br /> }}<br /> {{Case study image<br /> |File name=Mjollost 2 (upstreams) october 2020.jpg<br /> }}<br /> {{Case study image<br /> |File name=Mjollost 3 (upstreams) october 2020.jpg<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site<br /> |WFD water body code=NO014-113-R<br /> |WFD (national) typology=REL2321<br /> |WFD water body name=Unnebergsbekken bekkefelt<br /> |Heavily modified water body=No<br /> |Local site designation=Unnebergsbekken, Frombekken, Mjølløstbekken<br /> |Protected species present=No<br /> |Invasive species present=Yes<br /> |Species=Sea trout (Salmo trutta), European eel (Anguilla anguilla),<br /> |Dominant hydrology=Perennial Flashy (PF)<br /> |Mn discharge=0.03<br /> }}<br /> {{Project background<br /> |Reach length directly affected=270<br /> |Project started=2020/03/01<br /> |Total1 cost=100<br /> |Funding sources=The Norwegian Environmental Agency (Miljødirektoratet),<br /> |Invst and design cost=20<br /> |Wrk and supervision cost=70<br /> |Post-project2 management and maintenance cost=5<br /> |Monitoring2 cost=5<br /> |Supplementary funding information=Preliminary estimates.<br /> }}<br /> {{Motivations<br /> |Specific mitigation=Sea trout migration<br /> |Hydromorphological quality elements=Closure of stream<br /> |Biological quality elements=Fish,<br /> |Physico-chemical quality elements=Not relevant<br /> }}<br /> {{Measures<br /> |Bank and bed modifications measure=Reopening of culverted river,<br /> |Social measures=Planting riparian vegetation with school pupils.<br /> }}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{Biological quality element table row<br /> |Element=Fish: Abundance<br /> |Monitored before=Yes<br /> |Monitored after=No<br /> |Qualitative monitoring=No<br /> |Quantitative monitoring=Yes<br /> |Control site used=No<br /> }}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Case study documents<br /> |File name=Project deculverting Mjollost stream.pdf<br /> |Description=Description of the culverted stream, and initial technical proposal for deculverting (in Norwegian)<br /> }}<br /> {{Case study documents<br /> |File name=GJEaaPNING AV MJoLoSTBEKKEN - kommentarer NLR.pdf<br /> |Description=Kommentarer fra NLR<br /> }}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=File:GJEaaPNING_AV_MJoLoSTBEKKEN_-_kommentarer_NLR.pdf&diff=47866 2021-02-16T10:39:17Z

<p>Tbgmiseg: Kommentarer NLR</p> <hr /> <div>Kommentarer NLR</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Reopening_of_Mj%C3%B8ll%C3%B8st_stream&diff=47865 2021-02-16T10:36:48Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.159716249856416, 10.260887850104385<br /> }}<br /> {{Project overview<br /> |Status=Planned<br /> |Themes=Habitat and biodiversity, Land use management - agriculture, Monitoring<br /> |Country=Norway<br /> |Main contact forename=Miguel A.<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Partner organisations=Sandefjord kommune, Sandefjord Forvaltningsråd for Anadrom Laksefisk<br /> |Multi-site=No<br /> |Project picture=Mjollostbekken 1959-79 (venstre) 2017 (hoyre).jpg<br /> |Project summary=Mjølløst stream is part of a 17 km long stream system.<br /> Mjølløst stream has since the 1960s had a 270 meter long stream closure that prevents sea trout from accessing a 1.4 km stream stretch. The concrete pipe is getting closer to the end of its lifetime and might collapse in the next years if nothing is done. Landowner, local and regional authorities are positive to remove the culvert and restore the original stream. This project got funding from Norwegian Environment Agency (Miljødirektoratet) in 2020 and we intend to implement it in 2021, if it is technically possible (see &quot;Lessons learnt&quot;).<br /> |Monitoring surveys and results=Results electrofishing October 2020 (before reopening of the stream):<br /> <br /> Station 1 (downstreams closure): 141 trout / 100 m2.<br /> Station 2 (upstreams closure): 1 trout / 100m2.<br /> Station 3 (200 m ustreams closuse): 57 trout / 100m2.<br /> <br /> Fish from upstream stations (2 and 3) is stationary trout introduced by local people from other locations.<br /> |Lessons learn=1. Because of its proximity to the railway (&lt; 30 m) it is required an approval from the railway authorities (Bane-Nor) in order to be able to daylight / deculvert the stream.<br /> 2. There can be quick clay (kvikkleire) in the area of restoration according to NVE (Norwegian Water Resources and Energy Directorate). This makes necessary to explore the ground stability before digging the pipe out of the ground. This will increase considerably the costs of the project.<br /> |Project title=Reopening of Mjølløst stream<br /> }}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Mjollost 1 (downtreams) october 2020.jpg<br /> }}<br /> {{Case study image<br /> |File name=Mjollost 2 (upstreams) october 2020.jpg<br /> }}<br /> {{Case study image<br /> |File name=Mjollost 3 (upstreams) october 2020.jpg<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site<br /> |WFD water body code=NO014-113-R<br /> |WFD (national) typology=REL2321<br /> |WFD water body name=Unnebergsbekken bekkefelt<br /> |Heavily modified water body=No<br /> |Local site designation=Unnebergsbekken, Frombekken, Mjølløstbekken<br /> |Protected species present=No<br /> |Invasive species present=Yes<br /> |Species=Sea trout (Salmo trutta), European eel (Anguilla anguilla),<br /> |Dominant hydrology=Perennial Flashy (PF)<br /> |Mn discharge=0.03<br /> }}<br /> {{Project background<br /> |Reach length directly affected=270<br /> |Project started=2020/03/01<br /> |Total1 cost=100<br /> |Funding sources=The Norwegian Environmental Agency (Miljødirektoratet),<br /> |Invst and design cost=20<br /> |Wrk and supervision cost=70<br /> |Post-project2 management and maintenance cost=5<br /> |Monitoring2 cost=5<br /> |Supplementary funding information=Preliminary estimates.<br /> }}<br /> {{Motivations<br /> |Specific mitigation=Sea trout migration<br /> |Hydromorphological quality elements=Closure of stream<br /> |Biological quality elements=Fish,<br /> |Physico-chemical quality elements=Not relevant<br /> }}<br /> {{Measures<br /> |Bank and bed modifications measure=Reopening of culverted river,<br /> |Social measures=Planting riparian vegetation with school pupils.<br /> }}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{Biological quality element table row<br /> |Element=Fish: Abundance<br /> |Monitored before=Yes<br /> |Monitored after=No<br /> |Qualitative monitoring=No<br /> |Quantitative monitoring=Yes<br /> |Control site used=No<br /> }}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Case study documents<br /> |File name=Project deculverting Mjollost stream.pdf<br /> |Description=Description of the culverted stream, and initial technical proposal for deculverting (in Norwegian)<br /> }}<br /> {{Case study documents<br /> |File name=GJEaaPNING AV MJoLoSTBEKKEN - kommentarer NLR.pdf<br /> }}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=File:GJEaaPNING_AV_MJoLoSTBEKKEN_-_komentarer_NLR.pdf&diff=47864 2021-02-16T10:36:37Z

<p>Tbgmiseg: Kommentarer fra NLR</p> <hr /> <div>Kommentarer fra NLR</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Improving_migration_of_anadromous_salmonids_in_Unneberg_stream&diff=47863 2021-02-16T10:26:42Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.15361346964452, 10.244179137818703<br /> }}<br /> {{Project overview<br /> |Status=Complete<br /> |Themes=Habitat and biodiversity, Monitoring<br /> |Country=Norway<br /> |Main contact forename=Miguel A.<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Multi-site=Yes<br /> |Project title=Improving migration of anadromous salmonids in Unneberg stream<br /> }}<br /> {{Image gallery}}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Case study documents<br /> |File name=Not Unnebergbekken Forslag til tiltak ifm gammel dam J02.pdf<br /> }}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=File:Not_Unnebergbekken_Forslag_til_tiltak_ifm_gammel_dam_J02.pdf&diff=47862 2021-02-16T10:26:30Z

<p>Tbgmiseg: </p> <hr /> <div></div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Improving_migration_of_anadromous_salmonids_in_Unneberg_stream&diff=47861 2021-02-16T10:25:52Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.15361346964452, 10.244179137818703<br /> }}<br /> {{Project overview<br /> |Status=Complete<br /> |Themes=Habitat and biodiversity, Monitoring<br /> |Country=Norway<br /> |Main contact forename=Miguel A.<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Multi-site=Yes<br /> |Project title=Improving migration of anadromous salmonids in Unneberg stream<br /> }}<br /> {{Image gallery}}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Improving_migration_of_anadromous_salmonids_in_Unneberg_stream&diff=47860 2021-02-16T10:25:12Z

<p>Tbgmiseg: Created page with &quot;{{Case study status |Approval status=Draft }} {{Location |Location=59.15361346964452, 10.244179137818703 }} {{Project overview |Project title=Improving migration of anadromous...&quot;</p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.15361346964452, 10.244179137818703<br /> }}<br /> {{Project overview<br /> |Project title=Improving migration of anadromous salmonids in Unneberg stream<br /> |Status=Complete<br /> |Themes=Monitoring<br /> |Country=Norway<br /> |Main contact forename=Miguel A.<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Multi-site=Yes<br /> }}<br /> {{Image gallery}}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Djupsund_stream&diff=47859 2021-02-16T09:22:39Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.120474576059955, 10.261882763422117<br /> }}<br /> {{Project overview<br /> |Status=In progress<br /> |Themes=Habitat and biodiversity, Social benefits, Spatial planning<br /> |Country=Norway<br /> |Main contact forename=Miguel Angel<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=https://www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Partner organisations=Sandefjord Forvaltningsråd for Anadrom Laksefisk<br /> |Multi-site=No<br /> |Project picture=Djupsund stream before and after daylighting.png<br /> |Project summary=The Djupsund stream is a very small but very important stram for sea trout in the fjord Mefjorden (Sandefjord municipality), and it has been described as &quot;a small sea trout machine&quot;. The upper part of the stream was culverted with pipes that were too small, and this caused problems for crossing way when strong rainfall episodes occurred. Around 80 m of the stream were daylighted, and a new 1 m diameter pipe was installed under the way in December 2020. Gravel was used to cover parts of daylighted stream and the bottom of the pipe under the crossing way.<br /> <br /> We intend to restore the riparian vegetation along the daylighted stream during spring 2021, in cooperation with pupils from a nearby school.<br /> |Monitoring surveys and results=The recolonization of the new stream stretch by sea trout will be monitored from 2021.<br /> |Lessons learn=New research shows that the ideal amount of spawning gravel in a stream is 20 % of the habitat (https://lakseelver.no/nb/news-2019/utlegg-av-gytegrus). We covered much more of the reopened stream, and will consider to take measures in order to increase the habitat variation.<br /> |Project title=Deculverting Djupsund stream<br /> }}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 2.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 1.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=New pipe under way that crosses Djupsund stream.jpg<br /> |Caption=New pipe under way that crosses Djupsund stream. Picture by Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Sea tout at the opening of the old culvert in Djupsund stream.jpg<br /> |Caption=Sea tout at the opening of the old culvert in Djupsund stream (before restauration).Picture by Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Description restauration project in Djupsund Stream.png<br /> |Caption=Description restauration project in Djupsund Stream. Record: Norconsult<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site<br /> |Name=Djupsundbekken<br /> |WFD water body code=EU-ID:NO015-1467-R<br /> |WFD (national) typology=R110<br /> |WFD water body name=Djupsundbekken<br /> |Heavily modified water body=No<br /> |Protected species present=No<br /> |Invasive species present=No<br /> }}<br /> {{Project background<br /> |Project started=2020/01/15<br /> |Works started=2021/02/15<br /> |Funding sources=Miljødirektoratet<br /> |Invst and design cost=1.2<br /> |Wrk and supervision cost=9<br /> |Post-project2 management and maintenance cost=3<br /> |Monitoring2 cost=5<br /> }}<br /> {{Motivations<br /> |Hydromorphological quality elements=Continuity for organisms,<br /> |Biological quality elements=Fish,<br /> }}<br /> {{Measures<br /> |Bank and bed modifications measure=Re-introducing spawning gravel,<br /> |Floodplain / River corridor=Bigger diameter pipe under way<br /> |Other technical measure=Deculverting,<br /> }}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Case study documents<br /> |File name=Not Djupsundbekken gjennapning J02.pdf<br /> |Description=Description of the culverted stream, and initial technical proposals for deculverting (in Norwegian)<br /> }}<br /> {{Case study documents<br /> |File name=SFFAL rapport dugnadsarbeid Djupsund.pdf<br /> }}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=File:SFFAL_rapport_dugnadsarbeid_Djupsund.pdf&diff=47858 2021-02-16T09:22:34Z

<p>Tbgmiseg: Contribution to the project from local association SFFAL (in Norwegian)</p> <hr /> <div>Contribution to the project from local association SFFAL (in Norwegian)</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Djupsund_stream&diff=47857 2021-02-16T09:04:17Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.120474576059955, 10.261882763422117<br /> }}<br /> {{Project overview<br /> |Status=In progress<br /> |Themes=Habitat and biodiversity, Social benefits, Spatial planning<br /> |Country=Norway<br /> |Main contact forename=Miguel Angel<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=https://www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Partner organisations=Sandefjord Forvaltningsråd for Anadrom Laksefisk<br /> |Multi-site=No<br /> |Project picture=Djupsund stream before and after daylighting.png<br /> |Project summary=The Djupsund stream is a very small but very important stram for sea trout in the fjord Mefjorden (Sandefjord municipality), and it has been described as &quot;a small sea trout machine&quot;. The upper part of the stream was culverted with pipes that were too small, and this caused problems for crossing way when strong rainfall episodes occurred. Around 80 m of the stream were daylighted, and a new 1 m diameter pipe was installed under the way in December 2020. Gravel was used to cover parts of daylighted stream and the bottom of the pipe under the crossing way.<br /> <br /> We intend to restore the riparian vegetation along the daylighted stream during spring 2021, in cooperation with pupils from a nearby school.<br /> |Monitoring surveys and results=The recolonization of the new stream stretch by sea trout will be monitored from 2021.<br /> |Lessons learn=New research shows that the ideal amount of spawning gravel in a stream is 20 % of the habitat (https://lakseelver.no/nb/news-2019/utlegg-av-gytegrus). We covered much more of the reopened stream, and will consider to take measures in order to increase the habitat variation.<br /> |Project title=Deculverting Djupsund stream<br /> }}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 2.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 1.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=New pipe under way that crosses Djupsund stream.jpg<br /> |Caption=New pipe under way that crosses Djupsund stream. Picture by Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Sea tout at the opening of the old culvert in Djupsund stream.jpg<br /> |Caption=Sea tout at the opening of the old culvert in Djupsund stream (before restauration).Picture by Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Description restauration project in Djupsund Stream.png<br /> |Caption=Description restauration project in Djupsund Stream. Record: Norconsult<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site<br /> |Name=Djupsundbekken<br /> |WFD water body code=EU-ID:NO015-1467-R<br /> |WFD (national) typology=R110<br /> |WFD water body name=Djupsundbekken<br /> |Heavily modified water body=No<br /> |Protected species present=No<br /> |Invasive species present=No<br /> }}<br /> {{Project background<br /> |Project started=2020/01/15<br /> |Works started=2021/02/15<br /> |Funding sources=Miljødirektoratet<br /> |Invst and design cost=1.2<br /> |Wrk and supervision cost=9<br /> |Post-project2 management and maintenance cost=3<br /> |Monitoring2 cost=5<br /> }}<br /> {{Motivations<br /> |Hydromorphological quality elements=Continuity for organisms,<br /> |Biological quality elements=Fish,<br /> }}<br /> {{Measures<br /> |Bank and bed modifications measure=Re-introducing spawning gravel,<br /> |Floodplain / River corridor=Bigger diameter pipe under way<br /> |Other technical measure=Deculverting,<br /> }}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Case study documents<br /> |File name=Not Djupsundbekken gjennapning J02.pdf<br /> |Description=Description of the culverted stream, and initial technical proposals for deculverting (in Norwegian)<br /> }}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=File:Not_Djupsundbekken_gjennapning_J02.pdf&diff=47856 2021-02-16T09:03:43Z

<p>Tbgmiseg: </p> <hr /> <div></div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Tokenes_stream_(Tokenesbekken)&diff=47855 2021-02-16T08:13:32Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.174201815636685, 10.376723615258703<br /> }}<br /> {{Project overview<br /> |Status=Planned<br /> |Themes=Habitat and biodiversity, Land use management - agriculture<br /> |Country=Norway<br /> |Main contact forename=Miguel A.<br /> |Main contact surname=Segarra Valls<br /> |Main contact id=Tbgmiseg<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Multi-site=No<br /> |Project picture=Tokenesbekken.png<br /> |Project title=Deculverting Tokenes stream (Tokenesbekken)<br /> }}<br /> {{Image gallery}}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=File:Tokenesbekken.png&diff=47854 2021-02-16T08:13:22Z

<p>Tbgmiseg: Tokenes stream before culverting (around 1970) and in 2017 (norgeibilder.no)</p> <hr /> <div>Tokenes stream before culverting (around 1970) and in 2017 (norgeibilder.no)</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Tokenes_stream_(Tokenesbekken)&diff=47853 2021-02-16T07:57:31Z

<p>Tbgmiseg: Created page with &quot;{{Case study status |Approval status=Draft }} {{Location |Location=59.174201815636685, 10.376723615258703 }} {{Project overview |Project title=Deculverting Tokenes stream (Tok...&quot;</p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.174201815636685, 10.376723615258703<br /> }}<br /> {{Project overview<br /> |Project title=Deculverting Tokenes stream (Tokenesbekken)<br /> |Status=Planned<br /> |Themes=Habitat and biodiversity, Land use management - agriculture<br /> |Country=Norway<br /> |Main contact forename=Miguel A.<br /> |Main contact surname=Segarra Valls<br /> |Main contact id=Tbgmiseg<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Multi-site=No<br /> }}<br /> {{Image gallery}}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Holtan_stream&diff=47852 2021-02-15T16:02:49Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.052667240543244, 10.2251941317918<br /> }}<br /> {{Project overview<br /> |Status=Planned<br /> |Themes=Habitat and biodiversity, Urban<br /> |Country=Norway<br /> |Main contact forename=Miguel A.<br /> |Main contact surname=Segarra Valls<br /> |Multi-site=No<br /> |Project picture=Holtanbekken 13. mai 2020.jpg<br /> |Picture description=Culverted Holtan stream 13th May 2020. Picture: Miguel A. Segarra Valls<br /> |Project title=Deculverting Holtan stream<br /> }}<br /> {{Image gallery}}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site<br /> |Name=Holtanbekken<br /> |WFD water body code=NO015-439-R<br /> |WFD (national) typology=R108<br /> |WFD water body name=Sandefjordsfjorden bekkefelt sør/vest<br /> |Heavily modified water body=No<br /> |Protected species present=Yes<br /> |Invasive species present=No<br /> |Species=Sea trout (Salmo trutta), European eel (Anguilla anguilla),<br /> }}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Case study documents<br /> |File name=Not Holtanbekken Forslag til gjennaning J02.pdf<br /> |Description=Description of the culverted stream, and initial technical proposal for deculverting<br /> }}<br /> {{Case study documents<br /> |File name=El-fiske rapport SFFAL 18.10.2020.pdf<br /> }}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Holtan_stream&diff=47851 2021-02-15T16:02:14Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.052667240543244, 10.2251941317918<br /> }}<br /> {{Project overview<br /> |Status=Planned<br /> |Themes=Habitat and biodiversity, Urban<br /> |Country=Norway<br /> |Main contact forename=Miguel A.<br /> |Main contact surname=Segarra Valls<br /> |Multi-site=No<br /> |Project picture=Holtanbekken 13. mai 2020.jpg<br /> |Picture description=Culverted Holtan stream 13th May 2020<br /> |Project title=Deculverting Holtan stream<br /> }}<br /> {{Image gallery}}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site<br /> |Name=Holtanbekken<br /> |WFD water body code=NO015-439-R<br /> |WFD (national) typology=R108<br /> |WFD water body name=Sandefjordsfjorden bekkefelt sør/vest<br /> |Heavily modified water body=No<br /> |Protected species present=Yes<br /> |Invasive species present=No<br /> |Species=Sea trout (Salmo trutta), European eel (Anguilla anguilla),<br /> }}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Case study documents<br /> |File name=Not Holtanbekken Forslag til gjennaning J02.pdf<br /> |Description=Description of the culverted stream, and initial technical proposal for deculverting<br /> }}<br /> {{Case study documents<br /> |File name=El-fiske rapport SFFAL 18.10.2020.pdf<br /> }}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Holtan_stream&diff=47850 2021-02-15T15:34:48Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.052667240543244, 10.2251941317918<br /> }}<br /> {{Project overview<br /> |Status=Planned<br /> |Themes=Habitat and biodiversity, Urban<br /> |Country=Norway<br /> |Main contact forename=Miguel A.<br /> |Main contact surname=Segarra Valls<br /> |Multi-site=No<br /> |Project picture=Holtanbekken 13. mai 2020.jpg<br /> |Picture description=Culverted Holtan stream 13th May 2020<br /> |Project title=Deculverting Holtan stream<br /> }}<br /> {{Image gallery}}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Case study documents<br /> |File name=Not Holtanbekken Forslag til gjennaning J02.pdf<br /> |Description=Description of the culverted stream, and initial technical proposal for deculverting<br /> }}<br /> {{Case study documents<br /> |File name=El-fiske rapport SFFAL 18.10.2020.pdf<br /> }}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=File:El-fiske_rapport_SFFAL_18.10.2020.pdf&diff=47849 2021-02-15T15:34:43Z

<p>Tbgmiseg: El-fishing report Holtan</p> <hr /> <div>El-fishing report Holtan</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=File:Not_Holtanbekken_Forslag_til_gjennaning_J02.pdf&diff=47848 2021-02-15T15:33:40Z

<p>Tbgmiseg: Proposal reopening of culverted Holtan stream (in Norwegian)</p> <hr /> <div>Proposal reopening of culverted Holtan stream (in Norwegian)</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=File:Holtanbekken_13._mai_2020.jpg&diff=47847 2021-02-15T15:28:07Z

<p>Tbgmiseg: Tbgmiseg uploaded a new version of File:Holtanbekken 13. mai 2020.jpg</p> <hr /> <div></div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=File:Holtanbekken_13._mai_2020.jpg&diff=47846 2021-02-15T15:28:02Z

<p>Tbgmiseg: Tbgmiseg uploaded a new version of File:Holtanbekken 13. mai 2020.jpg</p> <hr /> <div></div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Holtan_stream&diff=47845 2021-02-15T15:27:05Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.052667240543244, 10.2251941317918<br /> }}<br /> {{Project overview<br /> |Status=Planned<br /> |Themes=Habitat and biodiversity, Urban<br /> |Country=Norway<br /> |Main contact forename=Miguel A.<br /> |Main contact surname=Segarra Valls<br /> |Multi-site=No<br /> |Project picture=Holtanbekken 13. mai 2020.jpg<br /> |Picture description=Culverted Holtan stream 13th May 2020<br /> |Project title=Deculverting Holtan stream<br /> }}<br /> {{Image gallery}}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=File:Holtanbekken_13._mai_2020.jpg&diff=47844 2021-02-15T15:25:47Z

<p>Tbgmiseg: </p> <hr /> <div></div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Holtan_stream&diff=47843 2021-02-15T15:22:14Z

<p>Tbgmiseg: Created page with &quot;{{Case study status |Approval status=Draft }} {{Location |Location=59.052667240543244, 10.2251941317918 }} {{Project overview |Project title=Deculverting Holtan stream |Status...&quot;</p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.052667240543244, 10.2251941317918<br /> }}<br /> {{Project overview<br /> |Project title=Deculverting Holtan stream<br /> |Status=Planned<br /> |Themes=Habitat and biodiversity, Urban<br /> |Country=Norway<br /> |Main contact forename=Miguel A.<br /> |Main contact surname=Segarra Valls<br /> |Multi-site=No<br /> }}<br /> {{Image gallery}}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Reopening_of_Mj%C3%B8ll%C3%B8st_stream&diff=47813 2021-02-04T21:19:16Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.159716249856416, 10.260887850104385<br /> }}<br /> {{Project overview<br /> |Status=Planned<br /> |Themes=Habitat and biodiversity, Land use management - agriculture, Monitoring<br /> |Country=Norway<br /> |Main contact forename=Miguel A.<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Partner organisations=Sandefjord kommune, Sandefjord Forvaltningsråd for Anadrom Laksefisk<br /> |Multi-site=No<br /> |Project picture=Mjollostbekken 1959-79 (venstre) 2017 (hoyre).jpg<br /> |Project summary=Mjølløst stream is part of a 17 km long stream system.<br /> Mjølløst stream has since the 1960s had a 270 meter long stream closure that prevents sea trout from accessing a 1.4 km stream stretch. The concrete pipe is getting closer to the end of its lifetime and might collapse in the next years if nothing is done. Landowner, local and regional authorities are positive to remove the culvert and restore the original stream. This project got funding from Norwegian Environment Agency (Miljødirektoratet) in 2020 and we intend to implement it in 2021, if it is technically possible (see &quot;Lessons learnt&quot;).<br /> |Monitoring surveys and results=Results electrofishing October 2020 (before reopening of the stream):<br /> <br /> Station 1 (downstreams closure): 141 trout / 100 m2.<br /> Station 2 (upstreams closure): 1 trout / 100m2.<br /> Station 3 (200 m ustreams closuse): 57 trout / 100m2.<br /> <br /> Fish from upstream stations (2 and 3) is stationary trout introduced by local people from other locations.<br /> |Lessons learn=1. Because of its proximity to the railway (&lt; 30 m) it is required an approval from the railway authorities (Bane-Nor) in order to be able to daylight / deculvert the stream.<br /> 2. There can be quick clay (kvikkleire) in the area of restoration according to NVE (Norwegian Water Resources and Energy Directorate). This makes necessary to explore the ground stability before digging the pipe out of the ground. This will increase considerably the costs of the project.<br /> |Project title=Reopening of Mjølløst stream<br /> }}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Mjollost 1 (downtreams) october 2020.jpg<br /> }}<br /> {{Case study image<br /> |File name=Mjollost 2 (upstreams) october 2020.jpg<br /> }}<br /> {{Case study image<br /> |File name=Mjollost 3 (upstreams) october 2020.jpg<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site<br /> |WFD water body code=NO014-113-R<br /> |WFD (national) typology=REL2321<br /> |WFD water body name=Unnebergsbekken bekkefelt<br /> |Heavily modified water body=No<br /> |Local site designation=Unnebergsbekken, Frombekken, Mjølløstbekken<br /> |Protected species present=No<br /> |Invasive species present=Yes<br /> |Species=Sea trout (Salmo trutta), European eel (Anguilla anguilla),<br /> |Dominant hydrology=Perennial Flashy (PF)<br /> |Mn discharge=0.03<br /> }}<br /> {{Project background<br /> |Reach length directly affected=270<br /> |Project started=2020/03/01<br /> |Total1 cost=100<br /> |Funding sources=The Norwegian Environmental Agency (Miljødirektoratet),<br /> |Invst and design cost=20<br /> |Wrk and supervision cost=70<br /> |Post-project2 management and maintenance cost=5<br /> |Monitoring2 cost=5<br /> |Supplementary funding information=Preliminary estimates.<br /> }}<br /> {{Motivations<br /> |Specific mitigation=Sea trout migration<br /> |Hydromorphological quality elements=Closure of stream<br /> |Biological quality elements=Fish,<br /> |Physico-chemical quality elements=Not relevant<br /> }}<br /> {{Measures<br /> |Bank and bed modifications measure=Reopening of culverted river,<br /> |Social measures=Planting riparian vegetation with school pupils.<br /> }}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{Biological quality element table row<br /> |Element=Fish: Abundance<br /> |Monitored before=Yes<br /> |Monitored after=No<br /> |Qualitative monitoring=No<br /> |Quantitative monitoring=Yes<br /> |Control site used=No<br /> }}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Case study documents<br /> |File name=Project deculverting Mjollost stream.pdf<br /> |Description=Description of the culverted stream, and initial technical proposal for deculverting (in Norwegian)<br /> }}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Reopening_of_Mj%C3%B8ll%C3%B8st_stream&diff=47812 2021-02-04T21:17:23Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.159716249856416, 10.260887850104385<br /> }}<br /> {{Project overview<br /> |Status=Planned<br /> |Themes=Habitat and biodiversity, Land use management - agriculture, Monitoring<br /> |Country=Norway<br /> |Main contact forename=Miguel A.<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Partner organisations=Sandefjord kommune, Sandefjord Forvaltningsråd for Anadrom Laksefisk<br /> |Multi-site=No<br /> |Project picture=Mjollostbekken 1959-79 (venstre) 2017 (hoyre).jpg<br /> |Project summary=Mjølløst stream is part of a 17 km long stream system.<br /> Mjølløst stream has since the 1960s had a 270 meter long stream closure that prevents sea trout from accessing a 1.4 km stream stretch. The concrete pipe is getting closer to the end of its lifetime and might collapse in the next years if nothing is done. Landowner, local and regional authorities are positive to remove the culvert and restore the original stream. This project got funding from Norwegian Environment Agency (Miljødirektoratet) in 2020 and we intend to implement it in 2021, if it is technically possible (see &quot;Lessons learnt&quot;).<br /> |Monitoring surveys and results=Results electrofishing October 2020 (before reopening of the stream):<br /> <br /> Station 1 (downstreams closure): 141 trout / 100 m2.<br /> Station 2 (upstreams closure): 1 trout / 100m2.<br /> Station 3 (200 m ustreams closuse): 57 trout / 100m2.<br /> <br /> Fish from upstream stations is in principle stationary trout.<br /> |Lessons learn=1. Because of its proximity to the railway (&lt; 30 m) it is required an approval from the railway authorities (Bane-Nor) in order to be able to daylight / deculvert the stream.<br /> 2. There can be quick clay (kvikkleire) in the area of restoration according to NVE (Norwegian Water Resources and Energy Directorate). This makes necessary to explore the ground stability before digging the pipe out of the ground. This will increase considerably the costs of the project.<br /> |Project title=Reopening of Mjølløst stream<br /> }}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Mjollost 1 (downtreams) october 2020.jpg<br /> }}<br /> {{Case study image<br /> |File name=Mjollost 2 (upstreams) october 2020.jpg<br /> }}<br /> {{Case study image<br /> |File name=Mjollost 3 (upstreams) october 2020.jpg<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site<br /> |WFD water body code=NO014-113-R<br /> |WFD (national) typology=REL2321<br /> |WFD water body name=Unnebergsbekken bekkefelt<br /> |Heavily modified water body=No<br /> |Local site designation=Unnebergsbekken, Frombekken, Mjølløstbekken<br /> |Protected species present=No<br /> |Invasive species present=Yes<br /> |Species=Sea trout (Salmo trutta), European eel (Anguilla anguilla),<br /> |Dominant hydrology=Perennial Flashy (PF)<br /> |Mn discharge=0.03<br /> }}<br /> {{Project background<br /> |Reach length directly affected=270<br /> |Project started=2020/03/01<br /> |Total1 cost=100<br /> |Funding sources=The Norwegian Environmental Agency (Miljødirektoratet),<br /> |Invst and design cost=20<br /> |Wrk and supervision cost=70<br /> |Post-project2 management and maintenance cost=5<br /> |Monitoring2 cost=5<br /> |Supplementary funding information=Preliminary estimates.<br /> }}<br /> {{Motivations<br /> |Specific mitigation=Sea trout migration<br /> |Hydromorphological quality elements=Closure of stream<br /> |Biological quality elements=Fish,<br /> |Physico-chemical quality elements=Not relevant<br /> }}<br /> {{Measures<br /> |Bank and bed modifications measure=Reopening of culverted river,<br /> |Social measures=Planting riparian vegetation with school pupils.<br /> }}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{Biological quality element table row<br /> |Element=Fish: Abundance<br /> |Monitored before=Yes<br /> |Monitored after=No<br /> |Qualitative monitoring=No<br /> |Quantitative monitoring=Yes<br /> |Control site used=No<br /> }}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Case study documents<br /> |File name=Project deculverting Mjollost stream.pdf<br /> |Description=Description of the culverted stream, and initial technical proposal for deculverting (in Norwegian)<br /> }}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Reopening_of_Mj%C3%B8ll%C3%B8st_stream&diff=47811 2021-02-04T21:16:18Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.159716249856416, 10.260887850104385<br /> }}<br /> {{Project overview<br /> |Status=Planned<br /> |Themes=Habitat and biodiversity, Land use management - agriculture, Monitoring<br /> |Country=Norway<br /> |Main contact forename=Miguel A.<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Partner organisations=Sandefjord kommune, Sandefjord Forvaltningsråd for Anadrom Laksefisk<br /> |Multi-site=No<br /> |Project picture=Mjollostbekken 1959-79 (venstre) 2017 (hoyre).jpg<br /> |Project summary=Mjølløst stream is part of a 17 km long stream system.<br /> Mjølløst stream has since the 1960s had a 270 meter long stream closure that prevents sea trout from accessing a 1.4 km stream stretch. The concrete pipe is getting closer to the end of its lifetime and might collapse in the next years if nothing is done. Landowner, local and regional authorities are positive to remove the culvert and restore the original stream. This project got funding from Norwegian Environment Agency (Miljødirektoratet) in 2020 and we intend to implement it in 2021, if it is technically possible (see &quot;Lessons learnt&quot;).<br /> |Monitoring surveys and results=Results electrofishing October 2020 (before reopening of the stream):<br /> <br /> Station 1 (downstreams closure): 141 trout / 100 m2.<br /> Station 2 (upstreams closure): 1 trout / 100m2.<br /> Station 3 (200 m ustreams closuse): 57 trout / 100m2.<br /> <br /> Fish from upstream stations is in principle stationary trout.<br /> |Lessons learn=1. Because of its proximity to the railway (&lt; 30 m) it is required an approval from the railway authorities (Bane-Nor) in order to be able to daylight / deculvert the stream.<br /> 2. There can be quick clay (kvikkleire) according to NVE (Norwegian Water Resources and Energy Directorate). This makes necessary to explore the ground stability before digging the pipe out of the ground. This will increase considerably the costs of the project.<br /> |Project title=Reopening of Mjølløst stream<br /> }}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Mjollost 1 (downtreams) october 2020.jpg<br /> }}<br /> {{Case study image<br /> |File name=Mjollost 2 (upstreams) october 2020.jpg<br /> }}<br /> {{Case study image<br /> |File name=Mjollost 3 (upstreams) october 2020.jpg<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site<br /> |WFD water body code=NO014-113-R<br /> |WFD (national) typology=REL2321<br /> |WFD water body name=Unnebergsbekken bekkefelt<br /> |Heavily modified water body=No<br /> |Local site designation=Unnebergsbekken, Frombekken, Mjølløstbekken<br /> |Protected species present=No<br /> |Invasive species present=Yes<br /> |Species=Sea trout (Salmo trutta), European eel (Anguilla anguilla),<br /> |Dominant hydrology=Perennial Flashy (PF)<br /> |Mn discharge=0.03<br /> }}<br /> {{Project background<br /> |Reach length directly affected=270<br /> |Project started=2020/03/01<br /> |Total1 cost=100<br /> |Funding sources=The Norwegian Environmental Agency (Miljødirektoratet),<br /> |Invst and design cost=20<br /> |Wrk and supervision cost=70<br /> |Post-project2 management and maintenance cost=5<br /> |Monitoring2 cost=5<br /> |Supplementary funding information=Preliminary estimates.<br /> }}<br /> {{Motivations<br /> |Specific mitigation=Sea trout migration<br /> |Hydromorphological quality elements=Closure of stream<br /> |Biological quality elements=Fish,<br /> |Physico-chemical quality elements=Not relevant<br /> }}<br /> {{Measures<br /> |Bank and bed modifications measure=Reopening of culverted river,<br /> |Social measures=Planting riparian vegetation with school pupils.<br /> }}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{Biological quality element table row<br /> |Element=Fish: Abundance<br /> |Monitored before=Yes<br /> |Monitored after=No<br /> |Qualitative monitoring=No<br /> |Quantitative monitoring=Yes<br /> |Control site used=No<br /> }}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Case study documents<br /> |File name=Project deculverting Mjollost stream.pdf<br /> |Description=Description of the culverted stream, and initial technical proposal for deculverting (in Norwegian)<br /> }}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Djupsund_stream&diff=47810 2021-02-04T21:11:46Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.120474576059955, 10.261882763422117<br /> }}<br /> {{Project overview<br /> |Status=In progress<br /> |Themes=Habitat and biodiversity, Social benefits, Spatial planning<br /> |Country=Norway<br /> |Main contact forename=Miguel Angel<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=https://www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Partner organisations=Sandefjord Forvaltningsråd for Anadrom Laksefisk<br /> |Multi-site=No<br /> |Project picture=Djupsund stream before and after daylighting.png<br /> |Project summary=The Djupsund stream is a very small but very important stram for sea trout in the fjord Mefjorden (Sandefjord municipality), and it has been described as &quot;a small sea trout machine&quot;. The upper part of the stream was culverted with pipes that were too small, and this caused problems for crossing way when strong rainfall episodes occurred. Around 80 m of the stream were daylighted, and a new 1 m diameter pipe was installed under the way in December 2020. Gravel was used to cover parts of daylighted stream and the bottom of the pipe under the crossing way.<br /> <br /> We intend to restore the riparian vegetation along the daylighted stream during spring 2021, in cooperation with pupils from a nearby school.<br /> |Monitoring surveys and results=The recolonization of the new stream stretch by sea trout will be monitored from 2021.<br /> |Lessons learn=New research shows that the ideal amount of spawning gravel in a stream is 20 % of the habitat (https://lakseelver.no/nb/news-2019/utlegg-av-gytegrus). We covered much more of the reopened stream, and will consider to take measures in order to increase the habitat variation.<br /> |Project title=Deculverting Djupsund stream<br /> }}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 2.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 1.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=New pipe under way that crosses Djupsund stream.jpg<br /> |Caption=New pipe under way that crosses Djupsund stream. Picture by Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Sea tout at the opening of the old culvert in Djupsund stream.jpg<br /> |Caption=Sea tout at the opening of the old culvert in Djupsund stream (before restauration).Picture by Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Description restauration project in Djupsund Stream.png<br /> |Caption=Description restauration project in Djupsund Stream. Record: Norconsult<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site<br /> |Name=Djupsundbekken<br /> |WFD water body code=EU-ID:NO015-1467-R<br /> |WFD (national) typology=R110<br /> |WFD water body name=Djupsundbekken<br /> |Heavily modified water body=No<br /> |Protected species present=No<br /> |Invasive species present=No<br /> }}<br /> {{Project background<br /> |Project started=2020/01/15<br /> |Works started=2021/02/15<br /> |Funding sources=Miljødirektoratet<br /> |Invst and design cost=1.2<br /> |Wrk and supervision cost=9<br /> |Post-project2 management and maintenance cost=3<br /> |Monitoring2 cost=5<br /> }}<br /> {{Motivations<br /> |Hydromorphological quality elements=Continuity for organisms,<br /> |Biological quality elements=Fish,<br /> }}<br /> {{Measures<br /> |Bank and bed modifications measure=Re-introducing spawning gravel,<br /> |Floodplain / River corridor=Bigger diameter pipe under way<br /> |Other technical measure=Deculverting,<br /> }}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Djupsund_stream&diff=47809 2021-02-04T21:08:21Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.120474576059955, 10.261882763422117<br /> }}<br /> {{Project overview<br /> |Status=In progress<br /> |Themes=Habitat and biodiversity, Social benefits, Spatial planning<br /> |Country=Norway<br /> |Main contact forename=Miguel Angel<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=https://www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Partner organisations=Sandefjord Forvaltningsråd for Anadrom Laksefisk<br /> |Multi-site=No<br /> |Project picture=Djupsund stream before and after daylighting.png<br /> |Project summary=The Djupsund stream is a very small but very important stram for sea trout in the fjord Mefjorden (Sandefjord municipality), and it has been described as &quot;a small sea trout machine&quot;. The upper part of the stream was culverted with pipes that were too small, and this caused problems for crossing way when strong rainfall episodes occurred. Around 80 m of the stream were daylighted, and a new 1 m diameter pipe was installed under the way in December 2020. Gravel was used to cover parts of daylighted stream and the bottom of the pipe under the crossing way.<br /> <br /> We intend to restore the riparian vegetation along the daylighted stream during spring 2021, in cooperation with pupils from a nearby school.<br /> |Monitoring surveys and results=The recolonization of the new stream stretch by sea trout will be monitored from 2021.<br /> |Lessons learn=New research shows that the ideal amount of spawning gravel in a stream is 20 % of the habitat (https://lakseelver.no/nb/news-2019/utlegg-av-gytegrus). We covered much more of the reopened stream, and will consider to take measures in order to increase the habitat variation.<br /> |Project title=Deculverting Djupsund stream<br /> }}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 2.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 1.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=New pipe under way that crosses Djupsund stream.jpg<br /> |Caption=New pipe under way that crosses Djupsund stream. Picture by Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Sea tout at the opening of the old culvert in Djupsund stream.jpg<br /> |Caption=Sea tout at the opening of the old culvert in Djupsund stream (before restauration).Picture by Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Description restauration project in Djupsund Stream.png<br /> |Caption=Description restauration project in Djupsund Stream. Record: Norconsult<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background<br /> |Project started=2020/01/15<br /> |Works started=2021/02/15<br /> |Funding sources=Miljødirektoratet<br /> |Invst and design cost=1.2<br /> |Wrk and supervision cost=9<br /> |Post-project2 management and maintenance cost=3<br /> |Monitoring2 cost=5<br /> }}<br /> {{Motivations<br /> |Hydromorphological quality elements=Continuity for organisms,<br /> |Biological quality elements=Fish,<br /> }}<br /> {{Measures<br /> |Bank and bed modifications measure=Re-introducing spawning gravel,<br /> |Floodplain / River corridor=Bigger diameter pipe under way<br /> |Other technical measure=Deculverting,<br /> }}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Djupsund_stream&diff=47808 2021-02-04T21:04:18Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.120474576059955, 10.261882763422117<br /> }}<br /> {{Project overview<br /> |Status=In progress<br /> |Themes=Habitat and biodiversity, Social benefits, Spatial planning<br /> |Country=Norway<br /> |Main contact forename=Miguel Angel<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=https://www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Partner organisations=Sandefjord Forvaltningsråd for Anadrom Laksefisk<br /> |Multi-site=No<br /> |Project picture=Djupsund stream before and after daylighting.png<br /> |Project summary=The Djupsund stream is a very small but very important stram for sea trout in the fjord Mefjorden (Sandefjord municipality), and it has been described as &quot;a small sea trout machine&quot;. The upper part of the stream was culverted with pipes that were too small, and this caused problems for crossing way when strong rainfall episodes occurred. Around 80 m of the stream were daylighted, and a new 1 m diameter pipe was installed under the way in December 2020. Gravel was used to cover parts of daylighted stream and the bottom of the pipe under the crossing way.<br /> <br /> We intend to restore the riparian vegetation along the daylighted stream during spring 2021, in cooperation with pupils from a nearby school.<br /> |Monitoring surveys and results=The recolonization of the new stream stretch by sea trout will be monitored from 2021.<br /> |Lessons learn=New research shows that the ideal amount of spawning gravel in a stream is 20 % of the habitat (https://lakseelver.no/nb/news-2019/utlegg-av-gytegrus). We covered much more of the reopened stream, and will consider to take measures in order to increase the habitat variation.<br /> |Project title=Deculverting Djupsund stream<br /> }}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 2.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 1.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=New pipe under way that crosses Djupsund stream.jpg<br /> |Caption=New pipe under way that crosses Djupsund stream. Picture by Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Sea tout at the opening of the old culvert in Djupsund stream.jpg<br /> |Caption=Sea tout at the opening of the old culvert in Djupsund stream (before restauration).Picture by Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Description restauration project in Djupsund Stream.png<br /> |Caption=Description restauration project in Djupsund Stream. Record: Norconsult<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background<br /> |Project started=2020/01/15<br /> |Works started=2021/02/15<br /> |Funding sources=Miljødirektoratet<br /> |Invst and design cost=1.2<br /> |Wrk and supervision cost=9<br /> |Post-project2 management and maintenance cost=3<br /> |Monitoring2 cost=5<br /> }}<br /> {{Motivations<br /> |Hydromorphological quality elements=Continuity for organisms,<br /> |Biological quality elements=Fish,<br /> }}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Djupsund_stream&diff=47807 2021-02-04T21:02:31Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.120474576059955, 10.261882763422117<br /> }}<br /> {{Project overview<br /> |Status=In progress<br /> |Themes=Habitat and biodiversity, Social benefits, Spatial planning<br /> |Country=Norway<br /> |Main contact forename=Miguel Angel<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=https://www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Partner organisations=Sandefjord Forvaltningsråd for Anadrom Laksefisk<br /> |Multi-site=No<br /> |Project picture=Djupsund stream before and after daylighting.png<br /> |Project summary=The Djupsund stream is a very small but very important stram for sea trout in the fjord Mefjorden (Sandefjord municipality), and it has been described as &quot;a small sea trout machine&quot;. The upper part of the stream was culverted with pipes that were too small, and this caused problems for crossing way when strong rainfall episodes occurred. Around 80 m of the stream were daylighted, and a new 1 m diameter pipe was installed under the way in December 2020. Gravel was used to cover parts of daylighted stream and the bottom of the pipe under the crossing way.<br /> <br /> We intend to restore the riparian vegetation along the daylighted stream during spring 2021, in cooperation with pupils from a nearby school.<br /> |Monitoring surveys and results=The recolonization of the new stream stretch by sea trout will be monitored from 2021.<br /> |Lessons learn=New research shows that the ideal amount of spawning gravel in a stream is 20 % of the habitat (https://lakseelver.no/nb/news-2019/utlegg-av-gytegrus). We covered much more of the reopened stream, and will consider to take measures in order to increase the habitat variation.<br /> |Project title=Deculverting Djupsund stream<br /> }}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 2.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 1.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=New pipe under way that crosses Djupsund stream.jpg<br /> |Caption=New pipe under way that crosses Djupsund stream. Picture by Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Sea tout at the opening of the old culvert in Djupsund stream.jpg<br /> |Caption=Sea tout at the opening of the old culvert in Djupsund stream (before restauration).Picture by Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Description restauration project in Djupsund Stream.png<br /> |Caption=Description restauration project in Djupsund Stream. Record: Norconsult<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background<br /> |Project started=2020/01/15<br /> |Works started=2021/02/15<br /> |Funding sources=Miljødirektoratet<br /> |Invst and design cost=1.2<br /> |Wrk and supervision cost=9<br /> |Post-project2 management and maintenance cost=3<br /> |Monitoring2 cost=5<br /> }}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Djupsund_stream&diff=47806 2021-02-04T20:59:34Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.120474576059955, 10.261882763422117<br /> }}<br /> {{Project overview<br /> |Status=In progress<br /> |Themes=Habitat and biodiversity, Social benefits, Spatial planning<br /> |Country=Norway<br /> |Main contact forename=Miguel Angel<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=https://www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Partner organisations=Sandefjord Forvaltningsråd for Anadrom Laksefisk<br /> |Multi-site=No<br /> |Project picture=Djupsund stream before and after daylighting.png<br /> |Project summary=The Djupsund stream is a very small but very important stram for sea trout in the fjord Mefjorden (Sandefjord municipality), and it has been described as &quot;a small sea trout machine&quot;. The upper part of the stream was culverted with pipes that were too small, and this caused problems for crossing way when strong rainfall episodes occurred. Around 80 m of the stream were daylighted, and a new 1 m diameter pipe was installed under the way in December 2020. Gravel was used to cover parts of daylighted stream and the bottom of the pipe under the crossing way.<br /> <br /> We intend to restore the riparian vegetation along the daylighted stream during spring 2021, in cooperation with pupils from a nearby school.<br /> |Monitoring surveys and results=The recolonization of the new stream stretch by sea trout will be monitored from 2021.<br /> |Lessons learn=New research shows that the ideal amount of spawning gravel in a stream is 20 % of the habitat (https://lakseelver.no/nb/news-2019/utlegg-av-gytegrus). We covered much more of the reopened stream, and will consider to take measures in order to increase the habitat variation.<br /> |Project title=Deculverting Djupsund stream<br /> }}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 2.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 1.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=New pipe under way that crosses Djupsund stream.jpg<br /> |Caption=New pipe under way that crosses Djupsund stream. Picture by Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Sea tout at the opening of the old culvert in Djupsund stream.jpg<br /> |Caption=Sea tout at the opening of the old culvert in Djupsund stream (before restauration).Picture by Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Description restauration project in Djupsund Stream.png<br /> |Caption=Description restauration project in Djupsund Stream. Record: Norconsult<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background<br /> |Invst and design cost=1.2<br /> |Wrk and supervision cost=9<br /> |Post-project2 management and maintenance cost=3<br /> |Monitoring2 cost=5<br /> }}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Djupsund_stream&diff=47805 2021-02-04T20:59:08Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.120474576059955, 10.261882763422117<br /> }}<br /> {{Project overview<br /> |Status=In progress<br /> |Themes=Habitat and biodiversity, Social benefits, Spatial planning<br /> |Country=Norway<br /> |Main contact forename=Miguel Angel<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=https://www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Partner organisations=Sandefjord Forvaltningsråd for Anadrom Laksefisk<br /> |Multi-site=No<br /> |Project picture=Djupsund stream before and after daylighting.png<br /> |Project summary=The Djupsund stream is a very small but very important stram for sea trout in the fjord Mefjorden (Sandefjord municipality), and it has been described as &quot;a small sea trout machine&quot;. The upper part of the stream was culverted with pipes that were too small, and this caused problems for crossing way when strong rainfall episodes occurred. Around 80 m of the stream were daylighted, and a new 1 m diameter pipe was installed under the way in December 2020. Gravel was used to cover parts of daylighted stream and the bottom of the pipe under the crossing way.<br /> <br /> We intend to restore the riparian vegetation along the daylighted stream during spring 2021, in cooperation with pupils from a nearby school.<br /> |Monitoring surveys and results=The recolonization of the new stream stretch by sea trout will be monitored from 2021.<br /> |Lessons learn=New research shows that the ideal amount of spawning gravel in a stream is 20 % of the habitat (https://lakseelver.no/nb/news-2019/utlegg-av-gytegrus). We covered much more of the reopened stream, and will consider to take measures in order to increase the habitat variation.<br /> |Project title=Deculverting Djupsund stream<br /> }}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 2.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 1.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=New pipe under way that crosses Djupsund stream.jpg<br /> |Caption=New pipe under way that crosses Djupsund stream. Picture by Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Sea tout at the opening of the old culvert in Djupsund stream.jpg<br /> |Caption=Sea tout at the opening of the old culvert in Djupsund stream (before restauration).Picture by Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Description restauration project in Djupsund Stream.png<br /> |Caption=Description restauration project in Djupsund Stream. Record: Norconsult<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background<br /> |Invst and design cost=1,2<br /> |Wrk and supervision cost=9<br /> |Post-project2 management and maintenance cost=3<br /> |Monitoring2 cost=5<br /> }}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Djupsund_stream&diff=47804 2021-02-04T20:57:15Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.120474576059955, 10.261882763422117<br /> }}<br /> {{Project overview<br /> |Status=In progress<br /> |Themes=Habitat and biodiversity, Social benefits, Spatial planning<br /> |Country=Norway<br /> |Main contact forename=Miguel Angel<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=https://www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Partner organisations=Sandefjord Forvaltningsråd for Anadrom Laksefisk<br /> |Multi-site=No<br /> |Project picture=Djupsund stream before and after daylighting.png<br /> |Project summary=The Djupsund stream is a very small but very important stram for sea trout in the fjord Mefjorden (Sandefjord municipality), and it has been described as &quot;a small sea trout machine&quot;. The upper part of the stream was culverted with pipes that were too small, and this caused problems for crossing way when strong rainfall episodes occurred. Around 80 m of the stream were daylighted, and a new 1 m diameter pipe was installed under the way in December 2020. Gravel was used to cover parts of daylighted stream and the bottom of the pipe under the crossing way.<br /> <br /> We intend to restore the riparian vegetation along the daylighted stream during spring 2021, in cooperation with pupils from a nearby school.<br /> |Monitoring surveys and results=The recolonization of the new stream stretch by sea trout will be monitored from 2021.<br /> |Lessons learn=New research shows that the ideal amount of spawning gravel in a stream is 20 % of the habitat (https://lakseelver.no/nb/news-2019/utlegg-av-gytegrus). We covered much more of the reopened stream, and will consider to take measures in order to increase the habitat variation.<br /> |Project title=Deculverting Djupsund stream<br /> }}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 2.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 1.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=New pipe under way that crosses Djupsund stream.jpg<br /> |Caption=New pipe under way that crosses Djupsund stream. Picture by Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Sea tout at the opening of the old culvert in Djupsund stream.jpg<br /> |Caption=Sea tout at the opening of the old culvert in Djupsund stream (before restauration).Picture by Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Description restauration project in Djupsund Stream.png<br /> |Caption=Description restauration project in Djupsund Stream. Record: Norconsult<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Djupsund_stream&diff=47803 2021-02-04T20:55:38Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.120474576059955, 10.261882763422117<br /> }}<br /> {{Project overview<br /> |Status=In progress<br /> |Themes=Habitat and biodiversity, Social benefits, Spatial planning<br /> |Country=Norway<br /> |Main contact forename=Miguel Angel<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=https://www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Partner organisations=Sandefjord Forvaltningsråd for Anadrom Laksefisk<br /> |Multi-site=No<br /> |Project picture=Djupsund stream before and after daylighting.png<br /> |Project summary=The Djupsund stream is a very small but very important stram for sea trout in the fjord Mefjorden (Sandefjord municipality), and it has been described as &quot;a small sea trout machine&quot;. The upper part of the stream was culverted with pipes that were too small, and this caused problems for crossing way when strong rainfall episodes occurred. Around 80 m of the stream were daylighted, and a new 1 m diameter pipe was installed under the way in December 2020. Gravel was used to cover parts of daylighted stream and the bottom of the pipe under the crossing way.<br /> <br /> We intend to restore the riparian vegetation along the daylighted stream during spring 2021, in cooperation with pupils from a nearby school.<br /> |Monitoring surveys and results=The recolonization of the new stream stretch by sea trout will be monitored from 2021.<br /> |Lessons learn=New research shows that the ideal amount of spawning gravel in a stream is 20 % of the habitat (https://lakseelver.no/nb/news-2019/utlegg-av-gytegrus). We covered much more of the reopened stream, and will consider to take measures in order to increase the habitat variation.<br /> |Project title=Deculverting Djupsund stream<br /> }}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 2.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 1.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=New pipe under way that crosses Djupsund stream.jpg<br /> }}<br /> {{Case study image<br /> |File name=Sea tout at the opening of the old culvert in Djupsund stream.jpg<br /> }}<br /> {{Case study image<br /> |File name=Description restauration project in Djupsund Stream.png<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Djupsund_stream&diff=47802 2021-02-04T20:50:14Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status}}<br /> {{Location}}<br /> {{Project overview}}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 2.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 1.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Sea tout at the opening of the old culvert in Djupsund stream.jpg<br /> |Caption=Sea tout at the opening of the old culvert in Djupsund stream, before stream restauration. Picture: Miguel ANgel Segarra Valls.<br /> }}<br /> {{Case study image<br /> |File name=Description restauration project in Djupsund Stream.png<br /> |Caption=Sketch of the implemented measures (in Norwegian). Record: Norconsult.<br /> }}<br /> {{Case study image<br /> |File name=New pipe under way that crosses Djupsund stream.jpg<br /> |Caption=New pipe under way that crosses Djupsund stream. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=File:New_pipe_under_way_that_crosses_Djupsund_stream.jpg&diff=47801 2021-02-04T20:47:42Z

<p>Tbgmiseg: Tbgmiseg uploaded a new version of File:New pipe under way that crosses Djupsund stream.jpg</p> <hr /> <div>New and bigger pipe placed under way that crosses Djupsund stream. Picture: Miguel A. Segarra Valls</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Djupsund_stream&diff=47800 2021-02-04T20:46:54Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status}}<br /> {{Location}}<br /> {{Project overview}}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 2.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 1.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Sea tout at the opening of the old culvert in Djupsund stream.jpg<br /> }}<br /> {{Case study image<br /> |File name=Description restauration project in Djupsund Stream.png<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Djupsund_stream&diff=47799 2021-02-04T20:46:37Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.120474576059955, 10.261882763422117<br /> }}<br /> {{Project overview<br /> |Status=In progress<br /> |Themes=Habitat and biodiversity, Social benefits, Spatial planning<br /> |Country=Norway<br /> |Main contact forename=Miguel Angel<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=https://www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Partner organisations=Sandefjord Forvaltningsråd for Anadrom Laksefisk<br /> |Multi-site=No<br /> |Project picture=Djupsund stream before and after daylighting.png<br /> |Project summary=The Djupsund stream is a very small but very important stram for sea trout in the fjord Mefjorden (Sandefjord municipality), and it has been described as &quot;a small sea trout machine&quot;. The upper part of the stream was culverted with pipes that were too small, and this caused problems for crossing way when strong rainfall episodes occurred. Around 80 m of the stream were daylighted, and a new 1 m diameter pipe was installed under the way in December 2020. Gravel was used to cover parts of daylighted stream and the bottom of the pipe under the crossing way.<br /> <br /> We intend to restore the riparian vegetation along the daylighted stream during spring 2021, in cooperation with pupils from a nearby school.<br /> |Monitoring surveys and results=The recolonization of the new stream stretch by sea trout will be monitored from 2021.<br /> |Lessons learn=New research shows that the ideal amount of spawning gravel in a stream is 20 % of the habitat (https://lakseelver.no/nb/news-2019/utlegg-av-gytegrus). We covered much more of the reopened stream, and will consider to take measures in order to increase the habitat variation.<br /> |Project title=Deculverting Djupsund stream<br /> }}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 2.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 1.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Sea tout at the opening of the old culvert in Djupsund stream.jpg<br /> }}<br /> {{Case study image<br /> |File name=Description restauration project in Djupsund Stream.png<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=Case_study:Deculverting_Djupsund_stream&diff=47798 2021-02-04T20:44:19Z

<p>Tbgmiseg: </p> <hr /> <div>{{Case study status<br /> |Approval status=Draft<br /> }}<br /> {{Location<br /> |Location=59.120474576059955, 10.261882763422117<br /> }}<br /> {{Project overview<br /> |Status=In progress<br /> |Themes=Habitat and biodiversity, Social benefits, Spatial planning<br /> |Country=Norway<br /> |Main contact forename=Miguel Angel<br /> |Main contact surname=Segarra Valls<br /> |Contact organisation=Vannområde Horten-Larvik<br /> |Contact organisation url=https://www.vannportalen.no/vannregioner/vestfold-og-telemark/vannomrader/horten---larvik/<br /> |Partner organisations=Sandefjord Forvaltningsråd for Anadrom Laksefisk<br /> |Multi-site=No<br /> |Project picture=Djupsund stream before and after daylighting.png<br /> |Project summary=The Djupsund stream is a very small but very important stram for sea trout in the fjord Mefjorden (Sandefjord municipality), and it has been described as &quot;a small sea trout machine&quot;. The upper part of the stream was culverted with pipes that were too small, and this caused problems for crossing way when strong rainfall episodes occurred. Around 80 m of the stream were daylighted, and a new 1 m diameter pipe was installed under the way in December 2020. Gravel was used to cover parts of daylighted stream and the bottom of the pipe under the crossing way.<br /> <br /> We intend to restore the riparian vegetation along the daylighted stream during spring 2021, in cooperation with pupils from a nearby school.<br /> |Monitoring surveys and results=The recolonization of the new stream stretch by sea trout will be monitored from 2021.<br /> |Lessons learn=New research shows that the ideal amount of spawning gravel in a stream is 20 % of the habitat (https://lakseelver.no/nb/news-2019/utlegg-av-gytegrus). We covered much more of the reopened stream, and will consider to take measures in order to increase the habitat variation.<br /> |Project title=Deculverting Djupsund stream<br /> }}<br /> {{Image gallery}}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 2.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=Djupsund stram after daylighting 1.jpg<br /> |Caption=Djupsund stream after deculvering. Picture: Miguel A. Segarra Valls<br /> }}<br /> {{Case study image<br /> |File name=New pipe under way that crosses Djupsund stream.jpg<br /> }}<br /> {{Case study image<br /> |File name=Sea tout at the opening of the old culvert in Djupsund stream.jpg<br /> }}<br /> {{Case study image<br /> |File name=Description restauration project in Djupsund Stream.png<br /> }}<br /> {{Image gallery end}}<br /> {{Toggle button}}<br /> {{Toggle content start}}<br /> {{Case study subcatchment}}<br /> {{Site}}<br /> {{Project background}}<br /> {{Motivations}}<br /> {{Measures}}<br /> {{Hydromorphological quality elements header}}<br /> {{End table}}<br /> {{Biological quality elements header}}<br /> {{End table}}<br /> {{Physico-chemical quality elements header}}<br /> {{End table}}<br /> {{Other responses header}}<br /> {{End table}}<br /> {{Monitoring documents}}<br /> {{Monitoring documents end}}<br /> {{Additional Documents}}<br /> {{Additional Documents end}}<br /> {{Additional links and references header}}<br /> {{Additional links and references footer}}<br /> {{Supplementary Information}}<br /> {{Toggle content end}}</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=File:Description_restauration_project_in_Djupsund_Stream.png&diff=47797 2021-02-04T20:44:07Z

<p>Tbgmiseg: Description restauration project. Credits: Norconsult.</p> <hr /> <div>Description restauration project. Credits: Norconsult.</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=File:Sea_tout_at_the_opening_of_the_old_culvert_in_Djupsund_stream.jpg&diff=47796 2021-02-04T20:41:49Z

<p>Tbgmiseg: Sea tout at the opening of the old culvert in Djupsund stream. Picture: Miguel A. Segarra Valls.</p> <hr /> <div>Sea tout at the opening of the old culvert in Djupsund stream. Picture: Miguel A. Segarra Valls.</div>

Tbgmiseg https://restorerivers.eu/wiki/index.php?title=File:New_pipe_under_way_that_crosses_Djupsund_stream.jpg&diff=47795 2021-02-04T20:40:42Z

<p>Tbgmiseg: New and bigger pipe placed under way that crosses Djupsund stream. Picture: Miguel A. Segarra Valls</p> <hr /> <div>New and bigger pipe placed under way that crosses Djupsund stream. Picture: Miguel A. Segarra Valls</div>

Tbgmiseg