Case study:Zandwetering - Revision history

Bas Wullems at 09:50, 20 April 2021

2021-04-20T09:50:58Z

← Older revision		Revision as of 09:50, 20 April 2021
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	\|WFD (national) typology=R5		\|WFD (national) typology=R5
	\|WFD water body name=Zandwetering		\|WFD water body name=Zandwetering
			\|Pre-project morphology=Low gradient passively meandering,
			\|Reference morphology=Straightened,
			\|Desired post project morphology=Straightened,
	\|Heavily modified water body=Yes		\|Heavily modified water body=Yes
	\|Protected species present=No		\|Protected species present=No

Bas Wullems at 09:44, 20 April 2021

2021-04-20T09:44:59Z

← Older revision		Revision as of 09:44, 20 April 2021
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	\|Name of parent multi-site project=Building with nature measures in streams		\|Name of parent multi-site project=Building with nature measures in streams
	\|Multi-site=No		\|Multi-site=No
	\|Project summary=The Zandwetering is a slow flowing waterway in the urban area of Deventer and the countryside to the north. The latter, downstream part of the waterway is characterized by meadows, fields and woodland. ts natural hydrological regime has been altered by withdrawals for agricultural purposes and by water level regulating structures. As a consequence, development of vegetation, macroinvertebrates and fish have been held back. he water authority has made an attempt to create more variation in morphology and flow structure of the Marswetering and Zandwetering by introducing dead wood in the stream. The wood was introduced at six locations below the water line to create narrower stretches in the stream. This measure was carried out along with other measures, such as the creation of fish ~~passes~~. This page focuses on the introduction of dead wood.		\|Project summary=The Zandwetering is a slow flowing waterway in the urban area of Deventer and the countryside to the north. The latter, downstream part of the waterway is characterized by meadows, fields and woodland. Its natural hydrological regime has been altered by withdrawals for agricultural purposes and by water level regulating structures. As a consequence, development of vegetation, macroinvertebrates and fish have been held back. The water authority has made an attempt to create more variation in morphology and flow structure of the Marswetering and Zandwetering by introducing dead wood in the stream. The wood was introduced at six locations below the water line to create narrower stretches in the stream. This measure was carried out along with other measures, such as the creation of fish passages. This page focuses on the introduction of dead wood.
	\|Monitoring surveys and results=The effect of the measures on the abundance of macroinvertebrate and fish has been monitored. The experiments did not yield any favourable results, probably because the selected streams have a rather low discharge and are therefore less suitable for this type of measures.		\|Monitoring surveys and results=The effect of the measures on the abundance of macroinvertebrate and fish has been monitored. The experiments did not yield any favourable results, probably because the selected streams have a rather low discharge and are therefore less suitable for this type of measures.
	\|Lessons learn=Although the method yielded no results in this particular location, it has since been applied in various other projects and is generally well received by society. An important lesson is that a sufficiently high discharge is required for this measure to function. Projects such as this one can be complicated by a shortage of available wood and problems cleaning out debris. It has also been noticed that willow wood is less suitable for this measure, as it degrades quickly and is likely to sprout.		\|Lessons learn=Although the method yielded no results in this particular location, it has since been applied in various other projects and is generally well received by society. An important lesson is that a sufficiently high discharge is required for this measure to function. Projects such as this one can be complicated by a shortage of available wood and problems cleaning out debris. It has also been noticed that willow wood is less suitable for this measure, as it degrades quickly and is likely to sprout.

Bas Wullems at 15:20, 26 January 2021

2021-01-26T15:20:02Z

← Older revision		Revision as of 15:20, 26 January 2021
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	{{Toggle button}}		{{Toggle button}}
	{{Toggle content start}}		{{Toggle content start}}
	{{Case study subcatchment}}		{{Case study subcatchment
			\|Subcatchment=Vecht (Overijssel)
			}}
	{{Site		{{Site
	\|Name=Zandwetering		\|Name=Zandwetering

Bas Wullems at 13:29, 3 December 2020

2020-12-03T13:29:37Z

← Older revision		Revision as of 13:29, 3 December 2020
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	\|WFD (national) typology=R5		\|WFD (national) typology=R5
	\|WFD water body name=Zandwetering		\|WFD water body name=Zandwetering
	\|Heavily modified water body=No		\|Heavily modified water body=Yes
	\|Protected species present=No		\|Protected species present=No
	\|Invasive species present=No		\|Invasive species present=No
			\|Dominant substrate=Sand,
			\|Mean discharge category=0.1 - 1.0 m³/s
			\|Average channel gradient category=Less than 0.001
	}}		}}
	{{Project background}}		{{Project background}}

Bas Wullems at 13:28, 3 December 2020

2020-12-03T13:28:41Z

← Older revision		Revision as of 13:28, 3 December 2020
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	{{Case study subcatchment}}		{{Case study subcatchment}}
	{{Site}}		{{Site
			\|Name=Zandwetering
			\|WFD water body code=NL04_SAL_ZANDWETERING
			\|WFD (national) typology=R5
			\|WFD water body name=Zandwetering
			\|Heavily modified water body=No
			\|Protected species present=No
			\|Invasive species present=No
			}}
	{{Project background}}		{{Project background}}
	{{Motivations}}		{{Motivations}}

Bas Wullems at 13:24, 3 December 2020

2020-12-03T13:24:26Z

← Older revision		Revision as of 13:24, 3 December 2020
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	}}		}}
	{{Project overview		{{Project overview
	~~\|Project title=Zandwetering~~
	\|Status=Complete		\|Status=Complete
	\|Themes=Habitat and biodiversity, Hydromorphology, Monitoring, Water quality		\|Themes=Habitat and biodiversity, Hydromorphology, Monitoring, Water quality
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	\|Main contact surname=Verheijen		\|Main contact surname=Verheijen
	\|Contact organisation url=www.wdodelta.nl		\|Contact organisation url=www.wdodelta.nl
			\|Name of parent multi-site project=Building with nature measures in streams
	\|Multi-site=No		\|Multi-site=No
	\|~~Name~~ of ~~parent multi-site project~~=~~Building with nature~~ measures in ~~streams~~		\|Project summary=The Zandwetering is a slow flowing waterway in the urban area of Deventer and the countryside to the north. The latter, downstream part of the waterway is characterized by meadows, fields and woodland. ts natural hydrological regime has been altered by withdrawals for agricultural purposes and by water level regulating structures. As a consequence, development of vegetation, macroinvertebrates and fish have been held back. he water authority has made an attempt to create more variation in morphology and flow structure of the Marswetering and Zandwetering by introducing dead wood in the stream. The wood was introduced at six locations below the water line to create narrower stretches in the stream. This measure was carried out along with other measures, such as the creation of fish passes. This page focuses on the introduction of dead wood.
			\|Monitoring surveys and results=The effect of the measures on the abundance of macroinvertebrate and fish has been monitored. The experiments did not yield any favourable results, probably because the selected streams have a rather low discharge and are therefore less suitable for this type of measures.
			\|Lessons learn=Although the method yielded no results in this particular location, it has since been applied in various other projects and is generally well received by society. An important lesson is that a sufficiently high discharge is required for this measure to function. Projects such as this one can be complicated by a shortage of available wood and problems cleaning out debris. It has also been noticed that willow wood is less suitable for this measure, as it degrades quickly and is likely to sprout.
			\|Project title=Zandwetering
	}}		}}
	{{Image gallery}}		{{Image gallery}}

Bas Wullems: Created page with "{{Case study status |Approval status=Draft }} {{Location |Location=52.27709073381496, 6.162120980753256 }} {{Project overview |Project title=Zandwetering |Status=Complete |The..."

2020-12-03T13:15:50Z

Created page with "{{Case study status |Approval status=Draft }} {{Location |Location=52.27709073381496, 6.162120980753256 }} {{Project overview |Project title=Zandwetering |Status=Complete |The..."

New page

{{Case study status
|Approval status=Draft
}}
{{Location
|Location=52.27709073381496, 6.162120980753256
}}
{{Project overview
|Project title=Zandwetering
|Status=Complete
|Themes=Habitat and biodiversity, Hydromorphology, Monitoring, Water quality
|Country=Netherlands
|Main contact forename=Sander
|Main contact surname=Verheijen
|Contact organisation url=www.wdodelta.nl
|Multi-site=No
|Name of parent multi-site project=Building with nature measures in streams
}}
{{Image gallery}}
{{Image gallery end}}
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{{Case study subcatchment}}
{{Site}}
{{Project background}}
{{Motivations}}
{{Measures}}
{{Hydromorphological quality elements header}}
{{End table}}
{{Biological quality elements header}}
{{End table}}
{{Physico-chemical quality elements header}}
{{End table}}
{{Other responses header}}
{{End table}}
{{Monitoring documents}}
{{Monitoring documents end}}
{{Additional Documents}}
{{Additional Documents end}}
{{Additional links and references header}}
{{Additional links and references footer}}
{{Supplementary Information}}
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