Case study:Restorations of Ritobäcken brook - Revision history

Alexrrc at 12:36, 1 June 2017

2017-06-01T12:36:53Z

@@ Line 77: / Line 77: @@
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 {{Measures
-|Bank and bed modifications measure=
+|Bank and bed modifications measure=Adding sinuosity,Re-introducing stones, Introduction of gravel,
 }}
 {{Hydromorphological_quality_elements_header}}

SFW Mehul at 10:34, 6 September 2013

2013-09-06T10:34:49Z

@@ Line 19: / Line 19: @@
 In 2010 brook was restored as the aim of maintaining and enhancing the habitat diversity of the brook for migratory fish while decreasing flooding of the fields. Because of the significant bank and bed erosion in the upstream reaches, and reduced conveyance in the downstream reaches, fields were inundated during high flows. The two-stage cross-section was constructed on excavating a floodplain on one side of the channel and leaving the opposite side and bottom intact to prevent digging the stream bed. The flood terrace has so far been large enough to prevent the brook to flood to the arable areas. Spawning brown trout have been monitored downstream in autumn 2010 and 2011, showing that no harm for fish was done by the excavation. There can also be expectet increase in trout habitats in the excavated section of upstreams, with the help of further restoration.
 }}
 {{Case study subcatchment
 |Subcatchment=Ritobäcken brook
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 {{Monitoring_documents}}
 {{Monitoring_documents_end}}
 {{Additional_Documents}}
 {{Additional_Documents_end}}
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 {{Case_study_upload}}

Kasvio at 07:12, 22 February 2013

2013-02-22T07:12:41Z

← Older revision		Revision as of 07:12, 22 February 2013
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	{{~~Case_study_status~~		{{Case study status
	\|Approval status=		\|Approval status=Approved




	~~Draft~~
	}}		}}
	{{Location		{{Location

Kasvio at 07:11, 22 February 2013

2013-02-22T07:11:55Z

← Older revision		Revision as of 07:11, 22 February 2013
Line 22:		Line 22:
	\|Picture description=Rirobacken brook after restauration_summer 2011 (photo: Airi Kulmala)		\|Picture description=Rirobacken brook after restauration_summer 2011 (photo: Airi Kulmala)
	\|Project summary=Ritobäcken brook is a small tributary of River Sipoonjoki which is located near to Helsinki partly in a Sipoonkorpi National Park. Brook serves as a drainage channel for the surrounding agricultural fields which constitute 13% of the 10 km2 catchment area. The brook is also a reproduction area for the vulnerable sea run brown trout (Salmo trutta) of the Baltic Sea. Brook has been restored twice. First time was 2006 when 230 meters of dredged and straightened brook was restored as the aim of improving the habitat for the existing brown trout stock. The object was to support the natural development of the brook by adding sinousity, width and depth variation. Also stones and gravel were added and replaced to create habitats for the brown trout.		\|Project summary=Ritobäcken brook is a small tributary of River Sipoonjoki which is located near to Helsinki partly in a Sipoonkorpi National Park. Brook serves as a drainage channel for the surrounding agricultural fields which constitute 13% of the 10 km2 catchment area. The brook is also a reproduction area for the vulnerable sea run brown trout (Salmo trutta) of the Baltic Sea. Brook has been restored twice. First time was 2006 when 230 meters of dredged and straightened brook was restored as the aim of improving the habitat for the existing brown trout stock. The object was to support the natural development of the brook by adding sinousity, width and depth variation. Also stones and gravel were added and replaced to create habitats for the brown trout.
	In 2010 brook was restored as the aim of maintaining and enhancing the habitat diversity of the brook for migratory fish while decreasing flooding of the fields. Because of the significant bank and bed erosion in the upstream reaches, and reduced conveyance in the downstream reaches, fields were inundated during high flows. The two-stage cross-section was constructed on excavating a floodplain on one side of the channel and leaving the opposite side and bottom intact to prevent digging the stream bed. The flood terrace has so far been large enough to prevent the brook to flood to the arable areas. Spawning brown trout have been monitored downstream in autumn 2010 and 2011, showing that no harm for fish was done by the excavation. ~~The~~ increase of trout ~~habitat to~~ the excavated section ~~upstream can also be expected~~, with help of further restoration.		In 2010 brook was restored as the aim of maintaining and enhancing the habitat diversity of the brook for migratory fish while decreasing flooding of the fields. Because of the significant bank and bed erosion in the upstream reaches, and reduced conveyance in the downstream reaches, fields were inundated during high flows. The two-stage cross-section was constructed on excavating a floodplain on one side of the channel and leaving the opposite side and bottom intact to prevent digging the stream bed. The flood terrace has so far been large enough to prevent the brook to flood to the arable areas. Spawning brown trout have been monitored downstream in autumn 2010 and 2011, showing that no harm for fish was done by the excavation. There can also be expectet increase in trout habitats in the excavated section of upstreams, with the help of further restoration.
	}}		}}
	{{Case study subcatchment		{{Case study subcatchment

Kasvio at 07:08, 22 February 2013

2013-02-22T07:08:16Z

@@ Line 28: / Line 28: @@
 }}
 {{Site
-|Name=
+|Name=Cathment of Ritobäcken Brook
 |Pre-project morphology=Sinuous,Straightened
 |Reference morphology=over-widened
-      Cathment of Ritobäcken Brook
+|Heavily modified water body=No
-|WFD water body code=
+|Site designation=EU - Special Area of Conservation
+|Protected species present=No
-|WFD (national) typology=
+|Invasive species present=No
+|Species=Brown trout (Salmo trutta),
-|WFD water body name=
+|Dominant hydrology=Ephemeral
 |River corridor land use=Intensive agriculture (arable)
-|Pre-project morphology=
+|Average bankfull channel depth category=0.5 - 2 m
-      Sinuous,Straightened
+|Avrg channel gradient=0.002
 }}
 {{Project background

Kasvio at 06:43, 22 February 2013

2013-02-22T06:43:54Z

← Older revision		Revision as of 06:43, 22 February 2013
Line 21:		Line 21:
	\|Project picture=New Picture (3).png		\|Project picture=New Picture (3).png
	\|Picture description=Rirobacken brook after restauration_summer 2011 (photo: Airi Kulmala)		\|Picture description=Rirobacken brook after restauration_summer 2011 (photo: Airi Kulmala)
	\|Project summary=Ritobäcken brook is a small tributary of River Sipoonjoki which is located near to Helsinki partly in a Sipoonkorpi National Park. Brook serves as a drainage channel for the surrounding agricultural fields which constitute 13% of the 10 km2 catchment area. The brook is also a reproduction area for the vulnerable sea run brown trout (Salmo trutta) of the Baltic Sea. Brook has been restored twice. First time was 2006 when 230 meters of dredged and straightened brook was restored as the aim of improving the habitat for the existing brown trout stock. The object was to support the natural development of the brook by adding sinousity ~~and~~ width and depth variation. Also stones and gravel were added and replaced to create habitats for the brown trout.		\|Project summary=Ritobäcken brook is a small tributary of River Sipoonjoki which is located near to Helsinki partly in a Sipoonkorpi National Park. Brook serves as a drainage channel for the surrounding agricultural fields which constitute 13% of the 10 km2 catchment area. The brook is also a reproduction area for the vulnerable sea run brown trout (Salmo trutta) of the Baltic Sea. Brook has been restored twice. First time was 2006 when 230 meters of dredged and straightened brook was restored as the aim of improving the habitat for the existing brown trout stock. The object was to support the natural development of the brook by adding sinousity, width and depth variation. Also stones and gravel were added and replaced to create habitats for the brown trout.
	In 2010 brook was restored as the aim of maintaining and enhancing the habitat diversity of the brook for migratory fish while decreasing flooding of the fields. Because of the significant bank and bed erosion in the upstream reaches and reduced conveyance in the downstream reaches fields were inundated during high flows. The two-stage cross-section was constructed on excavating a floodplain on one side of the channel and leaving the opposite side and bottom intact to prevent ~~the~~ digging of the stream bed. The flood terrace has so far been large enough to prevent ~~flooding~~ to the arable areas. Spawning brown trout have been monitored downstream in autumn 2010 and 2011, showing that no harm for fish was done by the excavation. The increase of trout habitat to the excavated section upstream can also be expected, with help of further restoration.		In 2010 brook was restored as the aim of maintaining and enhancing the habitat diversity of the brook for migratory fish while decreasing flooding of the fields. Because of the significant bank and bed erosion in the upstream reaches, and reduced conveyance in the downstream reaches, fields were inundated during high flows. The two-stage cross-section was constructed on excavating a floodplain on one side of the channel and leaving the opposite side and bottom intact to prevent digging the stream bed. The flood terrace has so far been large enough to prevent the brook to flood to the arable areas. Spawning brown trout have been monitored downstream in autumn 2010 and 2011, showing that no harm for fish was done by the excavation. The increase of trout habitat to the excavated section upstream can also be expected, with help of further restoration.
	}}		}}
	{{Case study subcatchment		{{Case study subcatchment

Laamaneno at 12:31, 18 December 2012

2012-12-18T12:31:57Z

← Older revision		Revision as of 12:31, 18 December 2012
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	{{Monitoring_documents_end}}		{{Monitoring_documents_end}}
	{{Image gallery}}		{{Image gallery}}
			{{Case study image
			\|File name=Durin the works.png
			\|Caption=Building the floodplain by the Ritobäcken Brook in 2010 (photo: Kari Koppelmäki)
			}}
	{{Case study image		{{Case study image
	\|File name=Ritobacken brook.png		\|File name=Ritobacken brook.png
Line 137:		Line 141:
	\|File name=New Picture (2).png		\|File name=New Picture (2).png
	\|Caption=Ritobacken brook_spring 2006 (photo: Auri Sarvilinna)		\|Caption=Ritobacken brook_spring 2006 (photo: Auri Sarvilinna)
	}}
	~~{{Case study image~~
	~~\|File name=Durin the works.png~~
	~~\|Caption=Building the floodplain by the Ritobäcken Brook in 2010 (photo: Kari Koppelmäki)~~
	}}		}}
	{{Image_gallery_end}}		{{Image_gallery_end}}

Laamaneno at 11:45, 18 December 2012

2012-12-18T11:45:48Z

← Older revision		Revision as of 11:45, 18 December 2012
Line 21:		Line 21:
	\|Project picture=New Picture (3).png		\|Project picture=New Picture (3).png
	\|Picture description=Rirobacken brook after restauration_summer 2011 (photo: Airi Kulmala)		\|Picture description=Rirobacken brook after restauration_summer 2011 (photo: Airi Kulmala)
	\|Project summary=Ritobäcken brook is a small tributary of River Sipoonjoki which is located partly in a ~~new national natural park near to Helsinki~~. Brook serves as a drainage channel for the surrounding agricultural fields which constitute 13% of the 10 km2 catchment area. 230 meters of dredged and straightened brook was restored ~~in 2006~~ as the aim of improving the habitat for the existing brown trout stock. The object was to support the natural development of the brook by adding sinousity and width and depth variation. Also stones and gravel were added and replaced to create habitats for the brown trout.		\|Project summary=Ritobäcken brook is a small tributary of River Sipoonjoki which is located near to Helsinki partly in a Sipoonkorpi National Park. Brook serves as a drainage channel for the surrounding agricultural fields which constitute 13% of the 10 km2 catchment area. The brook is also a reproduction area for the vulnerable sea run brown trout (Salmo trutta) of the Baltic Sea. Brook has been restored twice. First time was 2006 when 230 meters of dredged and straightened brook was restored as the aim of improving the habitat for the existing brown trout stock. The object was to support the natural development of the brook by adding sinousity and width and depth variation. Also stones and gravel were added and replaced to create habitats for the brown trout.
			In 2010 brook was restored as the aim of maintaining and enhancing the habitat diversity of the brook for migratory fish while decreasing flooding of the fields. Because of the significant bank and bed erosion in the upstream reaches and reduced conveyance in the downstream reaches fields were inundated during high flows. The two-stage cross-section was constructed on excavating a floodplain on one side of the channel and leaving the opposite side and bottom intact to prevent the digging of the stream bed. The flood terrace has so far been large enough to prevent flooding to the arable areas. Spawning brown trout have been monitored downstream in autumn 2010 and 2011, showing that no harm for fish was done by the excavation. The increase of trout habitat to the excavated section upstream can also be expected, with help of further restoration.
	}}		}}
	{{Case study subcatchment		{{Case study subcatchment

Laamaneno: moved Case study:Restoration of Ritobäcken brook-PURO to Case study:Restorations of Ritobäcken brook

2012-12-18T11:07:57Z

moved Case study:Restoration of Ritobäcken brook-PURO to Case study:Restorations of Ritobäcken brook

← Older revision	Revision as of 11:07, 18 December 2012
(No difference)

Laamaneno at 11:01, 4 December 2012

2012-12-04T11:01:48Z

@@ Line 76: / Line 76: @@
 .002
 }}
-{{Project_background
+{{Project background
-|Reach length directly affected=
+|Project started=2009/01/01
 |Works started=2010/01/01
 |Works completed=2010/01/01
 |Funding sources=Ministry of Agriculture and Forestry; Ministry of Environment; Regional ELY-centre; and EU
 }}
 {{Motivations