Case study:Restorations of Ritobäcken brook

This case study is pending approval by a RiverWiki administrator.

Approve case study

 

0.00

(0 votes)

To discuss or comment on this case study, please use the discussion page.

Location: 60° 19' 4.53" N, 25° 12' 16.21" E

Edit location

Loading map...

{"format":"googlemaps3","type":"HYBRID","minzoom":false,"maxzoom":false,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"limit":50,"offset":0,"link":"all","sort":[""],"order":[],"headers":"show","mainlabel":"","intro":"","outro":"","searchlabel":"... further results","default":"","import-annotation":false,"width":"auto","height":"400px","centre":false,"title":"","label":"","icon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"visitedicon":"","wmsoverlay":false,"zoom":14,"layers":[],"controls":["pan","zoom","type","scale","streetview","rotate"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"resizable":false,"kmlrezoom":false,"poi":true,"cluster":false,"clustergridsize":60,"clustermaxzoom":20,"clusterzoomonclick":true,"clusteraveragecenter":true,"clusterminsize":2,"imageoverlays":[],"kml":[],"gkml":[""],"searchmarkers":"","fullscreen":false,"scrollwheelzoom":false,"showtitle":false,"hidenamespace":true,"template":"Location map popup","userparam":"","activeicon":"","pagelabel":false,"ajaxcoordproperty":"","ajaxquery":"","locations":[{"text":"\u003Cp\u003E\u003Cbr /\u003E\n\u003C/p\u003E\u003Cp\u003E\u003Cb\u003EProject Title:\u003C/b\u003E Restorations of Ritob\u00e4cken brook\n\u003C/p\u003E\u003Cp\u003E\u003Cb\u003ECountry:\u003C/b\u003E \u003Ca href=\"/wiki/index.php?title=Finland\" title=\"Finland\"\u003EFinland\u003C/a\u003E\n\u003C/p\u003E\u003Cp\u003E\u003Cb\u003EProject Status:\u003C/b\u003E Complete\n\u003C/p\u003E\u003Cp\u003E\u003Cb\u003EThemes:\u003C/b\u003E Habitat and biodiversity\n\u003C/p\u003E\u003Cp\u003E\u003Cbr /\u003E\n\u003C/p\u003E","title":"Restorations of Ritob\u00e4cken brook","link":"","lat":60.317926,"lon":25.2045018,"icon":"/wiki/images/a/af/Red_marker.png"}]}

Left click to look around in the map, and use the wheel of your mouse to zoom in and out.

Project overview

Edit project overview

Status	Complete
Project web site
Themes	Habitat and biodiversity
Country	Finland
Main contact forename	Jukka
Main contact surname	Jormola
Main contact user ID
Contact organisation	SYKE
Contact organisation web site	http://www.environment.fi
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

Rirobacken brook after restauration_summer 2011 (photo: Airi Kulmala)

Project summary

Edit project overview to modify the 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.

Monitoring surveys and results

This case study hasn’t got any Monitoring survey and results, you can add some by editing the project overview.

Lessons learnt

This case study hasn’t got any lessons learnt, you can add some by editing the project overview.

Catchment and subcatchment

Select a catchment/subcatchment

Edit the catchment and subcatchment details
(affects all case studies in this subcatchment)

Catchment

River basin district	Southern Finland
River basin	Sipoonjoki River

Subcatchment

River name	Ritobäcken brook
Area category	10 - 100 km²
Area (km2)	12 km²1,200 ha <br />
Maximum altitude category
Maximum altitude (m)
Dominant geology	Organic (i.e. Peat)
Ecoregion	Fenno-Scandian Shield
Dominant land cover	Intensive agriculture
Waterbody ID

Other case studies in this subcatchment: Ritobäcken-environmentally preferable two-stage drainage channels

Site

Edit site

Name	Cathment of Ritobäcken Brook
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology	Sinuous, Straightened
Reference morphology	over-widened
Desired post project morphology
Heavily modified water body
National/international site designation	EU - Special Area of Conservation
Local/regional site designations
Protected species present
Invasive species present
Species of interest
Dominant hydrology	Ephemeral
Dominant substrate
River corridor land use	Intensive agriculture (arable)
Average bankfull channel width category
Average bankfull channel width (m)
Average bankfull channel depth category	0.5 - 2 m
Average bankfull channel depth (m)
Mean discharge category
Mean annual discharge (m3/s)
Average channel gradient category
Average channel gradient	0.002
Average unit stream power (W/m2)

Project background

Edit project background

Reach length directly affected (m)
Project started	2009/01/01
Works started	2010/01/01
Works completed	2010/01/01
Project completed
Total cost category
Total cost (k€)
Benefit to cost ratio
Funding sources	Ministry of Agriculture and Forestry; Ministry of Environment; Regional ELY-centre; and EU

Cost for project phases

Phase	cost category	cost exact (k€)	Lead organisation	Contact forename	Contact surname
Investigation and design
Stakeholder engagement and communication
Works and works supervision
Post-project management and maintenance
Monitoring

Reasons for river restoration

Edit reasons for restoration

Mitigation of a pressure	invasive species
Hydromorphology	Continuity for organisms, Width & depth variation, Structure & condition of riparian/ lake shore zones
Biology	Fish: Species composition, Fish: Abundance, Fish: Disturbance-sensitive species, Fish: Age structure
Physico-chemical
Other reasons for the project

Measures

Edit Measures

Structural measures
Bank/bed modifications	Adding sinuosity, Introducing gravel, Re-introducing stones
Floodplain / River corridor
Planform / Channel pattern
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other

Monitoring

Hydromorphological quality elements

Edit Hydromorphological
quality elements

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative

Biological quality elements

Edit biological
quality elements

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative

Physico-chemical quality elements

Edit Physico-chemical
quality elements

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative

Any other monitoring, e.g. social, economic

Edit Other responses

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative

Monitoring documents

Upload monitoring documents

Image gallery

Edit Image gallery

Ritobacken brook_the excavated flood terrace (photo: J.Jormola)

Ritobacken brook_autumn 2005 (photo: Auri Sarvilinna)

Ritobacken brook_spring 2006 (photo: Auri Sarvilinna)

Building the floodplain by the Ritobäcken Brook in 2010 (photo: Kari Koppelmäki)

Additional documents and videos

Upload additional documents

Additional links and references

Edit links and references

Link	Description
http://www.balticdeal.eu/Paljok Farm/Baltic Deal.mht	Information about restauration of the Ritobacken brook
http://civil.aalto.fi/en/research/water/research/environmental hydraulics/sediment processes/	Physical sediment processes in environmental channels
http://www.restorerivers.eu/Portals/27/Ritob%C3%A4cken%20brook,%20Finland.pdf	Restoration of Ritobäcken brook

Supplementary Information

Edit Supplementary Information