]> 2026-04-19T14:25:34+00:00 Case study:Restorations of Ritobäcken brook 500 en Information about restauration of the Ritobacken brook Physical sediment processes in environmental channels Restoration of Ritobäcken brook Approved 0.5 - 2 m 0.002 Adding sinuosity Re-introducing stones Introduction of gravel SYKE Fenno-Scandian Shield Ministry of Agriculture and Forestry; Ministry of Environment; Regional ELY-centre; and EU Yes No Yes false Durin the works.png Ritobacken brook.png New Picture (1).png New Picture (2).png Building the floodplain by the Ritobäcken Brook in 2010 (photo: Kari Koppelmäki) Ritobacken brook_the excavated flood terrace (photo: J.Jormola) Ritobacken brook_autumn 2005 (photo: Auri Sarvilinna) Ritobacken brook_spring 2006 (photo: Auri Sarvilinna) No 60.317926,25.2045018 Jukka SYKE Jormola Adding sinuosity,Re-introducing stones, Introduction of gravel,,, ,,, 1061 Rirobacken brook after restauration_summer 2011 (photo: Airi Kulmala) New Picture (3).png 2009-01-01Z 2454832.5 Complete 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. There can also be expectet increase in trout habitats in the excavated section of upstreams, with the help of further restoration. Restorations of Ritobäcken brook restorations of ritobäcken brook No Sipoonjoki River Southern Finland Ritobäcken brook ritobäcken brook EU - Special Area of Conservation Cathment of Ritobäcken Brook cathment of ritobäcken brook Brown trout (Salmo trutta) 12 10 - 100 km² Ritobäcken brook Habitat and biodiversity 2010-01-01Z 2455197.5 2010-01-01Z 2455197.5 2012-08-10T14:00:03Z 2456150.0833681 2017-06-01T12:36:53Z 2457906.0256134 Restorations of Ritobäcken brook 500 1 plainlist 5 [[Category:Case study]] [[Project title::!Restorations of Ritobäcken brook]] [[Subcatchment title::Ritobäcken brook]] Restorations of Ritobäcken brook# QUERY3233b602a6cac6ae7d2ee02bf4cf1ef2 Case study:Restoration of Ritobäcken brook-PURO 500 en Restoration of Ritobäcken brook-PURO REDI 102 en REDI