Case study:Restoration of Myllypuro brook

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Location: 60° 19' 55.88" N, 24° 30' 7.34" E

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Project overview

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Status	Complete
Project web site
Themes	Habitat and biodiversity, Hydromorphology
Country	Finland
Main contact forename	Auri
Main contact surname	Sarvilinna
Main contact user ID
Contact organisation	Finnish Environment Institute
Contact organisation web site	http://www.ymparisto.fi/default.asp?node=12122&lan=fi
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

Myllypuro brook sinuosity after restauration (photo: Liisa Laitinen)

Project summary

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The Myllypuro brook is located in the Nuuksio Natural Park in Southern Finland. This brook is a pilot case for environmental restoration in Finland. The straightened brook has been restored in 1995-2003. The aim of the project was to restore the channel simulating as far as possible the natural conditions of the channel. The restoration included returning of the historical and devious stream line and also building a flood terrace by the brook. Attention was especially paid to the shape of the channel and the restoration of the flooding. As a pattern for restoration, another reach of the same brook was used. This reach had remained in its natural state. A planning concept based on validated information about the original natural conditions provided a good basis for restoration planning. It was also considered important that the factors limiting the restoration were clearly distinguished.

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Myllypuro brook sinousity after restauration(photo.Liisa Laitinen).jpg

Restauration adding sinousity imitation of natural channel.jpg

Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district River basin Subcatchment River name Myllypuro brook Area category 10 - 100 km² Area (km2) 25 km²2,500 ha <br /> Maximum altitude category Maximum altitude (m) Dominant geology Organic (i.e. Peat) Ecoregion Fenno-Scandian Shield Dominant land cover Woodland Waterbody ID Site Edit site Name Cathment of Brook Myllypuro WFD water body codes WFD (national) typology WFD water body name Pre-project morphology Sinuous Reference morphology Braided, Sinuous, Pool-riffle 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 Dominant substrate Bedrock, Clay River corridor land use Woodland Average bankfull channel width category Average bankfull channel width (m) Average bankfull channel depth category 2 - 5 m Average bankfull channel depth (m) 2.2 m0.0022 km <br />220 cm <br /> Mean discharge category Mean annual discharge (m3/s) Average channel gradient category Average channel gradient 0.17 Average unit stream power (W/m2) Project background Edit project background Reach length directly affected (m) 3600 m3.6 km <br />360,000 cm <br /> Project started 2002/01/01 Works started Works completed 2003/01/01 Project completed Total cost category Total cost (k€) Benefit to cost ratio Funding sources 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 Hydromorphology Quantity & dynamics of flow, Width & depth variation, Flow velocities, Continuity of sediment transport Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Adding sinuosity Floodplain / River corridor Planform / Channel pattern Re-instatement of old course 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 Quantity & dynamics of flow Yes Awaiting results Width & depth variation Yes Awaiting results Channel pattern/planform Yes Awaiting results Continuity of sediment transport Yes Awaiting results 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 Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information