Case study:Stabilization of hydrological situation on the Neznaika River

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Location: 55° 33' 48.13" N, 37° 16' 33.30" E

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Project overview

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Status	Complete
Project web site
Themes	Environmental flows and water resources, Flood risk management, Hydromorphology
Country	Russia
Main contact forename	Andrey
Main contact surname	Pyatov
Main contact user ID
Contact organisation	CentrRegionVodHoz
Contact organisation web site	http://http://www.fgwu.ru/
Partner organisations
This is a parent project encompassing the following projects

Neznaika river bed re-designing

Project summary

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The Neznaika river originates northeast village Aprelevka of Moscow Oblast and flows into the Desna river at the left bank on a distance of 30 km from the mouth. The river is 32 km long. Water regime of the river is characterized by high spring floods, and little discharge in winter and summer/autumn low-water period, that is sometimes interrupted by rain floods. Due to the intensive overgrowing shrubs and weeds, littering and silting of the riverbed within the reach of the Serednevo Village there has been a marked tightness of the bed and erosion of the banks in recent years. All these adversely affect the run-off ability of the spring and rain floods and lead to an annual overflow the channel of the river to the surface (depth of flood - 0.8-1.0 m) and flooding private land (gardens), outbuildings (workhouses, cages for kettle) and houses for a relatively long period of time. Currently, there has been a particularly dangerous situation in the area of low water bridge over the Neznaika river due to quick erosion of the right bank of the river.

Works included:

• Re-profiling of the river bed with a bottom width of 1.5 m and slopes 1:2.5 (in some places 1:2) facing the natural surface.
• Removal of sediment along the entire length of area restored by applying the multifunctional machine TRUXOR DM5000.

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bank enforcement

Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name Neznaika River WFD water body codes WFD (national) typology WFD water body name Pre-project morphology Reference morphology Desired post project morphology Heavily modified water body No National/international site designation Local/regional site designations Protected species present No Invasive species present No Species of interest Dominant hydrology Dominant substrate River corridor land use Average bankfull channel width category Average bankfull channel width (m) Average bankfull channel depth category Average bankfull channel depth (m) Mean discharge category Mean annual discharge (m3/s) Average channel gradient category Average channel gradient Average unit stream power (W/m2) Project background Edit project background Reach length directly affected (m) Project started Works started Works completed 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 Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Removal of dying and crushed trees and old shrubs vegetation, additional resistance of which may cause an increase in the level of flooding the surrounding area. Floodplain / River corridor Removal of sediments Planform / Channel pattern Change in bed profile Other Willow mattress revetment. Willow fance and roll bank enforcement. Bank enforcement with poles wall. 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 Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information