Case study:Restore riparian floodplain habitats maintained in reserve "Dolna topchia" and run off on his sleeve "Malka Tundzha"

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Location: 42° 13' 48.29" N, 26° 33' 58.88" E

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Project overview

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Status	Complete
Project web site
Themes	Habitat and biodiversity
Country	Bulgaria
Main contact forename	Penka
Main contact surname	Nacheva
Main contact user ID
Contact organisation	Regional Inspectorate of Environment and Water – Stara Zagora
Contact organisation web site	http://www.stz.riew.e-gov.bg/
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

"Dolna topchia" Reserve

Project summary

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Design and construction of hydraulic structures on river Tundzha for recovery of riparian wetland biotopes maintained in reserve "Dolna topchia" and run off on his sleeve "MalkaTundzha." The main objective of the project is to restore the conditions necessary for the maintenance of riparian biotopes. Main habitat is riparian floodplain forest - habitat code 91F0. There is good population of spring snowflake. The target of the project area is maintained reserve category " Dolna topchia " and is part of the Natura 2000 network –protected area "Reka Tundzha 2." To achieve the objective was built weir on the Tundzha river and channel with length of 900 m. The water intake includes the diversion weir, stilling, primitive channel, fish passage and water intake facility. Through the construction of channel and water intake facility is carried out gravity connection between the river and sleeve " MalkaTundzha" by drainage channel along an existing irrigation canal that expanding, allowing hydration of 467.6 ha of habitat 91F0. The channel is lined and the bed of the "MalkaTundzha” will supply the groundwater in the area of the reserve. After the feedback between " MalkaTundzha " and river along the southern border of the reserve "Dolna topchia" will be implemented consistent circulation of water in reserve.

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Dolna topchia Reserve_1

Dolna topchia Reserve_2

Tundzha river_1

Tundzha river_2

Tundzha river_3

Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district East Aegean River basin Tundzha Subcatchment River name Tundzha river Area category 1000 - 10000 km² Area (km2) Maximum altitude category Less than 100 m Maximum altitude (m) Dominant geology Siliceous Ecoregion Eastern Balkan Dominant land cover Woodland Waterbody ID Other case studies in this subcatchment: Restore riparian floodplain habitats maintained in reserve "Dolna topchia" and run off on his sleeve "Malka Tundzha" Site Edit site Name protected area "Tundzha river - 2" BG 0000195 WFD water body codes BG3TU500R016 WFD (national) typology TR20 WFD water body name Pre-project morphology Sinuous Reference morphology Sinuous 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 Artificially regulated Dominant substrate Silt River corridor land use Woodland Average bankfull channel width category 10 - 50 m Average bankfull channel width (m) Average bankfull channel depth category 2 - 5 m Average bankfull channel depth (m) Mean discharge category Mean annual discharge (m3/s) 3232 m³/s <br />32,000 l/s <br /> 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 100 - 500 k€ Total cost (k€) Benefit to cost ratio Funding sources Enterpise for Management of Environmental Protection Activities Cost for project phases Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname Investigation and design Lyutskan Tanev 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 Structure & condition of riparian/ lake shore zones Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Floodplain / River corridor Creation of wetlands Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) Other Information provision 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 Public awareness of river Improvement Monitoring documents Upload monitoring documents Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description http://www.stz.riew.e-gov.bg/ Regional Inspectorate of Environment and Water Stara Zagora Supplementary Information Edit Supplementary Information