Case study:The Bulgarian Wetlands Restoration and Pollution Reduction Project

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Location: 44° 1' 27.49" N, 26° 29' 50.43" E

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Project overview

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Status	Complete
Project web site
Themes	Hydromorphology
Country	Bulgaria
Main contact forename	Mihail
Main contact surname	Mihailov
Main contact user ID
Contact organisation	Ministry of Environment and Water, Bulgaria
Contact organisation web site	http://www.moew.government.bg/
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

Channel post restoration works

Project summary

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In 2007 the wetlands of the Persin Island were re-linked to the Danube River under the Project for Wetlands Restoration and Pollution Reduction as part of the initiative “Lower Danube Green Corridor”. The project was carried out by the Ministry of the Environment and Water in Bulgaria and the main donor was the Global Environment Facility (GEF). The restored wetland is a man controlled floodplain of about 2200 ha. The depth of flooding varies up to 2.5 m. At this water level, four relatively large marshes shape up in the eastern part of the island – Murtvo Blato, Peschina, Staroto Blato and Dyulova Bara, as well as several smaller ones. The most important and innovative activity of the project is the physical restoration of the wetlands in the two protected areas. In the course of the implementation of this component activities the project has restored 4 035 ha of former wetlands on two specific sites – Belene Island (2 280 ha) within the Persina Nature Park and Kalimok/Brushlen (1 755 ha) within the Kalimok/Brushlen Protected Site – in order to demonstrate the use of riparian wetlands as nutrient traps.

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After restoration - channel

Restoration works_1

Restoration works_2

Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district Danube River basin Danube Subcatchment River name Sava River Area category more than 10000 km² Area (km2) Maximum altitude category 500 - 1000 m Maximum altitude (m) 833833 m <br />0.833 km <br />83,300 cm <br /> Dominant geology Calcareous Ecoregion Dinaric Western Balkan, Alps Dominant land cover Waterbody ID Other case studies in this subcatchment: Conservation of alluvial, Hainburg River Restoration, INTERREG MED WETNET - Memoradum on Participation in Wetland Conservation in Ljubljansko Barje Nature Park, Marsh protection in Egyek–Pusztakócs, National Park Danube-Auen, Regelsbrunner Aue, Renaturation of Stržen's riverbed on intermittent Cerknica Lake, Witzelsdorf Pilot Project Site Edit site Name Persina Nature park, protected site "Kalimok- Brashlen" WFD water body codes BG1DU000R001, BG1DJ149R002 WFD (national) typology BGTR6 WFD water body name Pre-project morphology Embanked Reference morphology Desired post project morphology Heavily modified water body true 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 Sand River corridor land use Plantation forestry Average bankfull channel width category more than 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) 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 2002/10/01 Works started Works completed 2008/12/01 Project completed Total cost category more than 10000 k€ Total cost (k€) Benefit to cost ratio Funding sources Global Environment Facility (GEF) 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 Floodplain / River corridor Creation of wetland 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 Additional documents and videos Upload additional documents Wetlands Broshure Additional links and references Edit links and references Link Description http://iwlearn.net/iw-projects/1123 Global Environment Facility's (GEF) International Waters Learning Exchange and Resource Network http://www.persina.bg Natural park Persina http://kalimok.eu/ Protected area Kalimok http://www.wwf.bg/ WWF-Bulgaria http://www.greenbalkans.org/ Green Balkans Supplementary Information Edit Supplementary Information