Case study:The Bulgarian Wetlands Restoration and Pollution Reduction Project

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Location: 44° 1' 27", 26° 29' 50"
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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

Case_study:Project Co-ordination Unit Wetlands Restoration and Pollution Reduction

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.

Monitoring surveys and results

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Lessons learnt

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Image gallery


Map with the location
After restoration - channel
Restoration works_1
Restoration works_2
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Catchment and subcatchment

Catchment

River basin district Danube
River basin Danube

Subcatchment

River name Danube
Area category more than 10000 km²
Area (km2)
Maximum altitude category Less than 100 m
Maximum altitude (m)
Dominant geology
Ecoregion
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, Witzelsdorf Pilot Project


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

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

Mitigation of a pressure
Hydromorphology
Biology
Physico-chemical
Other reasons for the project


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

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

Biological quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

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

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Monitoring documents



Additional documents and videos


Additional 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

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