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

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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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Catchment and subcatchment

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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

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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

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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

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

Measures

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Structural measures
Bank/bed modifications
Floodplain / River corridor	Creation of wetlands
Planform / Channel pattern
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Non-structural measures
Management interventions
Social measures (incl. engagement)
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Monitoring

Hydromorphological quality elements

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quality elements

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

Biological quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
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Physico-chemical quality elements

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quality elements

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Any other monitoring, e.g. social, economic

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Monitoring documents

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Image gallery

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Map with the location

After restoration - channel

Restoration works_1

Restoration works_2

Additional documents and videos

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Wetlands Broshure

Additional links and references

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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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