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", 26° 33' 59"
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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
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"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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Image gallery


Dolna topchia Reserve_1
Dolna topchia Reserve_2
Tundzha river_1
Tundzha river_2
Tundzha river_3
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Catchment and 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

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) 32
32 m³/s
32,000 l/s
Average channel gradient category
Average channel gradient
Average unit stream power (W/m2)


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

Mitigation of a pressure
Hydromorphology Structure & condition of riparian/ lake shore zones
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 Information provision


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

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative
Public awareness of river Improvement


Monitoring documents



Additional documents and videos


Additional links and references

Link Description
http://www.stz.riew.e-gov.bg/ Regional Inspectorate of Environment and Water Stara Zagora

Supplementary Information

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