National Id
Bulgaria_09
Site name
Srebarna Nature Reserve
Summary
A linking canal with a lock, constructed in 1994, enabled the artificial respiration of Srebarna Lake in the Bulgarian border with Romania. Thanks to this canal, water from the Danube can now flow into the lake every year.
Light or indepth?
Light
NUTS Code
Северен централен (Severen tsentralen)
RBD code
BG1000
Transboundary
0
Data provider
REC
NWRM(s) implemented in the case study
Longitude
27.07305
Latitude
44.10972
Climate zone
warm temperate dry
Mean rainfall
547
Mean rainfall unit
mm/year
Average temperature
12,8000001907349
Average imperviousness
0,200000002980232
Type
Case Study Info
Average slope range
0.02
Vegetation class
Marsh plants
Monitoring impacts effects
1
Performance impact estimation method
Catchment outlet
Performance impact estimation information
Measurment of the water level; Monitoring of the bird species
Application scale
Field Scale
Installation date
1994
Age
10
Performance timescale
5 - 10 years
Area (ha)
60200
Size
638
Size unit
ha
Max water retention capacity
14
Max water retention capacity unit
mio m3/month
Constraints
Interrupted connection with Danube River, Distance fom the main river
Favourable preconditions
Designated to Strict nature reserve
Design contractual arrangement
Arrangement type Responsibility Role Comments Name
Design consultation activity
Activity stage Key issues Name Comments
Design land use change
Land use change type
Design authority
Authority type Role Responsibility Name Comments
Key lessons
Hydrotechnical restoration of Srebarna is successful concerning the local biophysical impacts: improved water level, decline in eutrophication trends, improved biodiversity. However the impacts at river basin level are insignificant or difficult to assess due to the scale difference.
Success factor(s)
Success factor type Success factor role Comments
Financing
Financing type Comments
Barrier
Barrier type Barrier role Comments
Driver
Driver type Driver role Comments
Financing share
Financing share type Share Comments
Policy description
Decrease of the water level, Eutrophication, Sediments accumulation,
Part of wider plan
0
Policy target
Target purpose
Runoff control
Improved Biodiversity
Increase Water Storage
Policy pressure
Pressure directive Relevant pressure
Policy area
Policy area type Policy area focus Name Comments
Policy impact
Impact directive Relevant impact
Policy wider plan
Wider plan type Wider plan focus Name Comments
Policy requirement directive
Requirement directive Specification
Ecosystem improved biodiversity
1
Information on Ecosystem improved biodiversity
Maintaining wetland for endangered bird species
Ecosystem provisioning services
0
Ecosystem impact climate regulation
Increased permanent biomas
Retained water
14
Retained water unit
mio m3/year
Increased water storage
4
Increased water storage unit
mio m3/year
Water quality overall improvements
Positive impact-WQ improvement
Soil quality overall soil improvements
N/A info