General
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.
NUTS Code
Северен централен (Severen tsentralen)
RBD code
BG1000
Transboundary
0
Data provider
REC
Source(s)
NWRM(s) implemented in the case study
Longitude
27.07305
Latitude
44.10972
Site information
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
Light or indepth?
Light
Average slope range
0.02
Vegetation class
Marsh plants
Monitoring maintenance
Monitoring impacts effects
1
Performance
Performance impact estimation method
Catchment outlet
Performance impact estimation information
Measurment of the water level; Monitoring of the bird species
Design & implementations
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 |
|---|
Lessons, risks, implications...
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 |
|---|
Driver
| Driver type | Driver role | Comments |
|---|
Financing share
| Financing share type | Share | Comments |
|---|
Policy, general governance and design targets
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 |
|---|
Socio-economic
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
Biophysical impacts
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
