Data Summary: Varna Lake
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| Site Name |
EUR-35 |
Photo: A. Kurata |
| Lake Name |
Varna Lake |
| State |
Varna |
| Country |
Bulgaria |
| Latitude |
43:1N |
| Longitude |
27:4E |
| Altitude [m] |
0.05 |
| Surface area [m2] |
17,000,000 |
Volume [m3] |
165,000,000 |
| Maximum depth [m] |
19 |
Mean depth [m] |
9.5 |
| Water level control |
Unregulated |
Normal range of annual water level fluctuation [m] |
0.25 |
| Length of shoreline [m] |
32,000 |
Residence time [yr] |
0.8 |
| Catchment area [m2] |
2,680,000,000 |
Hours of bright Sunshine [hr yr-1] |
2,094 |
| Solar radiation [MJ m-2 day-1] |
24.5 |
Freezing period |
- |
| Mixing type |
Dimictic |
Annual fish catch [t yr-1] |
- |
| Total N loading [t yr-1] |
- |
Total P loading [t yr-1] |
- |
| Population |
500,000 |
Population density of catchment area [person km-2] |
- |
WATER USAGE
| Domestic water usage [m3 sec-1] |
- |
Irigation water usage [m3 sec-1] |
- |
| Industrial water usage [m3 sec-1] |
- |
Power generation usage [m3 sec-1] |
- |
LAND USE
| Natural landscape [%] |
- |
Agricultural land [%] |
82 |
Others [%] |
18 |
| Siltation |
Serious |
Toxic Contamination |
Serious |
| Eutrophication |
Serious |
Acidification |
None |
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