Data Summary: Lake Vortsjarv
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| Site Name |
EUR-47 |
Photo: J. Haberman |
| Lake Name |
Lake Vortsjarv |
| State |
Viljandi, Tartu and Valga Counties |
| Country |
Estonia |
| Latitude |
58:2N |
| Longitude |
25:4E |
| Altitude [m] |
33.7 |
| Surface area [m2] |
270,700,000 |
Volume [m3] |
760,000,000 |
| Maximum depth [m] |
6 |
Mean depth [m] |
2.8 |
| Water level control |
Unregulated |
Normal range of annual water level fluctuation [m] |
1.4 |
| Length of shoreline [m] |
96,000 |
Residence time [yr] |
1 |
| Catchment area [m2] |
3,100,000,000 |
Hours of bright Sunshine [hr yr-1] |
1,625 |
| Solar radiation [MJ m-2 day-1] |
9.23 |
Freezing period |
Nov-Apr |
| Mixing type |
Polymictic |
Annual fish catch [t yr-1] |
471 |
| Total N loading [t yr-1] |
3,710 |
Total P loading [t yr-1] |
72 |
| Population |
81,775 |
Population density of catchment area [person km-2] |
26.4 |
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 [%] |
55 |
Agricultural land [%] |
44 |
Others [%] |
1 |
| Siltation |
Not serious |
Toxic Contamination |
Not serious |
| Eutrophication |
Serious |
Acidification |
None |
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