Data Summary: Lake Hjalmaren
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| Site Name |
EUR-14 |
Photo : B. Wiksell |
| Lake Name |
Lake Hjalmaren |
| State |
Orebro, Vastmanlands and Sodermanlands |
| Country |
Sweden |
| Latitude |
59:1N |
| Longitude |
15:4E |
| Altitude [m] |
22 |
| Surface area [m2] |
478,000,000 |
Volume [m3] |
2,900,000,000 |
| Maximum depth [m] |
22 |
Mean depth [m] |
6.1 |
| Water level control |
Regulated |
Normal range of annual water level fluctuation [m] |
- |
| Length of shoreline [m] |
428,000 |
Residence time [yr] |
3.3 |
| Catchment area [m2] |
3,575,000,000 |
Hours of bright Sunshine [hr yr-1] |
1,900 |
| Solar radiation [MJ m-2 day-1] |
8.9 |
Freezing period |
139 days |
| Mixing type |
Homogeneous |
Annual fish catch [t yr-1] |
180 |
| Total N loading [t yr-1] |
2,750 |
Total P loading [t yr-1] |
65 |
| Population |
242,200 |
Population density of catchment area [person km-2] |
67.7 |
WATER USAGE
| Domestic water usage [m3 sec-1] |
0.049 |
Irigation water usage [m3 sec-1] |
- |
| Industrial water usage [m3 sec-1] |
- |
Power generation usage [m3 sec-1] |
- |
LAND USE
| Natural landscape [%] |
51.9 |
Agricultural land [%] |
25.4 |
Others [%] |
22.7 |
| Siltation |
Not serious |
Toxic Contamination |
Not serious |
| Eutrophication |
Serious |
Acidification |
None |
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