Data Summary: Kasumigaura (Lake Kasumigaura)
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| Site Name |
ASI-35 |
Photo : A. Kurata |
| Lake Name |
Kasumigaura (Lake Kasumigaura) |
| State |
Ibaraki Prefecture |
| Country |
Japan |
| Latitude |
36:1N |
| Longitude |
140:2E |
| Altitude [m] |
0.16 |
| Surface area [m2] |
220,000,000 |
Volume [m3] |
848,000,000 |
| Maximum depth [m] |
7 |
Mean depth [m] |
4 |
| Water level control |
Regulated |
Normal range of annual water level fluctuation [m] |
0.25 |
| Length of shoreline [m] |
252,000 |
Residence time [yr] |
0.55 |
| Catchment area [m2] |
1,915,000,000 |
Hours of bright Sunshine [hr yr-1] |
2,308 |
| Solar radiation [MJ m-2 day-1] |
13 |
Freezing period |
None |
| Mixing type |
Monomictic |
Annual fish catch [t yr-1] |
8,745 |
| Total N loading [t yr-1] |
4,248.7 |
Total P loading [t yr-1] |
456.4 |
| Population |
848,000 |
Population density of catchment area [person km-2] |
443 |
WATER USAGE
| Domestic water usage [m3 sec-1] |
1.86 |
Irigation water usage [m3 sec-1] |
47.96 |
| Industrial water usage [m3 sec-1] |
6.08 |
Power generation usage [m3 sec-1] |
- |
LAND USE
| Natural landscape [%] |
45 |
Agricultural land [%] |
43.5 |
Others [%] |
11.5 |
| Siltation |
None |
Toxic Contamination |
None |
| Eutrophication |
Serious |
Acidification |
None |
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