Data Summary: Toya-ko (Lake Toya)
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| Site Name |
ASI-17 |
Photo : A. Kurata |
| Lake Name |
Toya-ko (Lake Toya) |
| State |
Hokkaido |
| Country |
Japan |
| Latitude |
42:4N |
| Longitude |
140:5E |
| Altitude [m] |
84 |
| Surface area [m2] |
70,400,000 |
Volume [m3] |
8,190,000,000 |
| Maximum depth [m] |
179 |
Mean depth [m] |
116 |
| Water level control |
Regulated |
Normal range of annual water level fluctuation [m] |
- |
| Length of shoreline [m] |
36,000 |
Residence time [yr] |
- |
| Catchment area [m2] |
102,600,000 |
Hours of bright Sunshine [hr yr-1] |
- |
| Solar radiation [MJ m-2 day-1] |
- |
Freezing period |
None |
| Mixing type |
Dimictic |
Annual fish catch [t yr-1] |
- |
| Total N loading [t yr-1] |
- |
Total P loading [t yr-1] |
- |
| Population |
- |
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 [%] |
92.1 |
Agricultural land [%] |
5.5 |
Others [%] |
2.4 |
| Siltation |
- |
Toxic Contamination |
- |
| Eutrophication |
- |
Acidification |
- |
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