Data Summary: Hachiro-gata (Lake Hachirogata)
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| Site Name |
ASI-34 |
Photo : Ogata Village Office |
| Lake Name |
Hachiro-gata (Lake Hachirogata) |
| State |
Akita Prefecture |
| Country |
Japan |
| Latitude |
39:5N |
| Longitude |
139:5E |
| Altitude [m] |
0.525 |
| Surface area [m2] |
45,600,000 |
Volume [m3] |
140,000,000 |
| Maximum depth [m] |
10 |
Mean depth [m] |
4 |
| Water level control |
Regulated |
Normal range of annual water level fluctuation [m] |
0.5 |
| Length of shoreline [m] |
70,000 |
Residence time [yr] |
0.082 |
| Catchment area [m2] |
823,000,000 |
Hours of bright Sunshine [hr yr-1] |
2,026 |
| Solar radiation [MJ m-2 day-1] |
- |
Freezing period |
Dec-Mar |
| Mixing type |
Polymictic |
Annual fish catch [t yr-1] |
534 |
| Total N loading [t yr-1] |
- |
Total P loading [t yr-1] |
- |
| Population |
100,534 |
Population density of catchment area [person km-2] |
121.8 |
WATER USAGE
| Domestic water usage [m3 sec-1] |
0.002 |
Irigation water usage [m3 sec-1] |
13.9 |
| Industrial water usage [m3 sec-1] |
- |
Power generation usage [m3 sec-1] |
- |
LAND USE
| Natural landscape [%] |
49.6 |
Agricultural land [%] |
32.6 |
Others [%] |
17.8 |
| Siltation |
Not Serious |
Toxic Contamination |
Not Serious |
| Eutrophication |
Serious |
Acidification |
None |
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