Data Summary: Inba-numa (Lake Inba)
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|
Site Name |
ASI-29 |
Photo : A. Kurata |
|
Lake Name |
Inba-numa (Lake Inba) |
|
State |
Chiba Prefecture |
|
Country |
Japan |
|
Latitude |
35:4N |
| Longitude |
140:1E |
|
Altitude [m] |
- |
| Surface area [m2] |
11,550,000 |
Volume [m3] |
27,700,000 |
| Maximum depth [m] |
2.5 |
Mean depth [m] |
1.7 |
| Water level control |
Regulated |
Normal range of annual water level fluctuation [m] |
0.8 |
| Length of shoreline [m] |
26,400 |
Residence time [yr] |
0.08 |
| Catchment area [m2] |
487,180,000 |
Hours of bright Sunshine [hr yr-1] |
2,370 |
| Solar radiation [MJ m-2 day-1] |
- |
Freezing period |
- |
| Mixing type |
Polymictic |
Annual fish catch [t yr-1] |
851 |
| Total N loading [t yr-1] |
1472 |
Total P loading [t yr-1] |
143.6 |
| Population |
540,170 |
Population density of catchment area [person km-2] |
1,109 |
WATER USAGE
| Domestic water usage [m3 sec-1] |
0.004 |
Irigation water usage [m3 sec-1] |
0.015 |
| Industrial water usage [m3 sec-1] |
0.016 |
Power generation usage [m3 sec-1] |
0 |
LAND USE
| Natural landscape [%] |
33.7 |
Agricultural land [%] |
42.5 |
Others [%] |
23.8 |
| Siltation |
- |
Toxic Contamination |
- |
| Eutrophication |
Serious |
Acidification |
None |
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