Iwaseike Reservoir
| Reservoir Name | Iwaseike |
| Dam Name | Iwaseike |
| River | Takasegawa |
| Country | Japan |
| Year | 1592 |
| Dam Height | 18 |
| Dam Length | 144 |
| Area(Sqkm) | 0.2 |
| Area(Polygonal) | 0.2 |
| Capital Expenditure | 1 |
| Depth(M) | 5 |
| Avg Displacement Of Water | 48 |
| Catchment Area In Sqkm | 2 |
| Status | 2: Good |
| Longitude | 133.772083 |
| Latitude | 34.16625 |
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