| Attribute | Okutama × | Kamafusa × |
|---|---|---|
| Bordering countries | ||
| Surface Area (km²) | 4 | 4 |
| Mean Depth (m) | 44.4 | 11.6 |
| Volume (km³) | 0.18 | 0.04 |
| Shoreline (km) | 45.4 | 28 |
| Catchment Area (km²) | 259 | 191.4 |
| Residence Time (yr) | 0.68 | 0.18 |
| Frozen Period | None | None |
| Mixing Type | Monomictic | Monomictic |
| Morphogenesis/Dam | Ogochi Dam (1957) | Kamafusa dam (1970) |
| Coordinates | ||
| Latitude | 35.791 | 38.201 |
| Longitude | 139.049 | 140.692 |