| Attribute | Hamanako × | Shumarinai × |
|---|---|---|
| Bordering countries | ||
| Surface Area (km²) | 69 | 24 |
| Mean Depth (m) | 5 | 10 |
| Volume (km³) | 0.33 | 0.24 |
| Shoreline (km) | 92 | 83.5 |
| Catchment Area (km²) | 630 | 312.1 |
| Residence Time (yr) | 7.8 | 68 |
| Frozen Period | None | Nov-May |
| Mixing Type | Monomictic | - |
| Morphogenesis/Dam | - | Uryu Dai-ichi Dam (1943) |
| Coordinates | ||
| Latitude | 34.749 | 44.302 |
| Longitude | 137.569 | 142.185 |