| Attribute | Hamanako × | Hachiro × |
|---|---|---|
| Bordering countries | ||
| Surface Area (km²) | 69 | 46 |
| Mean Depth (m) | 5 | 4 |
| Volume (km³) | 0.33 | 0.14 |
| Shoreline (km) | 92 | 70 |
| Catchment Area (km²) | 630 | 823 |
| Residence Time (yr) | 7.8 | 0.08 |
| Frozen Period | None | Dec-Mar |
| Mixing Type | Monomictic | Polymictic |
| Morphogenesis/Dam | - | Remainder of Hachiro-gata (1978) |
| Coordinates | ||
| Latitude | 34.749 | 39.924 |
| Longitude | 137.569 | 140.022 |