| Attribute | Suwa × | Nagase × |
|---|---|---|
| Bordering countries | ||
| Surface Area (km²) | 13 | 2 |
| Mean Depth (m) | 4.7 | 28.2 |
| Volume (km³) | 0.06 | 0.05 |
| Shoreline (km) | 15.9 | - |
| Catchment Area (km²) | 515.3 | 295 |
| Residence Time (yr) | 0.11 | 0.06 |
| Frozen Period | Jan-Feb | None |
| Mixing Type | Dimictic | - |
| Morphogenesis/Dam | techtonic | Nagase Dam (1957) |
| Coordinates | ||
| Latitude | 36.05 | 33.704 |
| Longitude | 138.084 | 133.865 |