| Attribute | Hjalmaren × | Kasumigaura × |
|---|---|---|
| Bordering countries | ||
| Surface Area (km²) | 478 | 220 |
| Mean Depth (m) | 6.1 | 4 |
| Volume (km³) | 2.9 | 0.84 |
| Shoreline (km) | 428 | 252 |
| Catchment Area (km²) | 3575 | 1915 |
| Residence Time (yr) | 3.3 | 0.55 |
| Frozen Period | 139 days | None |
| Mixing Type | Homogeneous | Monomictic |
| Coordinates | ||
| Latitude | 59.226 | 36.036 |
| Longitude | 15.804 | 140.397 |