| Damage class | Factors name | |||||||
| Elevation (m) | Slope (%) | Shoreline distance (m) | River distance (m) | Vegetation | ||||
| Kitakami | Unga canal | Index | Density | |||||
| High (5) | −4 - −1 | 0 - 1 | 0 - 489.94 | - | - | −0.998 - 0.151 | Low | |
| Slightly high (4) | −1 - 0 | 1 - 3 | 489.94 - 885.76 | - | - | 0.151 - 0.164 | Slightly low | |
| Medium (3) | 0 - 2 | 3 - 6 | 885.76 - 1332.84 | 0 - 160 | - | 0.164 - 0.188 | Medium | |
| Slightly low (2) | 2 - 8 | 6 - 8 | 1332.84 - 1821.46 | 160 - 680 | 0 - 300 | 0.188 - 0.218 | Slightly high | |
| Low (1) | >8 | >8 | 1821.46 - 2345.53 | >680 | >300 | 0.218 - 0.556 | High | |