| Nature of Slope Material | Water Content | Steepness of Slope | Stability of Slope |
|---|---|---|---|
| UNCONSOLIDATED | |||
| Loose sand or sandy silt | Dry | Angle of repose | High |
| Wet | Moderate | ||
| Unconsolidated mixture of sand, | Dry | Moderate | High |
| silt, soil, and rock fragments | Wet | Low | |
| Dry | Steep | High | |
| Wet | Low | ||
| CONSOLIDATED | |||
| Rock, jointed and deformed | Dry or wet | Moderate to steep | Moderate |
| Rock, massive | Dry or wet | Moderate | High |
| Dry or wet | Steep | Moderate |