1 | Plains, gentle slope, fine texture, high convexity | Plains area with the permissible range less than 9% gradient, dominant positive/concave convexity, fine texture indicates a high proportion of finer particles such as silt and clay. Depth of flooding in excess of 5 m | Very high flood hazard 1 |
2 | Plains, gentle slope, fine texture, low convexity | Plains area with the permissible range less than 9% gradient, dominant negative/concave convexity, fine texture indicates a high proportion of finer particles such as silt and clay. Depth of flooding 4–5 m. | Very high flood hazard 2 |
3 | Plains, gentle slope, coarse texture, high convexity | Plains area with the permissible range less than 9% gradient, dominant positive/concave convexity, coarse texture indicates a high proportion of sand. Depth of flooding 3–4 m. | High flood hazard 1 |
4 | Plains, gentle slope, coarse texture, low convexity | Plains area with the permissible range less than 9% gradient, dominant negative/concave convexity, coarse texture indicates a high proportion of sand. Depth of flooding 2–3 m. | High flood hazard 2 |
5 | Open slopes, moderate slope, coarse texture, high convexity | Open slope area with a gradient of slope between 10 and 15%, dominant positive/concave convexity, coarse texture indicates a high proportion of sand. Depth of flooding 1–2 m. | Moderate flood hazard 1 |
6 | Open slopes, moderate slope, fine texture, low convexity | Open slope area with a gradient of slope between 10 and 15%, dominant negative/concave convexity, fine texture indicates a high proportion of finer particles such as silt and clay. Depth of flooding 1–2 m. | Moderate flood hazard 2 |
7 | Upper slopes, steep slope, fine texture, high convexity | Upper slopes area with a gradient of slope between 16 and 30%, dominant positive/concave convexity, fine texture indicates a high proportion of finer particles such as silt and clay. Depth of flooding 0.5–1 m. | Low flood hazard 1 |
8 | Upper slopes, steep slope, fine texture, low convexity | Upper slopes area with a gradient of slope between 16 and 30%, dominant negative/concave convexity, fine texture indicates a high proportion of finer particles such as silt and clay. Flood depth less than 0.5 m. | Low flood hazard 2 |
9 | Upper slopes, very steep slope, fine texture, high convexity | Upper slopes area with a gradient of slope between 31 and 60%, and > 60%, dominant positive/concave convexity, fine texture indicates a high proportion of finer particles such as silt and clay. | No flood hazard 1 |
10 | Upper slopes, very steep slope, coarse texture, low convexity | Upper slopes area with a gradient of slope between 31 and 60%, and > 60%, dominant negative/concave convexity, coarse texture indicates a high proportion of sand. | No flood hazard 2 |