Explanation based on experts opinion

Slope (Topography)

The gentle the slope the better


Stronger foundations are preferred for dam construction

Soil type

The lower the soil infiltration rate , the better

Land Cover

Land cover prone to soil erosion are less conducive for dam construction

Proximity to Rivers

The nearer the dam to the river i.e. ≤1000 m, the better

Proximity to roads

The nearer the dam to the major roads buffer i.e. ≤1000 m, the better

Catchment size

The bigger the catchment size , the more water it can provide for the dam