Site with Poor Capacity-Inflow Ratio 

The selection of site for a dam and its hydraulic design depends on the capacity-inflow (CI) ratio, and a favorable CI ratio indicates a longer life of the reservoir.

For KBD, the capacity-inflow ratio is 6.1/90 = 0.07 i.e. 7% with respect to the live storage of the reservoir (for both the Indus and Soan limbs). Since Soan River is an Indirect limb of Indus, therefore the actual capacity inflow ratio for the main Indus stem would be 3.5/90= 0.04 = 4%, which is very poor, for the design of a storage dam.