The ‘dead storage’ in a dam reservoir, is the available volume for collection of silt and sediment, between
‘Bank storage’ in a dam reservoir:
When the reservoir is filled up, certain amount of water seeps into the permeable reservoir banks. This water comes out as seen as the reservoir gets depleted. This volume of water is known as bank storage. The bank storage efficiently increases the capacity of the reservoir.
Design yield of a storage reservoir is kept:
With the reduction in reservoir capacity over the passage of time, the trap efficiency
Trap efficiency of a storage reservoir is defined as
Capacity-inflow ratio for a storage reservoir is defined as
Capacity-inflow ratio can be defined as the ratio of the reservoir capacity to the total inflow of water. The trap efficient is a function of the capacity-inflow ratio which is represented by a graph between them.
With the increase in its capacity-inflow ratio, the trap efficiency of a reservoir:
The capacity-inflow ratio for a reservoir
As the height of a proposed dam is increased, the cost per unit of storage
“Economical height of a Dam” is that height, for which the
The economic height of a dam is that height of dam, corresponding to which, the cost of the dam per unit of storage is minimum.