1.4. Criteria for Optimal
Planning
31
ι
1 1 1 Γ
Fig. 1.11 Capital cost of a reservoir at current prices as a function of the total storage
capacity. (From Water Resources Center [1968].)
net costs (or benefits). Figures 1.11-1.13 show the relation between capital
costs and appropriate variables for dams, power plants, and irrigation.
Revenues (or benefits) arising mainly from flood control, new irrigation
water, hydroelectric energy, domestic and industrial water supply, and so
on are identified. The magnitude of these products and services is a direct
function of the scale of the development, which in turn is a function of
Fig. 1.12 Annual power plant cost at current prices as a function of capacity. (From
Water Resources Center [1968].)