Operational economy through applied hydrology

A water supply forecasting scheme to define and illustrate the general principles governing the economics of operation for hydropower plants, reservoirs, and certain other water works are shown. The many alternate selections of operating schedules are explained and shown by examples of actual data. Water supply forecasts are an important factor in these estimates to produce the maximum of returns to the operators. Antecedent precipitation and precipitation frequency charts are illustrated together with percentile positions to enter a nomogram to arrive at the moneys to be anticipated from an assumed schedule of operation. Several trial runs must be made and judged by the results as to which schedule is the most feasible to follow. A general outline for the procedure is shown in a list of 8 steps to be followed.