Hydrologic Flow Determination for Hydropower Feasibility Analysis

摘要

A study was made of methods for determining average annual runoff from ungaged watersheds and the use of such runoff in the estimation of flow duration curves for hydropower feasibility studies. Methods included the use of precipitation-input maps, water yield maps, and regression equations utilizing basin characteristics. The various methods were tested on gaged and ungaged watersheds in Idaho and results compared with each other, as well as with actual flow measurements. The use of watershed characteristics such as mean basin elevation, cover density, and annual precipitation were tested and compared and it was found that precipitation alone provided the best and simplest approach for determining runoff.