REGIONAL REGRESSION MODELS OF ANNUAL STREAMFLOW FOR THE UNITED STATES

摘要: Estimates of annual streamflow volumes are needed in many different types hydrologic studies. Usually a streamgauge is unavailable at the location interest, hence regional methods that relate to readily measured geomorphic and climate characteristics provide practical solution. Hydrologic, geomorphic, climatic 1,553 undeveloped watersheds across United States used develop regression equations first two moments basin characteristics. These relations summarized for each 18 major U.S. water resource regions. The relationships remarkably precise, with adjusted R2 values ranging from 90.2–99.8% an average value 96.2% continent. usefulness these evaluated by deriving their information content terms equivalent record length. results indicate models streamflow, including runoff maps, less accu...