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Using Analytical Methods to Develop a Surface‐Runoff Model
Author(s) -
Betson Roger P.,
Tucker Russell L.,
Haller Faye M.
Publication year - 1969
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr005i001p00103
Subject(s) - surface runoff , runoff model , storm , hydrology (agriculture) , runoff curve number , surface (topology) , environmental science , computer science , mathematics , meteorology , geology , geotechnical engineering , geography , geometry , ecology , biology
By using analytical methods, successive restrictions were imposed on a mathematical version of the U. S. Weather Bureau's graphical surface‐runoff model to develop an analytical model that expresses the API‐runoff relations with two equations and five coefficients. The analytical model is similar in concept to the graphical model in that both relate rainfall, week number, and the API measure to surface runoff. The concise relations of the analytical model, however, can be rapidly derived from a historical storm list by computer. When tested, runoff relations, derived with the analytical model over selected watersheds, predicted surface runoff from those watersheds somewhat better than the regional, graphical relations developed for the Valley.