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EFFECT OF RAINFALL‐EXCESS DETERMINATION ON RUNOFF COMPUTATION 1
Author(s) -
Singh Vijay P.,
Buapeng Somkid
Publication year - 1977
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1977.tb05562.x
Subject(s) - surface runoff , kinematic wave , environmental science , hydrology (agriculture) , runoff model , computation , runoff curve number , mathematics , geology , geotechnical engineering , algorithm , ecology , biology
Four methods of determining rainfall‐excess are considered. They include Ø‐index and equations of Horton, Kostyakov and Philip. These methods are utilized in a nonlinear kinematic wave model to predict surface runoff from two natural agricultural watersheds. The effect of determining rainfall‐excess on surface runoff response is then examined. It is observed that errors in rainfall‐excess constitute a major source of error in runoff prediction. The choice of a method of determining rainfall‐excess is thus crucial to runoff computation.