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1 de Vera, M. R.. 1975. Estimation of dry season streamflow from rainfall for selected diversion irrigation systems. In International Rice Research Institute, Water management in Philippine irrigation systems: Research and operations (pp. 113-126). Los Banos, Laguna, Philippines: International Rice Research Institute.
(Location: IWMI-HQ Call no: 631.7.6 G732 INT Record No: H013)
Two multiple regression models are used to relate antecedent rainfall to dry seasons flow of 14 rivers serving diversion irrigation systems in the Philippines. The first model expresses streamflow as a function of the bimonthly rainfall totals in centimeters from the preceding 8 months, and the second model relies on the two bimonthly totals most highly correlated to flow and the number of rainy days with 25 mm or more rainfall from the preceding 6 month period. The models have little difference in their predictive accuracy. Although the standard error estimate is relatively high, equations for half of the rivers studied could explain more than 60 percent of the variation in streamflow, and for some rivers over 80 percent in the second model.
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