Impacts of Land Cover Changes and Large Reservoirs Development on Streamflow Regime of the Chao Phraya River Basin and Its Tributaries

摘要

Flow timing parameters in terms of quarter flow interval(QFI) and half-flow interval(HFI) for wet period and five-percent flow interval(5/100FI) and one-percent flow interval(1/100FI) for day season were determined basing on cumulative flow of 5-yr interval average for selected observation stations of Ping (P19A), Wang(W4A), Yom(Y3A), Nan(N5A), and lower Chao Phraya basins at C2, C7A, and C15. The investigation was carried out using secondary data of streamflow from 1956-1993 observed by RFD and forest map prepared by RFD.