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- Prediction of Water Yield of Mount Banahaw Watershed in Quezon...
Prediction of Water Yield of Mount Banahaw Watershed in Quezon Province, Philippines Using Hydrologic Water Balance Model
Thesis Abstract:
The research sites were the Janagdong River Watershed and the Dumacaa River Watershed in Quezon Province, Philippines. The hydrometeorological data such as monthly rainfall, monthly potential evapotranspiration, and observed monthly streamflow of the watersheds from 1986 to 1989 and from 1998 to 1999 were used to determine the parameters of water balance model by optimization procedure. Thereafter, the parameters were used to predict the monthly streamflow.
The values of parameters a1 = 0.09, a2 = 0.44, a3 = 0.01, a4 = 0.03, and a5 = 2.00 for Janagdong River Watershed and the values of parameters a1 = 0.01, a2 = 0.37, a3 = 0.20, a4 = 0.03, and a5 = 2.10 for Dumacaa River Watershed were obtained. The use of the model parameters was able to predict the streamflow of the two watersheds. Results showed that there was significant correlation between predicted and observed streamflow of both watersheds at 0.01 level. The test of difference of the means of the predicted and observed streamflow of both watersheds was found not significant at 0.05 level.