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APPLICATION OF IIS DISTRIBUTED HYDROLOGICAL MODEL (IISDHM) IN NAKHON SAWAN CATCHMENT, THAILAND

1998; Volume: 42; Linguagem: Inglês

10.2208/prohe.42.145

1884-9172

Raghunath Jha, Srikantha Herath, Katumi MUSIAKE,

Hydrological Forecasting Using AI

A physically based distributed mathematical hydrological model has been developed and applied into two moderate size catchments, Ping river basin in Thailand 1) and Agno river basin in the Philippines 2) of catchment areas 3300 km2 and 1600 km2 respectively. The model performed well in simulating the behavior of different hydrologic components in these two river basins. In this research, the model has been applied in the Chao Phraya river basin upto Nakhon Sawan, comparatively large river basin with 62, 716 km2 of catchment area. The simulation of hydrographs are better in the mountainous side of the catchment than the relatively flat side of the catchment. This is because the DEM in the mountainous side is better and generated rivers match the actual rivers. On the other hand, DEM of flat area is not good and generated rivers are not matching with actual rivers.