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Hydrologic Modeling Based On Remote Sensing And GIS Technologies

This study uses SPOT satellite image data to recognize watershed land use characteristics and DTM model to analyze topographic features and thus builds up watershed geographic data base. A GIS software ARC/INFO is used to obtain the required parameters from the data base and applied to HEC-1 hydrologic modeling. result shows that remotely sensed data combined with GIS technologies can be quite useful in hydrologic modeling. The