Linking a hydrologic model for small urban watersheds to a geographic information system.

摘要

A series of approaches were developed for integrating the TR-55, a hydrologic simulation model for small urban watersheds, with two grid based geographic information systems--IDRISI and Map Analysis Package. A geographic information system database for a small urban experimental watershed was developed. Thirty storm rainfall-runoff events were used to test the integration of hydrological model and GIS. It was found that the simulated runoff from geographic information system was much better than that from conventional methods.