The SCS Curve Number Method is a widely used hydrological technique developed by the Soil Conservation Service (now part of the Natural Resources Conservation Service) for estimating direct runoff from a rainfall event. This method uses a curve number (CN) that reflects the land use, hydrologic soil group, and moisture conditions to predict the amount of runoff generated from rainfall. It connects closely with various hydrological modeling approaches, surface runoff generation processes, urban hydrology particularly concerning impervious surfaces, and hydrograph analysis by providing a simplified yet effective way to estimate runoff characteristics.
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