Abstract |
Relationships between hydrologic response, storm discharge volumes and the physical and land use properties of 21 small watersheds in the eastern United States were analyzed by multiple regression. The best correlations achieved were with the log of discharge of the 20 largest storm flows, storm precipitation, area in uplands, area in urban land use in valley bottoms and a soil factor. Analyses using these parameters explained 74 percent of the variation in storm flow for 11 basins in the same climatic region. The principal effect of geomorphic basin factors is on peak flows rather than volumes. The basin is adjusted in its physical attributes to the larger storm events. (Author) |