Long-Term Hydrologic Impact of Urbanization: A Tale of Two Models

摘要: At a watershed scale, land-use change can increase runoff, flooding, and nonpoint source pollution degrade downstream water bodies. Thus it is important to assess the potential hydrologic impacts of prior development. The L-THIA (Long-Term Hydrologic Impact Assessment) model tool initially how affects annual average runoff based only on readily available data. Because relatively new, test against other, well-accepted methods. U.S. Environmental Protection Agency's SWMM (Storm Water Management Model), well-known widely used model, was perform calculations for comparison with L-THIA. Applications two small watersheds in Chicago show that predicts between 1.1 23.7% higher than SWMM. agreement results larger watersheds. Both models predict linear relationship incre...