Maumee River Basin Pilot Watershed Study. Volume I. Watershed Characteristics and Pollutant Loadings, Defiance Area, Ohio

摘要

Five small agricultural watersheds and eight plots in the Maumee River Basin of Ohio were instrumented for measurement of sediment and nutrients leaving the land under prevailing land use management. These results were compared with loadings from larger watersheds in the Basin and with downstream tributary loads. Studies were also conducted on sediment transport, adsorption-desorption of sediment-P, and heavy metal and pesticide loss from the Basin. Monitoring during 1975-1977 showed that there were significant differences in sediment and nutrient losses among different soil types in the Basin. Greatest sediment losses occurred on the level and very poorly drained, high-clay lake plain soils as well as the sloping, dissected lake plain clay soils.