1995•ENVIRONMENTAL SYSTEMS RESEARCHOpen access

ESTIMATION OF RUNOFF POLLUTANT LOAD FROM NONPOINT SOURCE IN URBAN AREAS

Atsushi ICHIKI, Toshiyuki OHNISHI, Kiyoshi Yamada

Abstract

The objectives of this study are to show profiles of pollutant runoff in urban rivers and into Lake Biwa and estimate runoff pollutant load from nonpoint sources in urban areas by simulations using Macro Model. As a result of the simulations, the characteristics of pollutant runoff from urban nonpoint sources and the u it basics of nonpoint pollutants were cleared. And it was shown that the control of pollutant runoff from nonpoint sources during storm events is significant to protect water quality of receiving water. From these results, some available knowledge concerned with the environmental management of water was obtained.

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Key concepts: Nonpoint source pollution, Pollutant, Surface runoff, Environmental science, Urban runoff, Clearance, First flush, Hydrology (agriculture)