Irrigation, Agrichemicals and the Environmental Impact, the Role of Hydrologic Non-Point Source Models

by E. Zia Hosseinipour, AScI Corp, Athens, United States,



Document Type: Proceeding Paper

Part of: Engineering Hydrology

Abstract:

The importance of pollution loads from agricultural lands and the degradation of soils and water resources has brought about extensive efforts throughout the environmental and agricultural research communities to develop tools for analyzing the quality of surface water runoff and leaching of pollutants to the underlying aquifers, and the accumulation of salts in the soil profile. The surface and subsurface transport of pollutants from agricultural lands and soil salinity problems have caused serious impairments to the environment world wide. The Non-Point Source pollution consist of mud, litter, bacteria, pesticides, fertilizers, metals, oils, salts, and other impurities washed into rivers and lakes by runoff. This paper provides an overview of the existing NPS models and delineates the areas that need further work for the models to become more functional. In addition, a brief listing of the widely used models are provided. The contents are based in part on the preliminary efforts to organize a task committee for the ASCE Surface Water Hydrology Committee on the evaluation of the existing hydrologic and non-point source transport models.

Subject Headings: Soil pollution | Hydrologic models | Water resources | Water pollution | Agricultural wastes | Water quality | Soil water

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