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A Review of Water Table Management & BMP Effects on Selected Nitrogen Processes

by Julie A. Wright, Univ of Maryland, United States,
Adel Shirmohammadi, Univ of Maryland, United States,



Document Type: Proceeding Paper

Part of: National Water Conference

Abstract:

This study addresses the combined impacts of water table management (WTM) and best management practices (BMP's) on surface and ground water quality. DRAINMOD (water table management model for shallow water table conditions) is being used to model WTM and CREAMS (chemical, runoff and erosion from agricultural management systems) is being used to model BMP's. Modifications are being made in the nutrient subcomponent of CREAMS for daily determination of mineralization and denitrification processes. The present version of CREAMS uses average temperature and water functions for the period between storms rather than daily values. Water table management may introduce drastic daily changes in soil water conditions which can affect mineralization and denitrification rates.

Subject Headings: Water table | Water management | Water quality | Best Management Practices (BMPs) | Soil water | Groundwater quality | Nutrient pollution

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