Review of Watershed Water Quality Models.

Abstract

Abstract : This review was conducted to determine the current state of the art in watershed water quality modeling. Several available watershed water quality models were reviewed and rated with regard to their potential in being utilized as the building block for the development of a Corps of Engineers watershed water quality model. Watershed water quality models are currently being implemented for predicting watershed runoff water quality as influenced by land use change, development, watershed improvement strategies, best management practices, and in the determination of total daily maiiimum loads. The model selected as a building block for the Corps of Engineers model will be implemented into the U.S. Army Engineer Waterways Experiment Station's Watershed Modeling System (WMS). The WMS can be used currently in the application of watershed models for both preprocessing and postprocessing. Current models contained in the WMS do not have water quality capabilities. Thus, the implementation of the selected watershed water quality model into the system will extend the capabilities of the system to include watershed water quality modeling.