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The Northeast Avgwlf: A Watershed Scale Model to Predict Sediment and Nutrient Transport

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The New England Interstate Water Pollution Control Commission (NEIWPCC) and Pennsylvania State University (Penn State) tailored the Generalized Watershed Loading Function with an ArcView (AV) geographic information systems (GIS) interface (AVGWLF) for the New England states and New York State. The Northeast AVGWLF is a calibrated, watershed-scale model that uses hydrology, land cover, soils, topography, weather, pollutant discharges, and other critical watershed-related characteristics to model sediment and nutrient transport within a watershed. This model was designed for: the development of nonpoint source (NPS) pollution Total Maximum Daily Loads (TMDL) and developing pollutant load reduction estimates for the NPS ยง319 program. The Northeast AVGWLF was developed to assist the New England states and New York State to more effectively implement their water quality programs, while encouraging the implementation of these programs on a watershed, interstate, and regional scale. Upon completion of the calibration of the Northeast AVGWLF, the model was found to perform reasonably well in selected model validation watersheds.


Document Type: Research Article


Publication date: 2007-10-01

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