The Northeast AVGWLF A Watershed Scale Model for New England and New York State Becky Weidman NEIWPCC Barry Evans Penn State University.

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Presentation transcript:

The Northeast AVGWLF A Watershed Scale Model for New England and New York State Becky Weidman NEIWPCC Barry Evans Penn State University

AVGWLF? The Generalized Watershed Loading Function using ArcView as a Geographic Information Systems (GIS) Interface Mid Level, Watershed-Scale, Calibrated Model Examples of information required by AVGWLF to estimate nutrient and sediment transport within a watershed: Hydrology Landcover Soils Topography Weather Pollutant Discharges

The Northeast AVGWLF Objective: Consistent approach for the region to model watershed-scale NPS pollutant loading in a watershed Model Selection: Watershed-scale Mid-level in complexity Data rich User-friendly Dynamic

GIS Data Required AVGWLF Functions

Model Development Regional data layers were collected Technical Advisory Committee (made up of members from all of the Northeast states) in the region selected calibration and verification watersheds Calibration and verification watersheds have the following characteristics: Historic water quality and flow data Minimal point source inputs

27 watersheds were chosen for calibration and validation

Ashuelot River Watershed, New Hampshire

PRedICT AVGWLF Management Tool Users enter management scenarios Provides cost estimates and pollution reduction efficiencies

Progress To Date Quality Assurance Project Plan approved Calibration is in process Regional datasets are almost complete Model should be complete in the fall of 2006 For additional information, visit:

SPECIAL THANKS TO: Tom Mulcahy, NEIWPCC Barry Evans, Penn State US EPA Headquarters Additional Information: Becky Weidman,