2004 UC Proceedings Abstract
AVGWLF Non-Point Source Pollution Model Track: Water Resources Author(s): David Gilbert, Amanda O'Shea, Barry Evans To determine the amount of degradation that has occurred from recent development and to provide targets for recovery, a GIS-based version of the Generalized Watershed Loading Function (GWLF) model on the Spring Creek Watershed in Centre County, PA, was utilized. This freely available model permitted planners to compare the results of existing conditions with those of non-impaired conditions as well as with parameters using Best Management Practices (BMPs) for stormwater and agriculture run off. A three-step process was followed. First, run the AVGWLF model on existing conditions to determine nutrient and sediment loading as of year 2003. Next, run the model using 'non-impaired' criteria to determine a target loading volume by sub-basin for mitigation goal setting. Last, run the model using specific assumed loading volumes (PRedICT software) from BMPs to evaluate nutrient and sediment loads under varying scenarios. David Gilbert Gannett Fleming GeoDecisions 2601 Gateway Drive State College , PA 16801 US Phone: (814)234-8625 Fax: 814-234-8625 E-mail: dgilbert@gfnet.com Amanda O'Shea Gannett Fleming GeoDecisions 2601 Gateway Drive State College , PA 16801 US Phone: 814-234-8625 Fax: 814-234-8086 E-mail: aoshea@gfnet.com Barry Evans consultant Penn State Institutes of the Environment (PSIE) ERRI Building University Park , PA 16802 US Phone: 814-865-3357 E-mail: bme1@psu.edu |
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