Document Type

Technical Report

Publication Date



Geographical information systems, Soils, Geology, Groundwater poultry litter


A study was conducted to compile a GIS database for the Beaver Reservoir Watershed and then use the database to run the Universal Soil Loss Equation and the Phosphorus Index Model on the War Eagle Creek Watershed, a portion of the Beaver Reservoir Watershed database. Characterization of the spat i a 1 properties of the primary attributes compiled for the watershed were reported. In addition, water quality samples taken from War Eagle Creek were analyzed for relationships across the watershed. Erosion in the watershed was lower than expected with well vegetated and fertilized pastures contributing to the reduction of annual sediment yield. The Phosphorus Index Model results showed that pastures in the watershed become highly vulnerable to phosphorus transport with small amounts of phosphorus, but only a small fraction of the watershed was classified as excessively vulnerable to phosphorus transport with excessive fertilizer application rates. Aqueous total phosphorus concentrations within the watershed showed normal seasonal variability with the exception of high concentrations at one site. Aqueous orthophosphorus concentrations also showed normal seasonal variations but few other conclusions could be drawn due to the overall low concentrations. There were few conclusive trends between phosphorus concentrations and attributes from the watershed database suggesting multiple sources contributed to the phosphorus in the War Eagle Creek.

Report Number

PUB 165