This project will construct, calibrate, and validate an HSPF watershed model for the Zumbro River watershed. The consultant will produce HSPF watershed models that can readily be used to provide information to support conventional parameter Total Maximum Daily Load (TMDLs). The consultant will clearly demonstrate that the models generate predicted output timeseries for hydrology, sediment, nutrients, and dissolved oxygen that are consistent with available sets of observed data.
The Zumbro River watershed HSPF model will be refined to include recent data and information as well as evaluate various management scenarios to inform the most effective actions for reducing sediment and nutrient loading and improving water quality. Specifically, to provide the foundation for the Lake Zumbro Phosphorus Total Maximum Daily Load (TMDL).