This project will continue to develop, and calibrate/validate the hydrology of an Hydrological Simulation Program FORTRAN (HSPF) watershed model for the Buffalo River watershed. The consultant will add representation of point source discharges to the model. The consultant will compile flow data for the purposes of calibration and validation. An initial hydrologic calibration will be performed and submitted for approval.
The goal of this project is to address public comments on the public noticed draft Watershed Restoration & Protection Strategy (WRAPS) study and Total Maximum Daily Load (TMDL) report for the watershed, and to produce a final draft WRAPS study and TMDL report ready for final approval by the United States Environmental Protection Agency (USEPA) and Minnesota Pollution Control Agency (MPCA).
This project will construct, calibrate, a set of HSPF watershed models covering the entire area of the Lake of the Woods drainage, including the Rainy River watershed. The consultant will produce HSPF models that can readily be used to provide information to support conventional parameter TMDLs. The consultant will clearly demonstrate that these models generate predicted output timeseries for hydrology which are consistent with available sets of observed data.
This project will maximize the utility and usefulness of three HSPF models that have been constructed and calibrated for hydrology. The contractor will identify and reduce parameterization errors in the following three HSPF models: 1) Buffalo River Watershed, 2 ) Thief River Watershed, 3) Bois de Sioux-Mustinka Watersheds. This will result, not only in a better hydrology calibration, but will also improve each of the models’ ability to more accurately estimate sediment and pollutant loads and concentrations.