Lower Rainy Hydrologic Simulation Program FORTRAN (HSPF) Model Point Source Extension

The United States Environmental Protection Agency (USEPA) requires the Minnesota Pollution Control Agency (MPCA) to carry out the Total Maximum Daily Load Program (TMDL) in the state of Minnesota. Minnesota has an abundance of lakes and river reaches, many of which will require a TMDL study. In an effort to expedite the completion of TMDL projects, the MPCA constructs watershed models. These models support the development of TMDL studies for multiple listings within a watershed. In 2017 the Lake of the Woods (LOW) watershed HSPF model was extended through 2014. The LOW Watershed HSPF model is currently being extended through 2019. In order to extend the model, many sources of data need to be processed into continuous timeseries of flow and necessary water quality components. This work will involve the extension of the flow and water quality input timeseries for the National Point Discharge Elimination System (NPDES) permitted point source dischargers in the Little Fork River, Big Fork River, and Lower Rainy River watersheds.