This project will conduct a 2017 revision of the South Fork Crow River, North Fork Crow River and Sauk River Watershed Hydrological Simulation Program FORTRAN (HSPF) models and review of the Pine River Watershed HSPF model.
The goal of this project is to finalize the draft Lake Pepin Total Maximum Daily Load (TMDL) Report, issue it for public comment, address comments, and finalize the report. Lake Pepin is impaired by high levels of nutrients that cause excessive growth of algae. High levels of sediment, carried in by major river systems, also affect the lake. The sediment is filling in the lake at a much faster rate than before Minnesota was settled and intensely farmed. Nutrients and sediment are distinct yet inter-related pollutants, and are being addressed in separate TMDL reports.
This project is a continuation of a Total Maximum Daily Load (TMDL) study that addresses lake eutrophication (phosphorus) in two lakes that are on the 2014 United States Environmental Protection Agency 303(d) list of impaired waters, located in the Pine River Watershed. The contractor will be responding to public comment on the Pine River TMDL.
The primary goal of this project is to examine the calibration and validation of recently extended Hydrological Simulation Program – FORTRAN (HSPF) watershed models for the Mississippi River-Headwaters, Mississippi River-Grand Rapids, Mississippi River-Brainerd, Mississippi River-Sartell, Mississippi River-St. Cloud, Leech Lake, Pine River, Crow Wing River, Long Prairie River, and Redeye River watersheds and revise the calibration.