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.
This project will finalize the Hydrologic Simulation Program FORTRAN (HSPF) watershed model construction and complete the calibration/validation process. The consultant will produce an HSPF watershed model that can readily be used to provide information to support conventional parameter TMDLs. The consultant will clearly demonstrate that this model generates predicted output timeseries for hydrology, sediment, nutrients, and dissolved oxygen which are consistent with available sets of observed data.
This project will develop the Pomme de Terre Watershed Total Maximum Daily Load (TMDL) study for the second round of the 10-year watershed approach cycle in the Pomme de Terre watershed. This phase of the project will address 4 stream impairments and 3 lake impairments and produce a draft TMDL document. A second phase may be needed as the stressor ID report identifies more stream reaches with TMDL relevant stressors.
Certain stretches of the Pomme de Terre River have been identified as impaired. This project will quantify the reductions in pollutant loading that would be necessary to bring water quality in the impaired stretches to an acceptable level. It will also identify strategies that would improve water quality in these impaired stretches. Some funds will support public input activities into the Pomme de Terre River watershed management plan.
International Water Institute (IWI) staff will monitor 24 sites in the Bois de Sioux, Mustinka (2 sites), Buffalo (8 sites), Red Lake (4 sites), Sandhill (3 sites), Thief (2 sites), and Tamarac River (3 sites) Watersheds intensively over a 2 year period in an attempt to collect 25 samples per year at each site. If conditions allow for the collection of all planned samples, 1200 stream samples will be collected over the time period. Monitoring will include field measurements, observations, and at least three photographs during each site visit.
MN Legislative Clean Water Fund funding to engage citizens in local watershed monitoring, work with regional partners to promote understanding and protection of watersheds, and organize and facilitate gathering of scientific data all for the benefit of water quality in the Red River Basin.
The goal of this project is the continued development of an overall strategy for reduction of turbidity/TSS, with sets of sediment reduction initiatives and actions for various sources, to address the Minnesota River Turbidity TMDL and the South Metro Mississippi River TSS TMDL. The overall strategy will be used to help establish a path towards achieving the required reductions of turbidity/TSS.