A cooperative study was conducted by the U.S. Geological Survey (USGS), the Metropolitan Council, and the Minnesota Department of Health to assess groundwater and surface-water interactions in lakes in the northeast Twin Cities Metropolitan Area (TCMA), including White Bear Lake. An important product of the study was the creation of a groundwater-flow model focused on the northeast TCMA. The groundwater flow model is available for future use to assess the effects of groundwater withdrawals on lake levels as well as to describe other groundwater and surface-water interactions.
USGS will complete the following activities in support of the SCSU project Assessing the Contribution of Microhabitat Differences on Biological Effects in Bluegill Sunfish in Sullivan Lake, MN-Continuation of MN Lakes Study 2010-2011. Geospatial analysis of maps, aerial photography, satellite imagery, GIS data, and field mapping (topography, bathymetry, vegetation, habitat); Bulk characterization of the physical and chemical features of the littoral zone, inflows, and outflows.
This project will evaluate and prioritize approximately 13,000 lineal feet of Lake Koronis shoreline for shoreline erosion and vegetative buffer condition. Those property owners with the most erosion, stormwater and vegetative buffer issues will be targeted to stabilize, infiltrate and buffer their shoreline. This project will also evaluate an additional 300 properties in the subcatchment area and target those properties that are best able to capture and treat stormwater from impervious surfaces.
The short term goal of this project is to develop a K-3rd grade Ojibwe language CORE curriculum and a K-3rd Dakota language CORE curriculum designed for use in an immersion setting. Additionally, twenty five Ojibwe and Dakota Elders Speakers will be engaged in the development of the curriculum
The Twin Cities metropolitan area has a rich history and connection with its waters. In an effort to keep surface waters clean, a wide variety of stormwater practices have been developed and installed throughout the metro in recent years. Many of these, such as rain gardens and infiltration basins and trenches, are intended to reduce the total runoff volume by infiltrating stormwater. Six to seven aquifers underlie the metro area and provide residents with drinking water.
The language and cultural needs of the American Indian community in the Twin Cities urban area are high. Additionally, the urban area has Dakota and Ojibwe tribal members, as well as, other tribal members.
The goal of this project is to investigate nitrate transport and the sources of nitrate in karst for more effective implementation of best management practices that will reduce nitrate concentrations in ground and surface water.
This project will apply the Sunrise River watershed computer model generated under previous projects to selected scenarios of land-cover and land-management changes. The watershed model calibrated to conditions in the late 1990s will form the initial baseline against which all other model runs will be contrasted. Scenarios to be run will include changes in future land cover, agricultural practices, urban practices, and natural resource management.
Turbidity and sediment yield from the Le Sueur River watershed to the Minnesota River is a problem. Studies have shown that 200,000 tons/yr come from non-field sources and 25,000 tons/yr come from field sources. With this grant we will develop strategies to reduce sediment yield from the Freeborn County Cobb River Ditch subwatershed.