Little Rock Lake,in Benton County, is negatively impacted for nutrients. Little Rock Lake is a significant regional recreational lake. Toxins released by blue green algae blooms have been the highest ever measured by the Minnesota Department of Health. Given the importance of this resource and the severity of the water quality problems, obtaining tangible water quality improvements is a high priority in the Benton and Morrison County local water management plans.
The water quality and recretional value of Little Rock is negatively impacted by phosphorus. One important strategy involves reducing the quantity of phosphorus imported to the watershed through animal feeding operations. Farm management strategis coupled with traditional conservation practices will reduce surface runoff and phosphorus transport from feedlots and fields. This project will assist corporate poultry industry and local farmers to put into practice animal feed management strategies that reduce the amount of phosphorus contained in chicken feed rations.
Little Rock Creek, a cold-water trout stream in central Minnesota, is impaired due to the lack of trout and other cold water fish. The trout are absent because of high water temperatures, low dissolved oxygen and high nitrate levels, stressors caused from a lack of base flow and overuse of groundwater. This project continues a 2011 initiative to assist irrigators in the Little Rock Creek groundwater recharge area with managing the timing and amount of irrigation applied to their crops.
The Little Rock Lake Total Maximum Daily Load study has identified areas in the watershed where phosphorus reduction is needed and what best management practices need to be applied. This is a coordinated implementation effort with Benton and Morrison Soil and Water Conservation Districts and Natural Resources Conservation Service, the Little Rock Lake Association, the livestock industry and other partners to install best management practices at numerous sites to continue cleaning up Little Rock Lake.
The project will restore and protect cold-water streams for natural occurring brook trout, a sensitive, and semi-rare species, by removing an undersized culvert. The structure is a fish barrier and is creating bank erosion. The project is part of a watershed project identified in local planning efforts and through collaboration with local partners.
Provide approximately 15 matching grants for local parks, trail, acquisition of natural areas and trails to connect people safety to desirable community locations and regional or state facilities.
Leveraging new statewide climate data, we will assess future change in the duration, frequency and magnitude of heavy precipitation and drought events and engage communities to prepare for these extremes.
The Benton County Local Water Management Plan's first priority concern is feedlot and nutrient management. Our objective is to reduce or minimize the negative impact of animal manure and fertilizer on surface and ground water by increasing the adoption of feedlot, manure, fertilizer and pasture best management practices.
The Benton SWCD is applying to use Clean Water funds to work with livestock producers in implementing a variety of BMPs including, but not limited to cropland erosion control projects (water and sediment control basins, grade stabilization structures), extending buffers where appropriate to exceed state buffer laws, riparian pasture management and conversion to other uses, nutrient management and feedlot pollution control systems. Our goal is to reduce runoff from these sites and improve water quality within the Mayhew Lake and Big Elk Lake watersheds.
