In recent years, nutrient enrichment has occurred in Lake St. Croix due to increasing amounts of phosphorus entering the lake from the watershed. According to the TMDL, approximately half of the phosphorus-loading to Lake St. Croix is in the soluble form, and agriculture has been identified as one of the largest contributors of that phosphorus. In addition to the TMDL, subwatershed analyses were completed to identify, assess, and prioritize phosphorus-reducing practices in rural areas draining to Lake St. Croix in Washington County. This project will reduce phosphorus discharges to the St.
Brown's Creek is one of the few remaining cold water fisheries in the Metropolitan Area; however, it is impaired due to high suspended solids and high water temperatures. To understand the extensive and complex in-stream temperature and local climate data already collected by the Brown's Creek Watershed District, this grant will facilitate the development of a thermal model to determine thermal sources and cost-effective management projects and practices to reduce thermal loading to Brown's Creek.
The Watershed District is partnering with the City of Stillwater to reduce sediment and thermal loading to Brown's Creek from existing impervious gravel parking lot and paved roads to achieve Total Maximum Daily Load water quality goals in this reach of Brown's Creek.
This project will implement watershed load reduction practices to restore the top priority water body in the Carnelian Marine St. Croix Watershed District in northeast Washington County. Recently completed prioritization and targeting efforts have identified several Best Management Practice opportunities around goose Lake, the number one priority for implementation practices.
The focus of this project will be on protection efforts to maintain or improve the water quality of Forest Lake by reducing phosphorus loads to the lake, especially from storm water. The two main objectives of this project are to compile and make minor updates to a large body of diagnostic work that already exists for Forest Lake, and to develop a comprehensive, site-specific implementation plan for best management practices (BMPs).
Forest Lake is one of the top recreational lakes in the metro area with a diverse and healthy fishery along with thee public accesses. The water quality of Forest Lake also impacts downstream waters, particularly Comfort Lake, the Sunrise River, and ultimately Lake St. Croix. A water quality study was completed for Forest Lake identifying nutrient reduction goals to meet state water quality standards for all three basins of Forest Lake along with the Comfort Lake-Forest Lake Watershed District's (CLFLWD) long term goal water quality goals for the lake.
This project builds upon the success of the Minimal Impact Design Standards (MIDS) Community Assistance Package by working hands-on with up to 13 communities in the St. Croix River Basin to adopt ordinance and code revisions to incorporate MIDS stormwater quality and volume standards for new development and redevelopment.
The Kelle's Creek septic system assessment project will examine septic systems throughout the Kelle's Creek watershed to identify those systems that are non-functioning, non-compliant, or an imminent threat to public health and safety. Preliminary prioritization of the septic systems within the watershed will be based on the Washington County GIS database, followed by outreach to landowners to identify willing participants. Ultimately, this project will include inspection of up to 150 septic systems within the Kelle's Creek hydrologic boundary.
The goal of this project is to gain information about the amount and sources of phosphorous flowing into Lake St Croix by implementing additional water quality monitoring and/or to reduce the amount of phosphorous flowing into Lake St Croix by implementing phosphorous reduction activities.
This project will address the nutrient impairment of Lake St. Croix through the installation of targeted stormwater treatment best management practices as prioritized in the 2014 Lake St. Croix Direct Discharge Stormwater Retrofit Assessment. The project will install up to 16 Low Impact Development practices to reduce pollutant loading to Lake St. Croix by at least 8.0 pounds phosphorous and 3,000 pounds sediment and 1.0 acre foot of stormwater per year.
This project will continue to address the nutrient impairment of Lake St. Croix through the installation of targeted stormwater treatment best management practices as prioritized in the 2014 Lake St. Croix Direct Discharge Stormwater Retrofit Assessment. The goal is to install up to 24 Low Impact Development practices to reduce urban pollutant loading to Lake St. Croix by at least 12.0 pounds phosphorous and 3,000 pounds TSS and 1.0 acre foot of stormwater per year. This project parallels many ongoing watershed restoration efforts to meet the Middle St.
This project addresses the nutrient impairment of Lily Lake through the continued installation of targeted stormwater treatment best management practices as identified in the 2010 Lily Lake Stormwater Retrofit Assessment. The goal is to install up to 16 Low Impact Development practices treating at least 8 acres of urban development to reduce pollutant loading to Lily Lake by approximately 8 pounds phosphorous, 2 tons of sediment and 3.0 acre-feet of volume per year.
The Marine on St. Croix Innovative Stormwater Management Implementation is a partnership, formalized through an MOU, between Marine on St. Croix (MOSC) and the Carnelian-Marine-St. Croix Watershed District (CMSCWD) to improve stormwater management in the most densely developed areas of the City on a neighborhood zone approach rather than site-by-site (parcel) approach for greater and more impactful results in accomplishing District and City stormwater management goals.
Moody Lake is the headwaters of the Comfort Lake-Forest Lake Watershed District northern flow network, and as such, its water quality sets the stage for downstream waters, particularly Bone Lake, Comfort Lake, the Sunrise River, and ultimately Lake St. Croix. A multi-year diagnostic and implementation feasibility study was conducted in the Moody Lake watershed to prioritize nutrient sources, target cost-effective BMPs, and estimate the measurable phosphorus reductions that will be achieved through implementation of these projects.
Approximately 70 percent of all Minnesotans rely on groundwater as their primary source of drinking water. Wells used for drinking water must be properly sealed when removed from service to protect both public health and Minnesota’s invaluable groundwater resources. The Minnesota Department of Health protects both public health and groundwater by assuring the proper sealing of unused wells.
Clean Water funds are being provided to well owners as a 50% cost-share assistance for sealing unused public water-supply wells.
As part of the Minnesota Pollution Control Agency's (MPCA's) watershed monitoring Approach, the Washington Conservation District will collect water quality samples on three lakes in the Lower St. Croix River Watershed in 2019-20; Comfort Lake, Square Lake, and Big Marine Lake. Rural and agricultural land uses are major components of all three lakes' subwatersheds and semi-urban land use is present in the Comfort lake subwatershed.