The proposed project will provide cost share funding and technical assistance for landowners to design and implement medium-sized water quality BMPs. The installation of these projects will have measurable outcomes that will benefit water quality. BMPs could include gully stabilizations, infiltration basins, bioretention basins, hydrodynamic separators, other stormwater runoff controls and streambank and shoreline protections.
The Vermillion River and its subwatersheds are priority resources in local and regional plans including the Vermillion River Watershed Management Plan and the Dakota County Groundwater Plan. Prioritized agricultural BMPs and nitrate reduction BMPs, a subwatershed analysis, and project development of irrigation and groundwater protection practices will further the goals of the plans above.
Implementation of Vadnais Lake Area WMO (VLAWMO)'s existing Landscape Level 2 Grant Program to install at least 1 BMP project between 2023-2025 to make progress on water quality impairments within four priority subwatersheds: Lambert Creek, Goose, Birch, and Gilfillan-Tamarack-Black-Wilkinson-Amelia. Eligible BMPs include project types identified in the Board-approved Landscape Level 2 Grant Policy. The anticipated outcome is a reduction in phosphorus by at least 0.3 pounds annually. This activity will also result in strengthened partnerships with Vadnais Lake Area WPA communities.
In Dakota County, groundwater supplies more than 90 percent of the drinking water. In order to protect Dakota County's primary drinking water source, this project proposes to support the County well seal grant cost-share program. The project will provide 50 percent cost-share funding to reimburse landowners for the sealing of unused wells. The goal is to permanently seal between 80-100 unused/abandoned wells throughout the county.
The Elm Creek Commission had previously completed subwatershed assessments in two areas of the watershed. The Rush Creek Headwaters subwatershed includes much of western Corcoran and parts of Rogers, which are drained by North Fork Rush Creek. The Diamond Creek SWA assessed the direct drainage area to French and Diamond Lakes, and the area tributary to downstream Diamond Creek. This project would support implementation of projects and practices identified in the Rush Creek Headwaters and Diamond Creek SWAs.
Installation of approximately 8 curb-cut rain gardens in St. Paul right-of-way to reduce phosphorus loads by approximately 1.2 pounds annually. Adjacent property owners will be engaged throughout the process and will be responsible for long-term maintenance. Ramsey County Soil and Water Conservation Division will be completing designs which will be approved by City of St. Paul. Approximately six of these gardens will be installed in high priority areas as defined in CRWD's 2021-2030 Watershed Management Plan.
The Lower St. Croix (LSC) Partnership will implement projects and practices in order to achieve a cumulative phosphorus reduction of 381 lb/yr to priority waterbodies identified in Table 5-2 and Table 5-3 of the LSC Comprehensive Watershed Management Plan (CWMP). It will also implement practices in order to protect groundwater, particularly in areas identified in CWMP Figure 5-1 Vulnerable Groundwater in Agricultural Areas. Projects and practices will include structural agricultural BMPs, structural urban BMPs, non-structural ag and urban BMPs, and wetland restorations.