Lake St. Croix Direct Discharge Stormwater Retrofit Phase II
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. Croix's phosphorous load reduction goal 1,521 pounds of phosphorous per year identified by the MPCA as part of the 2012 Lake St. Croix Total Maximum Daily Load (TMDL) .
See http://www.bwsr.state.mn.us/aboutbwsr/index.html and http://www.bwsr.state.mn.us/aboutbwsr/boarddirectory.pdf
See http://www.bwsr.state.mn.us/aboutbwsr/index.html
Marcey Westrick
Projects and Practices 2016: Laws of MN 2015 First Special Session Chapter 2, Article 7, Section 7
A 2009 study identified increased stormwater runoff, erosion, and wastewater discharge associated with historical land use change as the root causes of eutrophication in Lake St. Croix. Proposed Low Impact Development retrofits to a 1,852 acre urban pipeshed are estimated to prevent at least 10 pounds of phosphorus/year and 3,000 lbs/year of suspended solids from directly discharging into Lake St. Croix.
This project resulted in an estimated annual reduction of 37.7 lbs of phosphorus, 5.98 tons of sediment, and 8.5 acre-feet per year of water volume.
LOCAL LEVERAGED FUNDS