Final Township Testing Nitrate Report: Polk County 2018-2019 Image Date Issued 2020-12 Main Topic Drinking Water Groundwater Water Quality & Pollutants Water Monitoring & Assessment
Polk County Private Well Pesticide Sampling Project Results Summary Image Date Issued 2020-09-23 Main Topic Drinking Water Groundwater Water Quality & Pollutants Water Monitoring & Assessment
Bulletin No. 25 - An Inventory of Minnesota Lakes Image Date Issued 1968 Main Topic Surface Water Water Quality & Pollutants Water Use & Availability Water Conveyance & Hydraulics Water Policy
Lake Assessment Program 1989 - Sand Hill Lake, Polk County, Minnesota Image Date Issued 1990 Main Topic Surface Water Water Quality & Pollutants Water Use & Availability Water Conveyance & Hydraulics