ABOUT BIRCH ISLAND LAKE
Birch Island Lake, located just east of Purgatory Creek in Eden Prairie, is a shallow lake with vegetation that fills the lake’s bottom.
Water quality of Birch Island Lake is poor, with average nutrient levels higher than state standards for shallow lakes. Latest data collection from 2020 observed that the lake is impaired. But, Birch Island Lake does have a diverse range of aquatic plants present in the lake. There are a total of 12 different plant species. Typically the plant community in the western two thirds of the lake is primarily comprised of cattails and other wetland vegetation. However, heavy rainfall during June of 2014 raised the water level in the lake by 6 feet, causing cattails to die off. In 2015, the invasive species purple loosestrife was recorded in aquatic plant cataloging.
Printable lake fact sheet
Water levels of Birch Island Lake had declined by about seven feet since the mid-1980s. To bring Birch Island Lake back to a normal level, in 2008, the District installed a pipe to direct water from the area north of 62 into the lake. The Nine Mile Creek Watershed District also cleaned out and improved two existing stormwater basins and constructed a new stormwater pond to treat stormwater runoff prior to reaching Birch Island Lake to improve water quality. This project was part of the larger Eden Prairie Lakes Water Quality Improvement Project. Since installation of the tile system, water levels in Birch Island Lake have rebounded.
For information about other past District projects, click here
Nearby Birch Island Park has a hiking trail, picnic area, and playground. Birch Island Lake has canoe access.
The Minnesota Department of Natural Resources may have additional information on the lake (including fishing regulations; location; water access sites; lake maps; lake reports on stocking, ice in/out and water quality; fish consumption; and aquatic plant surveys) if so, that information can be found here:
Downloadable water quality data can be found here: