Edina

ABOUT ARROWHEAD LAKE

Arrowhead Lake, south of Highway 212 in Edina, is a shallow lake that has poor water quality.

street map of Arrowhead Lake area
Arrowhead Lake, Edina

Water Quality

graph showing phosphorous levels in Arrowhead Lake
Phosphorous levels in Arrowhead Lake have been higher in recent years; phosphorous levels are higher than the state standard.

Water quality of Arrowhead Lake is poor, measurements for phosphorous and water clarity fail to meet the state standards for shallow lakes. The latest data from 2020 concludes that Arrowhead Lake is impaired. Arrowhead is a land-locked basin with no surface outlet. For that reason, the lake water doesn’t flush out, causing nutrients to build up in the lake, especially during large rain events. Although more nutrients generally lead to more algal and plant growth, more nutrients do not guarantee more plant diversity. Monitoring teams only catalogued two different plant species in the 2020 plant survey. One of the two plants was an invasive species. Overall Arrowhead Lake’s water quality is poor and its plant diversity is also poor with invasive species present.

 

graph showing Chlorophyll-a levels in arrowhead lake over time
Chlorophyll-a levels in Arrowhead Lake have increased and are now worse than the state standard.
graph showing water clarity on arrowhead lake over time.
Arrowhead Lake’s water quality has decreased in  recent years of monitoring; the lake’s water quality is now worse than the state standard.

 

 

 

 

 

 

 

Printable lake fact sheet

Current Projects

The Nine Mile Creek Watershed District has not conducted any major water quality improvement projects on Arrowhead Lake. Currently, Nine Mile Creek Watershed District does not have a water quality improvement project planned for Arrowhead Lake. However, staff and engineers are conducting a water quality study called a Use Attainability Analysis (UAA) on Arrowhead and Indianhead Lakes to identify potential water quality improvement projects. Learn more at the UAA page here: Arrowhead and Indianhead Lake Study

The District has helped fund several best management projects near Arrowhead Lake. Best management projects include raingardens, shoreline buffers, habitat restorations, and more. These projects help reduce runoff that enters Arrowhead Lake.

For information about other past District projects, click here.

Recreation

Arrowhead Lake does not have opportunities or access for public recreation.

 

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. Any information they have can be found here:

https://www.dnr.state.mn.us/lakefind/index.html

Downloadable water quality data can be found here:

https://www.pca.state.mn.us/water/water-quality-data

diagram of ways to clean water—clean off boats for AIS, sweep up leaves and grass, pick up after pets, and plant native plants