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Round Lake

Located in Eden Prairie, Round Lake is a part of the Purgatory Creek Chain of Lakes. With a park and trail system around the lake, it is a popular recreation spot.

Round Lake is classified as a “Deep Lake” by the MPCA. To be considered healthy, the lake must have very low average phosphorus and chlorophyll-a levels and an average water clarity of 1.4 meters (4.6 feet) or greater.

From June through September every year, District staff visit this and other lakes every two weeks to collect water samples and take readings.  Samples are sent to a laboratory to be tested for nutrients and other compounds. Staff also measure water clarity by lowering a Secchi disk into the water and measuring how deep it goes before it is no longer visible. The data indicates the lake’s health based on standards set by the MPCA.

Round Lake - Water Quality Grade

Lake WQ Grade B.pngRPBCWD staff assigned this letter grade to the lake based upon how well it is meeting water quality goals. Learn more about lake water quality grades.

For more information about the water quality and grades for lakes monitored in the District, visit the lake factsheets page.

Lake Factsheet

Round Lake Factsheet

Several water quality parameters are monitored for the lake including Total Phosphorus, Chlorophyll-a, and water clarity. The results are compared to standards set by the MPCA. The District also collects data about native aquatic plant populations and invasive species. Learn more in the lake factsheet.

Open Factsheet

Watershed Location

Lake and Watershed Characteristics

Size 30 acres
Volume 327 acre-ft
Average depth 11 ft
Max depth 37 ft
Watershed size 475 acres
Land draining directly into 105 acres
MPCA lake classification Deep
Impairment listing Mercury & Perfluorooctane (PFOs)
Trophic status Eutrophic
Common fish Bluegill, Northern Pike, Yellow Bullhead, Yellow Perch
Invasive species Curlyleaf Pondweed, Eurasian Watermilfoil, Common Carp, Brittle Naiad

For more information about waterbody impairments, visit the Minnesota's Impaired Waters List webpage managed by the Minnesota Pollution Control Agency.

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DNR LakeFinder

Get information on water levels, fish stocking, and water clarity.

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MPCA Surface Water Data

Find historical lake and stream water quality data.

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Metropolitan Council

View and download information on lakes, rivers, streams, rain gauges