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.
RPBCWD 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.
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 FactsheetSize | 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.
DNR LakeFinder
Get information on water levels, fish stocking, and water clarity.
MPCA Surface Water Data
Find historical lake and stream water quality data.
Metropolitan Council
View and download information on lakes, rivers, streams, rain gauges