Sunfish Lake is located in the City of Sunfish Lake, within the
Lower Mississippi River Watershed Management Organization (LMRWMO).
Land use within the watershed is primarily low density residential.
Statistics
| Maximum Depth | 32 Feet |
| Lake Size | 46.9 Acres |
| Watershed Size | 235 Acres |
| Lake Classification | Deep |
| Metro Council Lake Grade | A |
Water Monitoring Data
The LMRWMO partners with the Metropolitan Councils Citizen Assisted Monitoring Program
See water monitoring reports for more information.
Contact the LMRWMO Administrator for information on becoming a water quality monitor for a nearby lake or stream.
Lake Impairments
A 2012 study conducted by the LMRWMO identified
internal phosphorus from the lake bottom as the
primary source of phosphorus in Sunfish Lake.
Next Steps
The lake will continue to be monitored to track water quality.
Water Monitoring Reports
Projects Implemented
In 2017, the LMRWMO implemented an in-lake
aluminum sulfate (alum) treatment to improve
water quality. Upon application, the alum binds with
phosphorus as aluminum phosphate and settles to the
lake bottom. A significant improvement in water quality
has been shown from this treatment, with the lake
removed from the impaired waters list in 2022.
2017 Alum Treatment Project