Mirror Lake
Hennepin County, MinnesotaView mapDirections
Minnesota PCA publishes the water-quality measurements for Mirror Lake. Here is what has been measured.
- Limited data
Mirror Lake in Hennepin County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 3.9 ft visibility.
Mirror Lake is a lake in Hennepin County, Minnesota. Limited fish-species data available. No public access — the lake is private or restricted.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2020-09-05. Methodology: how these readings are compared.
What Mirror Lake is good for
From access and monitoring records, not editorial picks.
- Ice seasonIce-out around Apr 15
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Mirror Lake is safe to swim in today is a call for the Minnesota Pollution Control Agency and the Minnesota DNR and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Mirror Lake
These are the measurements Minnesota PCA publishes for Mirror Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 3.9 ft. TSI 57.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.9ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 57 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Mirror Lake
Answers come straight from the public measurements and survey records on this page.
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Stays near Mirror Lake
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Fishing Mirror Lake
Ice season
Typical ice-out
Apr 15
Earliest Mar 26, 2007 · Latest Apr 16, 2008
Typical ice-in
Nov 26
Earliest Nov 25, 2007 · Latest Dec 1, 2006
Most recent ice-out
Apr 16
2008
6 observations · Minnesota PCA ice records
Nearby Lakes in Hennepin County
Frequently asked questions about Mirror Lake
Where is Mirror Lake?
- Mirror Lake is a lake in Hennepin County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Mirror Lake?
- Mirror Lake in Hennepin County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 3.9 ft visibility.
Is Mirror Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
When does Mirror Lake thaw?
- Mirror Lake typically has ice-out around Apr 15. Ice typically forms around Nov 26. The open water season is approximately 225 days.
Can I fish at Mirror Lake?
- Public access to Mirror Lake is listed as no on the lake record, so confirm before you make the trip. Seasons, size and bag limits, and whether you need a license are set by Minnesota's fish and wildlife agency, so check its current regulations before you go.
Explore Mirror Lake across LakeQuality
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Where this data comes from
2 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA2 samples · 2020
Analytical methods
- Field measurement/observation, generic method
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Ice data from Minnesota DNR Climate