Unnamed Lake
Brown County, MinnesotaView mapDirections
Minnesota PCA publishes the water-quality measurements for Unnamed Lake. Here is what has been measured.
- Public access
- Limited data
Unnamed Lake in Brown County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 0.3 ft visibility. Chlorophyll-a (algae): 300 µg/L.
Unnamed Lake is a lake in Brown County, Minnesota. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2023-08-28. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Unnamed 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 Unnamed Lake
These are the measurements Minnesota PCA publishes for Unnamed Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 0.3 ft of visibility. Chlorophyll-a 300 µg/L. TSI 90.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 0.3ft | 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) | 300µg/L | Measured, not scored 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. | 90 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
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Fishing Unnamed Lake
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Unnamed Lake under Clean Water Act (NPDES) discharge permits.
- Franklin WwtpFranklin · 3.1 mi away · NPDES MN0021083
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Nearby Lakes in Brown County
Frequently asked questions about Unnamed Lake
Where is Unnamed Lake?
- Unnamed Lake is a lake in Brown County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Unnamed Lake?
- Unnamed Lake in Brown County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 0.3 ft visibility. Chlorophyll-a (algae): 300 µg/L.
Is Unnamed Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Can I fish at Unnamed Lake?
- Public access to Unnamed Lake is listed as yes on the lake record. 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.
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Where this data comes from
3 measurements from 1 monitoring station, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA3 samples · 2023
Analytical methods
- Field measurement/observation, generic method
- 10200 H ~ Chlorophyll a-b-c Determination
- 2120 B ~ Color in Water by Visual Comparison
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)