Unnamed Lake
Unnamed Lake in Brown County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 0.3 ft visibility. Chlorophyll-a (algae): 300 µg/L.
- Clarity
- 0.3 ft
- Public access
- Yes
Next lake in Brown County
Why Unnamed Lake has no grade
We grade a lake only when its monitoring record clears the evidence bar: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Unnamed Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity and algae (chlorophyll-a), but not phosphorus.
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by MPCA and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Unnamed Lake is a lake in Brown County, Minnesota. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2023-08-28. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Unnamed Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Very murky, less than 0.3 ft of visibility. Chlorophyll-a: 300 µg/L. Trophic State Index: 90.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.3 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | 300 µg/L | Not graded |
| Trophic State Index (TSI) | 90 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Unnamed Lake
Compare lakeside cabins, hotels, and vacation rentals near Unnamed Lake in Brown County, Minnesota — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Unnamed Lake
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Recreation & Access
- FranklinPublic
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.
Graded lakes near Unnamed Lake
Unnamed Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Brown County
Frequently asked questions about Unnamed Lake
What is the water quality grade for Unnamed Lake?
- Unnamed Lake in Brown County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 0.3 ft visibility. Chlorophyll-a (algae): 300 µg/L.
Is Unnamed Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Unnamed Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Algae concentration (chlorophyll-a) is 300 µg/L. Always check local health department advisories before swimming.
Are there boat ramps on Unnamed Lake?
- Unnamed Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Franklin. Public access is listed as yes.
Explore Unnamed Lake across LakeGrade
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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)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Named boat-access points from the USGS National Boat Ramps inventory