Anne Lake
St. Louis County, Minnesota8 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Anne Lake. Here is what has been measured.
- 27 ft max depth
- Public access
- Limited data
Anne Lake in St. Louis County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 14.4 ft visibility. Phosphorus: 9 µg/L. Chlorophyll-a (algae): 3.6 µg/L. Maximum depth: 27 ft. Surface area: 8.35 acres.
Minnesota DNR's Standard Survey on August 14, 2001 caught 5.00 northern pike per gill net at Anne Lake. Length samples in the latest survey that recorded them ran 10–23 inches. DNR survey details →
Anne Lake is a 8-acre lake in St. Louis County, Minnesota with a maximum depth of 27 feet. The lake supports 5 documented fish species including black crappie, bluegill, and largemouth bass. Public access is available.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2022-08-04. Methodology: how these readings are compared.
What Anne Lake is good for
From access and monitoring records, not editorial picks.
- Clear water14.4 ft of visibility
- Fishing5 species recorded
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Anne 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 Anne Lake
These are the measurements Minnesota PCA publishes for Anne Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 14.4 ft. Phosphorus 9 µg/L. Chlorophyll-a 3.6 µg/L. TSI 39.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 14.4ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 9µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 3.6µg/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. | 39 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Anne Lake
Answers come straight from the public measurements and survey records on this page.
Minnesota DNR's Standard Survey on August 14, 2001 caught 5.00 northern pike per gill net at Anne Lake. Length samples in the latest survey that recorded them ran 10–23 inches.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Anne Lake’s water-quality measurements separately, and the water-quality trend over 5 years of monitoring is stable. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
2 surveys on file from MN DNR Fisheries. Most recent: 2001-08-14 (Standard Survey).
2 surveys on file · most recent 2001-08-14 (Standard Survey)
25 years old| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Black Crappie | 10.63 | 3–8 in 2001-08-14 | 0.12 lb |
| Bluegill | 7.81 | 5–7 in 2001-08-14 | 0.17 lb |
| Northern Pike | 7.50 | 10–23 in 2001-08-14 | 2.54 lb |
| Yellow Perch | 3.00 | 6 in 2001-08-14 | 0.11 lb |
| Largemouth Bass | 1.03 | 5–8 in 2001-08-14 | 0.2 lb |
| Rock Bass | 0.33 | 0.3 lb |
CPUE = catch per unit effort, fish caught per net per set in a standardised survey. It measures abundance, not size, and is not a weekly bite report.
Length Distributions
Number of fish caught at each inch class in the most recent survey that recorded lengths. Red dashed line marks an approximate trophy threshold for that species.
Black Crappie
Bluegill
Northern Pike
Yellow Perch
From the 2001-08-14 survey
Anne Lake is located 7 miles northeast of Cotton, Minnesota. Anne Lake is 8 acres in area, has a maximum depth of 27 feet, and is in lake class 13. Access to the lake is off County Road 224 right-of-way, which separates Anne Lake from Wilson Lake. Anne Lake was sampled in 2001 to update information on fish population…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Anne Lake. 2 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — AnneFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Anne (1870)Aquatic Plant Report · MN DNR LakeFinder
Lake Details
Max depth
27 ft
Surface area
8 acres
Shoreline
0.5 mi
Littoral zone
84%
Share shallower than 15 ft
Public access
Yes
Listed by Minnesota PCA
Lake Size & Watershed
Watershed (drainage) area
0 sq mi
HydroLAKES / HydroSHEDS
Elevation
1,375 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Stays via Stay22
Stays near Anne Lake
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Fish Species
Click a species to see every lake where it is documented.
Fishing Anne Lake
Water Quality Trend: Stable
Based on 5 years of monitoring (2020–2025).
Water clarity
Stable5 years
Nearby Lakes in St. Louis County
Frequently asked questions about Anne Lake
Where is Anne Lake?
- Anne Lake is a lake in St. Louis County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Anne Lake?
- Anne Lake in St. Louis County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 14.4 ft visibility. Phosphorus: 9 µg/L. Chlorophyll-a (algae): 3.6 µg/L. Maximum depth: 27 ft. Surface area: 8.35 acres.
Is Anne Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Anne Lake?
- Anne Lake has a maximum depth of 27 feet. The lake covers 8.35 acres.
What fish are in Anne Lake?
- Fish species found in Anne Lake include black crappie, bluegill, largemouth bass, northern pike, yellow perch. Anne Lake is located in St. Louis County, Minnesota.
What did the DNR fisheries survey find at Anne Lake?
- Minnesota DNR's Standard Survey on August 14, 2001 caught 5.00 northern pike per gill net at Anne Lake. Length samples in the latest survey that recorded them ran 10–23 inches. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Anne Lake’s water-quality measurements separately, and the water-quality trend over 5 years of monitoring is stable. Catch rate is not a swim clearance and is not a weekly bite report.
Can I fish at Anne Lake?
- Public access to Anne 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
5 measurements from 1 monitoring station, 2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA5 samples · 2022
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
- 2130 B ~ Nephelometric Method
- 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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder