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B

Beartrack Lake

St. Louis County, MinnesotaLimited DataMesotrophic

Beartrack Lake comes in at a B on the grading rubric — a respectable showing for a Minnesota lake of its size and depth.

The lake sits in the mesotrophic zone — the band where most well-managed Minnesota lakes fall. At 55 ft of maximum depth, Beartrack Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. At 156 acres, Beartrack Lake fits the Minnesota median for monitored lakes, with 2.8 miles of shoreline. Beartrack Lake ranks 70 of 187 in St. Louis County — solidly in the upper half of the local distribution.

No invasive species are currently listed at Beartrack Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Beartrack Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Beartrack Lake — most use is by shoreline residents and their guests. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.

Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2022-07-02. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

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Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Good clarity, visible to about 11 ft. Trophic State Index: 43.

MetricValueGrade
Water Clarity (Secchi Depth)11 ftB
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)43Mesotrophic

Moderate nutrients, good water quality

Lake Details

CharacteristicValue
Maximum Depth55 ft
Average Depth25.3 ft
Surface Area156.49 acres
Shoreline Length2.8 mi
Littoral Zone27%
Public AccessNo

Location

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County Ranking

Ranked #70 of 187 lakes in St. Louis County

Nearby Lakes in St. Louis County

DNR Fisheries Survey Summary

2 surveys on file from MN DNR Fisheries. Most recent: 2016-08-17 (Targeted Survey).

Top Species by Catch Rate

SpeciesAvg CPUEAvg Weight
White Sucker13.330.88 lb
Green Sunfish1.330.09 lb
Yellow Perch1.170.21 lb

CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE = more abundant in standardized sampling.

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.

White Sucker

80 fish · 718 in · 2000-07-10
1790789101112131415161718

Green Sunfish

8 fish · 45 in · 2000-07-10
53045

Yellow Perch

7 fish · 510 in · 2000-07-10
2105678910

From the 2016-08-17 survey

Dissolved oxygen and temperature were sampled in Beartrack Lake on August 17, 2016. This data was collected as part of an assessment of Lake Trout habitat suitability during the peak of the summer. This sample showed that optimum habitat conditions for Lake Trout existed from 23 to 36 feet in depth. Over 1/4 of the…

Source: MN DNR LakeFinder Fisheries Lake Survey

DNR Reports & Resources

Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Beartrack Lake. 1 report on file.

EPA Impairment Status

Beartrack Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Mercury

Source: EPA ATTAINS assessment unit MN69-0473-00 · Official waterbody report · Matched by proximity (1.48 km)

Data Sources

Water quality data from the EPA Water Quality Portal

Impairment status from EPA ATTAINS 303(d) database

Grading methodology based on Metropolitan Council standards

Lake details from Minnesota DNR LakeFinder

Most recent sample: 2022-07-02

Monitoring stations: 1