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D

Bear Lake

Stearns County, MinnesotaLimited DataEutrophic

On the scoring rubric Bear Lake grades a D: clarity at 6.0 ft and phosphorus readings still being added keep it in the lower bracket for Stearns County.

At a TSI of 51, Bear Lake reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake's surface area is not consistently recorded across state datasets — physical context remains partial. Within Stearns County's 55 graded lakes, Bear Lake ranks 37 — below the local median, though not at the bottom.

No invasive species are currently listed at Bear Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Bear Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. The lake lacks a documented public access point, so visitor use is limited. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.

Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-08-15. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

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Swimming Safety

Swimming not recommended, poor water quality with high algae risk

Water Quality Grade: D, Poor

Murky, only visible to about 6 ft. Trophic State Index: 51.

MetricValueGrade
Water Clarity (Secchi Depth)6 ftD
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)51Eutrophic

High nutrients, frequent algae, reduced clarity

Water Quality Trend: Improving

Based on 5 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+0.169 m/yr5
See year-by-year chart →

Ice Season

Historical ice data from Minnesota DNR (8 observations).

Typical Ice-Out
Apr 12
Typical Ice-In
Nov 20

Estimated open water season: 222 days

EarliestLatest
Ice-Out2020-04-08 (2020)2022-04-22 (2022)
Ice-In2022-10-30 (2022)2017-12-12 (2017)

Most recent ice-out: 2022-04-22

Location

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County Ranking

Ranked #37 of 55 lakes in Stearns County

Cleaner Lakes Within 30 Miles

Bear Lake holds Grade D. 2 nearby lakes hold higher grades.

Nearby Lakes in Stearns County

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Ice data from Minnesota DNR Climate

Most recent sample: 2024-08-15

Monitoring stations: 1