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.
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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.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 51 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.169 m/yr | 5 |
Ice Season
Historical ice data from Minnesota DNR (8 observations).
Estimated open water season: 222 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2020-04-08 (2020) | 2022-04-22 (2022) |
| Ice-In | 2022-10-30 (2022) | 2017-12-12 (2017) |
Most recent ice-out: 2022-04-22
Location
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
More Minnesota Lake Rankings
State Parks Near Bear Lake
Other Grade D Lakes in Minnesota
Eutrophic Lakes in Minnesota
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