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LakeQuality
A

Dickens Lake

Beltrami County, MinnesotaOligotrophic

On the LakeGrade rubric, Dickens Lake pulls an A: clarity at 36.1 ft and 15 µg/L of phosphorus put it in the top bracket for Minnesota. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

The lake's low TSI puts it in oligotrophic territory — the cleanest of the four trophic classes, but also the most vulnerable to nutrient-driven shifts. 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. Among the 86 graded lakes in Beltrami County, Dickens Lake ranks 21 — in the top quartile locally.

No invasive species are currently listed at Dickens Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Dickens Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. 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 2025-09-25. Grade methodology: LakeGrade methodology.

Swimming Safety

Excellent for swimming, crystal clear water with minimal algae

Water Quality Grade: A, Excellent

Crystal clear, you can see 36.1 ft down. Phosphorus level: 15 µg/L. Trophic State Index: 34.

MetricValueGrade
Water Clarity (Secchi Depth)36.1 ftA
Phosphorus15 µg/LA
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)34Oligotrophic

Low nutrients, clear water, excellent for swimming

Water Quality Trend: Improving

Based on 6 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+0.347 m/yr6
Phosphorus Improving-0.87 µg/L/yr6

Location

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County Ranking

Ranked #21 of 86 lakes in Beltrami County

Nearby Lakes in Beltrami County

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2025-09-25

Monitoring stations: 1