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LakeQuality
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Mccraney Lake

Mahnomen County, MinnesotaMesotrophic

On the LakeGrade rubric, Mccraney Lake pulls an A: clarity at 12.1 ft and 19 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 sits in the mesotrophic zone — the band where most well-managed Minnesota lakes fall. 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 16 graded lakes in Mahnomen County, Mccraney Lake ranks 2 — in the top quartile locally.

No invasive species are currently listed at Mccraney Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Mccraney 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 2024-09-28. Grade methodology: LakeGrade methodology.

Swimming Safety

Excellent for swimming, crystal clear water with minimal algae

Water Quality Grade: A, Excellent

Good clarity, visible to about 12.1 ft. Phosphorus level: 19 µg/L. Trophic State Index: 44.

MetricValueGrade
Water Clarity (Secchi Depth)12.1 ftB
Phosphorus19 µg/LA
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)44Mesotrophic

Moderate nutrients, good water quality

Water Quality Trend: Declining

Based on 2 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Declining-0.217 m/yr2

Location

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County Ranking

Ranked #2 of 16 lakes in Mahnomen County

Nearby Lakes in Mahnomen County

State Parks Near Mccraney Lake

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2024-09-28

Monitoring stations: 3