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LakeQuality
F

Dutchman Lake Inlet 2

Cook County, MinnesotaLimited DataEutrophic

On the LakeGrade rubric Dutchman Lake Inlet 2 fails the cutoffs — a TSI of 67 and persistent algal pressure put it in the bottom tier. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.

At a TSI of 67, Dutchman Lake Inlet 2 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 the 128 graded lakes of Cook County, Dutchman Lake Inlet 2 sits at rank 115, near the bottom of the county list.

Dutchman Lake Inlet 2 has no invasive species recorded in Minnesota state databases as of 2023, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Dutchman Lake Inlet 2, 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 2023-08-15. Grade methodology: LakeGrade methodology.

Swimming Safety

Avoid swimming, very poor water quality, potential algae toxins

Water Quality Grade: F, Very Poor

Very murky, less than 2 ft of visibility. Trophic State Index: 67.

MetricValueGrade
Water Clarity (Secchi Depth)2 ftF
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)67Eutrophic

High nutrients, frequent algae, reduced clarity

Water Quality Trend: Improving

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

MetricTrendChange/YearYears
Water Clarity Declining-4.195 m/yr4
Phosphorus Improving-3.9 µg/L/yr4
Chlorophyll-a Improving-0.63 µg/L/yr4

Location

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County Ranking

Ranked #115 of 128 lakes in Cook County

Nearby Lakes in Cook County

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2023-08-15

Monitoring stations: 1