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LakeQuality
A

Taylor Lake Deep

Cook County, MinnesotaMesotrophic

On the LakeGrade rubric, Taylor Lake Deep pulls an A: clarity at 10.6 ft and 13 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. Taylor Lake Deep ranks 30 of 128 in Cook County, putting it in the upper tier of locally monitored lakes.

Taylor Lake Deep has no invasive species recorded in Minnesota state databases as of 2022, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Taylor Lake Deep, which usually reflects a lack of formal fisheries survey work rather than an empty lake. Multiple sampling years from Minnesota PCA volunteers and partner agencies back the grade, so the letter should hold steady absent a major watershed shift.

Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2022-09-20. 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 10.6 ft. Phosphorus level: 13 µg/L. Chlorophyll-a: 3.5 µg/L. Trophic State Index: 42.

MetricValueGrade
Water Clarity (Secchi Depth)10.6 ftB
Phosphorus13 µg/LA
Chlorophyll-a (Algae)3.5 µg/LA
Trophic State Index (TSI)42Mesotrophic

Moderate nutrients, good water quality

Water Quality Trend: Stable

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

MetricTrendChange/YearYears
Water Clarity Declining-10.222 m/yr4
Phosphorus Improving-2.78 µg/L/yr4
Chlorophyll-a Stable-0.01 µg/L/yr4

Location

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County Ranking

Ranked #30 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: 2022-09-20

Monitoring stations: 2