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D

Mccormic Lake

Stearns County, MinnesotaLimited DataEutrophic

Mccormic Lake pulls a D on the LakeGrade rubric — phosphorus loading and limited clarity hold it below the Minnesota average.

A TSI in the eutrophic range signals a lake doing what nutrient-loaded waters do — supporting an active algal community at the cost of clear water. 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. Mccormic Lake ranks 45 of 55 in Stearns County — at the lower end of the locally monitored distribution.

Mccormic Lake 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 Mccormic Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. A documented public access point at Mccormic Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. 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 2022-09-29. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

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Swimming Safety

Swimming not recommended, poor water quality with high algae risk

Water Quality Grade: D, Poor

No clarity data. Phosphorus level: 67 µg/L. Trophic State Index: 65.

MetricValueGrade
Water Clarity (Secchi Depth)No data
Phosphorus67 µg/LD
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)65Eutrophic

High nutrients, frequent algae, reduced clarity

Location

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County Ranking

Ranked #45 of 55 lakes in Stearns County

Cleaner Lakes Within 30 Miles

Mccormic Lake holds Grade D. 4 nearby lakes hold higher grades.

Nearby Lakes in Stearns County

DNR Reports & Resources

Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Mccormic Lake. 2 reports on file.

EPA Impairment Status

Mccormic Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).

Causes of impairment

Nutrients (phosphorus, nitrogen)

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit MN73-0273-00 · Official waterbody report

Data Sources

Water quality data from the EPA Water Quality Portal

Impairment status from EPA ATTAINS 303(d) database

Grading methodology based on Metropolitan Council standards

Most recent sample: 2022-09-29

Monitoring stations: 1