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F

Schmitt Lake

Dakota County, MinnesotaLimited DataEutrophic

On the LakeGrade rubric Schmitt Lake fails the cutoffs — a TSI of 60 and persistent algal pressure put it in the bottom tier.

Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. 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 36 graded lakes of Dakota County, Schmitt Lake sits at rank 33, near the bottom of the county list.

Schmitt Lake has no invasive species recorded in Minnesota state databases as of 2021, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Schmitt 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 2021-05-03. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

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Swimming Safety

Avoid swimming, very poor water quality, potential algae toxins

Water Quality Grade: F, Very Poor

Very murky, less than 3.3 ft of visibility. Trophic State Index: 60.

MetricValueGrade
Water Clarity (Secchi Depth)3.3 ftF
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)60Eutrophic

High nutrients, frequent algae, reduced clarity

Location

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County Ranking

Ranked #33 of 36 lakes in Dakota County

Cleaner Lakes Within 30 Miles

Schmitt Lake holds Grade F. 4 nearby lakes hold higher grades.

Nearby Lakes in Dakota County

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2021-05-03

Monitoring stations: 1