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LakeQuality
A

Seq044a Lake

Lake County, MinnesotaLimited DataOligotrophic

Seq044a Lake earns an A — water clarity, phosphorus, and chlorophyll-a all rate among the best monitored waters in Lake County. 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.

The lake's low TSI puts it in oligotrophic territory — the cleanest of the four trophic classes, but also the most vulnerable to nutrient-driven shifts. 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. Seq044a Lake ranks 31 of 142 in Lake County, putting it in the upper tier of locally monitored lakes.

Zebra mussel presence at Seq044a Lake means the lake's clarity numbers carry an asterisk — filtered water is not the same as nutrient-poor water. The state fisheries records do not list documented species for Seq044a Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. A documented public access point at Seq044a 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 2021-04-18. Grade methodology: LakeGrade methodology.

Swimming Safety

Excellent for swimming, crystal clear water with minimal algae

Water Quality Grade: A, Excellent

No clarity data. Chlorophyll-a: 0.8 µg/L. Trophic State Index: 28.

MetricValueGrade
Water Clarity (Secchi Depth)No data
PhosphorusNo data
Chlorophyll-a (Algae)0.8 µg/LA
Trophic State Index (TSI)28Oligotrophic

Low nutrients, clear water, excellent for swimming

Invasive Species

Eurasian watermilfoilNew Zealand mud snailVHSfaucet snailround gobyruffespiny waterfleawhite perchzebra mussel

Location

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County Ranking

Ranked #31 of 142 lakes in Lake County

Nearby Lakes in Lake County

DNR Reports & Resources

Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Seq044a Lake. 2 reports on file.

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2021-04-18

Monitoring stations: 1