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LakeQuality
D

Swartout Lake

Wright County, MinnesotaHypereutrophic

Swartout Lake earns a D — measurements through 2024 show persistent nutrient pressure that limits clarity through the summer. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

A TSI above 70 puts Swartout Lake in hypereutrophic territory: visible blooms are common, and clarity rarely climbs even in early summer. 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. Swartout Lake ranks 50 of 64 in Wright County — at the lower end of the locally monitored distribution.

No invasive species are currently listed at Swartout Lake — the lake remains off the Minnesota infested-waters roster. The lake's fish records list 3 species — a varied community without one dominant gamefish. No formal public access is documented at Swartout Lake — most use is by shoreline residents and their guests. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.

Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-07-30. Grade methodology: LakeGrade methodology.

Swimming Safety

Swimming not recommended, poor water quality with high algae risk

Water Quality Grade: D, Poor

Murky, only visible to about 5.2 ft. Phosphorus level: 570 µg/L. Trophic State Index: 75.

MetricValueGrade
Water Clarity (Secchi Depth)5.2 ftD
Phosphorus570 µg/LF
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)75Hypereutrophic

Very high nutrients, dense algae, poor clarity

Fish Species

Click a species to see all Minnesota and Wisconsin lakes where it is found.

→ Best fishing times for Swartout Lake (14-day solunar calendar)

→ Is it safe to eat fish from Swartout Lake? (mercury & PFAS guide)

Swartout Lake fishing regulations (limits, seasons, special rules)

Water Quality Trend: Stable

Based on 4 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Declining-0.225 m/yr3
Phosphorus Improving-11.97 µg/L/yr4

Location

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County Ranking

Ranked #50 of 64 lakes in Wright County

Nearby Lakes in Wright County

Hypereutrophic Lakes in Minnesota

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2024-07-30

Monitoring stations: 1