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.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.2 ft | D |
| Phosphorus | 570 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 75 | Hypereutrophic |
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).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.225 m/yr | 3 |
| Phosphorus | ↑ Improving | -11.97 µg/L/yr | 4 |
Location
County Ranking
Ranked #50 of 64 lakes in Wright County
Nearby Lakes in Wright County
More Minnesota Lake Rankings
State Parks Near Swartout Lake
Other Grade D 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