06-0422-00 Lake
Big Stone County, MinnesotaEutrophic
On the scoring rubric 06-0422-00 Lake grades a D: clarity at 2.6 ft and 43 µg/L of phosphorus keep it in the lower bracket for Big Stone County. The lake's weakest score is on Secchi depth — the water looks more turbid than its phosphorus number alone would predict.
At a TSI of 61, 06-0422-00 Lake reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. 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. 06-0422-00 Lake ranks 3 of 9 in Big Stone County — solidly in the upper half of the local distribution.
No invasive species are currently listed at 06-0422-00 Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for 06-0422-00 Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at 06-0422-00 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 2022-09-20. Grade methodology: LakeGrade methodology.
Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Very murky, less than 2.6 ft of visibility. Phosphorus level: 43 µg/L. Trophic State Index: 61.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.6 ft | F |
| Phosphorus | 43 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 61 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #3 of 9 lakes in Big Stone County
Nearby Lakes in Big Stone County
More Minnesota Lake Rankings
State Parks Near 06-0422-00 Lake
Other Grade D Lakes in Minnesota
Eutrophic Lakes in Minnesota
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2022-09-20
Monitoring stations: 1