Bighorn Lake is a productive, nutrient-rich eutrophic lake in Big Horn County, Wyoming. Water quality is graded C based on 2 sampling years through 2019. Compared to the 9 other monitored lakes in Big Horn County, Bighorn Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, Wyoming DNR, last sampled 2019-08-13. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swim with caution, moderate algae may be present
Water Quality Grade: C, Fair
No clarity data. Phosphorus level: 64.5 µg/L. Chlorophyll-a: 18.6 µg/L. Trophic State Index: 62.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 64.5 µg/L | D |
| Chlorophyll-a (Algae) | 18.6 µg/L | C |
| Trophic State Index (TSI) | 62 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Bighorn Lake
Location
County Ranking
Ranked #4 of 10 lakes in Big Horn County
Nearby Lakes in Big Horn County
Explore Bighorn Lake across LakeGrade
More Wyoming Lake Rankings
Other Grade C Lakes in Wyoming
Eutrophic Lakes in Wyoming
More records, surveys & data sources
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2019-08-13
Monitoring stations: 10