Unnamed Reservoir is a productive, nutrient-rich eutrophic lake in Big Horn County, Wyoming. Water quality is graded F based on 1 sampling years through 2016. Compared to the 9 other monitored lakes in Big Horn County, Unnamed Reservoir ranks #9 for water quality.
Source: EPA Water Quality Portal sampling records, Wyoming DNR, last sampled 2016-09-20. Grade methodology: LakeGrade methodology.
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Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
No clarity data. Phosphorus level: 90 µg/L. Trophic State Index: 69.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 90 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 69 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Unnamed Reservoir
Location
County Ranking
Ranked #9 of 10 lakes in Big Horn County
Nearby Lakes in Big Horn County
Explore Unnamed Reservoir across LakeGrade
More Wyoming Lake Rankings
Other Grade F 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: 2016-09-20
Monitoring stations: 1