Sibley Lake is a mesotrophic lake in Sheridan County, Wyoming. Water quality is graded B based on 2 sampling years through 2019. Compared to the 5 other monitored lakes in Sheridan County, Sibley Lake ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, Wyoming DNR, last sampled 2019-09-10. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Moderate clarity, visible to about 9.2 ft. Phosphorus level: 20 µg/L. Trophic State Index: 46.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9.2 ft | C |
| Phosphorus | 20 µg/L | B |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Sibley Lake
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Fishing Sibley Lake
Location
County Ranking
Ranked #5 of 6 lakes in Sheridan County
Cleaner Lakes Within 30 Miles
Sibley Lake holds Grade B. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Sheridan County
Explore Sibley Lake across LakeGrade
More Wyoming Lake Rankings
Other Grade B Lakes in Wyoming
Mesotrophic 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: 2019-09-10
Monitoring stations: 1