West Thumb Lake is a cold, clear oligotrophic lake in Teton County, Wyoming. Water quality is graded A based on 1 sampling years through 2013. Compared to the 16 other monitored lakes in Teton County, West Thumb Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Wyoming DNR, last sampled 2013-09-09. Grade methodology: LakeGrade methodology.
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Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 31.2 ft down. Trophic State Index: 28.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 31.2 ft | A |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 28 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near West Thumb Lake
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Fishing West Thumb Lake
Location
County Ranking
Ranked #1 of 17 lakes in Teton County
Nearby Lakes in Teton County
Explore West Thumb Lake across LakeGrade
More Wyoming Lake Rankings
Other Grade A Lakes in Wyoming
Oligotrophic 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: 2013-09-09
Monitoring stations: 1