Forsyth Reservoir is a cold, clear oligotrophic lake in Sevier County, Utah. Water quality is graded A based on 2 sampling years through 2019. Compared to the 12 other monitored lakes in Sevier County, Forsyth Reservoir ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, Utah DNR, last sampled 2019-08-27. Grade methodology: LakeGrade methodology.
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Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Good clarity, visible to about 13.8 ft. Chlorophyll-a: 1.4 µg/L. Trophic State Index: 37.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 13.8 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 1.4 µg/L | A |
| Trophic State Index (TSI) | 37 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Forsyth Reservoir
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Fishing Forsyth Reservoir
Location
County Ranking
Ranked #5 of 13 lakes in Sevier County
Nearby Lakes in Sevier County
Explore Forsyth Reservoir across LakeGrade
More Utah Lake Rankings
Other Grade A Lakes in Utah
Oligotrophic Lakes in Utah
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: 2019-08-27
Monitoring stations: 1