Gunnison Reservoir is a productive, nutrient-rich eutrophic lake in Sanpete County, Utah. Water quality is graded C based on 2 sampling years through 2020. Compared to the 12 other monitored lakes in Sanpete County, Gunnison Reservoir ranks #12 for water quality.
Source: EPA Water Quality Portal sampling records, Utah DNR, last sampled 2020-08-04. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Very murky, less than 0.8 ft of visibility. Chlorophyll-a: 8.2 µg/L. Trophic State Index: 66.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.8 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 8.2 µg/L | B |
| Trophic State Index (TSI) | 66 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Gunnison Reservoir
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Fishing Gunnison Reservoir
Location
County Ranking
Ranked #12 of 13 lakes in Sanpete County
Cleaner Lakes Within 30 Miles
Gunnison Reservoir holds Grade C. 5 nearby lakes hold higher grades.
- AFerron ReservoirSanpete County · 14.6 mi · Two grade letters higher (C → A)
- ANla LakeSanpete County · 14.3 mi · Two grade letters higher (C → A)
- BNine Mile ReservoirSanpete County · 2.4 mi · Higher grade (C → B)
- BPalisade LakeSanpete County · 2 mi · Higher grade (C → B)
- CNla LakeSanpete County · 2.2 mi · Higher overall water quality score
Nearby Lakes in Sanpete County
Explore Gunnison Reservoir across LakeGrade
More Utah Lake Rankings
Other Grade C Lakes in Utah
Eutrophic 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: 2020-08-04
Monitoring stations: 1