Little Dell Reservoir is a cold, clear oligotrophic lake in Salt Lake County, Utah. Water quality is graded A based on 2 sampling years through 2024. Compared to the 9 other monitored lakes in Salt Lake County, Little Dell Reservoir ranks #8 for water quality.
Source: EPA Water Quality Portal sampling records, Utah DNR, last sampled 2024-09-16. 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 14.8 ft. Chlorophyll-a: 1.6 µg/L. Trophic State Index: 37.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 14.8 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 1.6 µg/L | A |
| Trophic State Index (TSI) | 37 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Little Dell Reservoir
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Fishing Little Dell Reservoir
Location
County Ranking
Ranked #8 of 10 lakes in Salt Lake County
Nearby Lakes in Salt Lake County
Explore Little Dell Reservoir across LakeGrade
More Utah Lake Rankings
Other Grade A Lakes in Utah
Morgan County · Clarity: 13.8 ft
Utah County · Clarity: 16.4 ft
Utah County · Clarity: 10.5 ft
Utah County · Clarity: 16.4 ft
Summit County · Clarity: 10.3 ft
Summit County · Clarity: 11.2 ft
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: 2024-09-16
Monitoring stations: 1