Great Salt Lake
Box Elder County, UtahView mapDirections
Utah DWQ publishes the water-quality measurements for Great Salt Lake. Here is what has been measured.
- Limited data
Great Salt Lake in Box Elder County, Utah has water-quality measurements published by Utah DWQ, shown here as reported. Water clarity: 10.5 ft visibility.
Great Salt Lake is a lake in Box Elder County, Utah.
Source: EPA Water Quality Portal sampling records, Utah DWQ, last sampled 2020-07-06. Methodology: how these readings are compared.
What Great Salt Lake is good for
From access and monitoring records, not editorial picks.
- Clear water10.5 ft of visibility
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Great Salt Lake is safe to swim in today is a call for the Utah Division of Water Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Great Salt Lake
These are the measurements Utah DWQ publishes for Great Salt Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 10.5 ft. TSI 43.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 10.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 43 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
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Answers come straight from the public measurements and survey records on this page.
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Fishing Great Salt Lake
Nearby Lakes in Box Elder County
Frequently asked questions about Great Salt Lake
Where is Great Salt Lake?
- Great Salt Lake is a lake in Box Elder County, Utah. Its water-quality measurements are published by Utah DWQ and shown on this page as reported.
What is the water quality of Great Salt Lake?
- Great Salt Lake in Box Elder County, Utah has water-quality measurements published by Utah DWQ, shown here as reported. Water clarity: 10.5 ft visibility.
Is Great Salt Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Great Salt Lake across LakeQuality
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Where this data comes from
1 measurement from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North American Lake Management Society
NALMS1 sample · 2020
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.