Flaming Gorge Reservoir
Daggett County, UtahView mapDirections
Utah DWQ publishes the water-quality measurements for Flaming Gorge Reservoir. Here is what has been measured.
- Oligotrophic
Flaming Gorge Reservoir in Daggett County, Utah has water-quality measurements published by Utah DWQ, shown here as reported. Water clarity: 31.8 ft visibility. Phosphorus: 6.8 µg/L. Chlorophyll-a (algae): 1 µg/L.
Flaming Gorge Reservoir is a cold, clear oligotrophic lake in Daggett County, Utah. Overall water quality is declining over recent sampling years. Compared to the 6 other monitored lakes in Daggett County, Flaming Gorge Reservoir ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, Utah DWQ, last sampled 2025-07-10. Methodology: how these readings are compared.
What Flaming Gorge Reservoir is good for
From access and monitoring records, not editorial picks.
- Clear water31.8 ft of visibility
- Camping1 public campground nearby
Swimming conditions
Readings onlyLow algae
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Flaming Gorge Reservoir 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 Flaming Gorge Reservoir
These are the measurements Utah DWQ publishes for Flaming Gorge Reservoir, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Crystal clear, you can see 31.8 ft down. Phosphorus 6.8 µg/L. Chlorophyll-a 1 µg/L. TSI 30.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 31.8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 6.8µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 1µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 30 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Flaming Gorge Reservoir
Answers come straight from the public measurements and survey records on this page.
Recreation & Access
Public campgrounds near Flaming Gorge Reservoir
- Kingfisher Island1.3 km
Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes
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Stays near Flaming Gorge Reservoir
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Fishing Flaming Gorge Reservoir
Water Quality Trend: Worsening
Based on 10 years of monitoring (2012–2025).
Water clarity
Stable10 years
Phosphorus
Worsening+8.4 µg/L/yr2 years
Chlorophyll-a
Worsening+0.05 µg/L/yr4 years
Nearby Lakes in Daggett County
Frequently asked questions about Flaming Gorge Reservoir
Where is Flaming Gorge Reservoir?
- Flaming Gorge Reservoir is a lake in Daggett County, Utah. Its water-quality measurements are published by Utah DWQ and shown on this page as reported.
What is the water quality of Flaming Gorge Reservoir?
- Flaming Gorge Reservoir in Daggett County, Utah has water-quality measurements published by Utah DWQ, shown here as reported. Water clarity: 31.8 ft visibility. Phosphorus: 6.8 µg/L. Chlorophyll-a (algae): 1 µg/L.
Is Flaming Gorge Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there campgrounds on Flaming Gorge Reservoir?
- Flaming Gorge Reservoir has 1 public campground from USGS The National Map within 5 km, including Kingfisher Island. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.
Explore Flaming Gorge Reservoir across LakeQuality
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Other Lakes in Utah
Oligotrophic Lakes in Utah
Where this data comes from
214 measurements from 4 monitoring stations, 2012–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Utah Department Of Environmental Quality
UTAHDWQ_WQX214 samples · 2012–2025
Analytical methods
- Field Measurements
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
- Turbidiy determined in the field
Monitoring station identifiers (4)
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.
Other records on this page
Public campgrounds from USGS The National Map Structures, within about 3 miles