Lake Powell Off Cha Canyon
San Juan County, UtahView mapDirections
Utah DWQ publishes the water-quality measurements for Lake Powell Off Cha Canyon. Here is what has been measured.
- Oligotrophic
Lake Powell Off Cha Canyon in San Juan County, Utah has water-quality measurements published by Utah DWQ, shown here as reported. Water clarity: 13.1 ft visibility. Phosphorus: 9.4 µg/L.
Lake Powell Off Cha Canyon is a cold, clear oligotrophic lake in San Juan County, Utah. Water clarity is improving over recent sampling years. Compared to the 9 other monitored lakes in San Juan County, Lake Powell Off Cha Canyon ranks #7 for water quality.
Source: EPA Water Quality Portal sampling records, Utah DWQ, last sampled 2025-06-24. Methodology: how these readings are compared.
What Lake Powell Off Cha Canyon is good for
From access and monitoring records, not editorial picks.
- Clear water13.1 ft of visibility
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 Lake Powell Off Cha Canyon 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 Lake Powell Off Cha Canyon
These are the measurements Utah DWQ publishes for Lake Powell Off Cha Canyon, 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 13.1 ft. Phosphorus 9.4 µg/L. TSI 38.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 13.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 9.4µg/L | Good GoodFairPoor |
| 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. | 38 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Lake Powell Off Cha Canyon
Answers come straight from the public measurements and survey records on this page.
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Stays near Lake Powell Off Cha Canyon
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Fishing Lake Powell Off Cha Canyon
Water Quality Trend: Stable
Based on 8 years of monitoring (2013–2025).
Water clarity
Improving8 years
Phosphorus
Worsening+1.02 µg/L/yr5 years
Nearby Lakes in San Juan County
Frequently asked questions about Lake Powell Off Cha Canyon
Where is Lake Powell Off Cha Canyon?
- Lake Powell Off Cha Canyon is a lake in San Juan County, Utah. Its water-quality measurements are published by Utah DWQ and shown on this page as reported.
What is the water quality of Lake Powell Off Cha Canyon?
- Lake Powell Off Cha Canyon in San Juan County, Utah has water-quality measurements published by Utah DWQ, shown here as reported. Water clarity: 13.1 ft visibility. Phosphorus: 9.4 µg/L.
Is Lake Powell Off Cha Canyon safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Lake Powell Off Cha Canyon across LakeQuality
More lakes in Utah
Other Lakes in Utah
Oligotrophic Lakes in Utah
Where this data comes from
228 measurements from 1 monitoring station, 2012–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Utah Department Of Environmental Quality
UTAHDWQ_WQX228 samples · 2012–2025
Analytical methods
- Field Measurements
- Phosphorus by Colorimetry
- Turbidiy determined in the field
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.