Lake Canyon Lake
Duchesne County, UtahView mapDirections
Not Rated: one monitoring station are on record, but they measured water clarity only. LakeQuality’s A–F method grades total phosphorus, total nitrogen, chlorophyll-a, and turbidity; clarity is shown, not scored.
- Impaired · Metals (other than mercury)
- Limited data
Lake Canyon Lake in Duchesne County, Utah is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 5.7 ft visibility.
- Clarity
- 5.7 ft
- Trend
- ↑ Improving
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Stays near Lake Canyon Lake
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Watch Lake Canyon Lake’s letter
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Why Lake Canyon Lake has no grade
Lake Canyon Lake has monitoring on record from one station, but only water clarity was measured. LakeQuality’s A–F letter uses total phosphorus, total nitrogen, chlorophyll-a, and turbidity against EPA National Lakes Assessment condition classes. With none of those grading measurements on record, Lake Canyon Lake is Not Rated — not an F. Its 5.7-foot median from 56 readings collected 2013–2017 is still shown as clarity, but clarity alone cannot earn a letter.
Not Rated is EPA Integrated Reporting Category 3 — insufficient information. Everything below that has been measured is still reported on this page.
Sampling is run by Utah DWQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lake Canyon Lake is a lake in Duchesne County, Utah. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, Utah DWQ, last sampled 2017-07-07. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Lake Canyon Lake is listed impaired under Clean Water Act §303(d) (IR 5) for metals (other than mercury), pH / acidity, salinity / chlorides, toxic inorganics. Check local advisories before you swim.
Water quality measurements for Lake Canyon Lake
These readings exist but are not enough for an A–F grade — see why.
Murky, only visible to about 5.7 ft. TSI 52.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.7 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 52 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Fishing Lake Canyon Lake
Water Quality Trend: ↑ Improving
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.725 m/yr | 4 |
EPA Impairment Status
Lake Canyon Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit UT-L-14060004-004_00 · Official waterbody report
Graded lakes near Lake Canyon Lake
Lake Canyon Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Duchesne County
Frequently asked questions about Lake Canyon Lake
Where is Lake Canyon Lake?
- Lake Canyon Lake is a lake in Duchesne County, Utah. LakeQuality has not rated this lake (UNRATED) — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity.
What is the water quality grade for Lake Canyon Lake?
- Lake Canyon Lake in Duchesne County, Utah is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 5.7 ft visibility.
Is Lake Canyon Lake safe to swim in?
- The letter is not a swimming clearance. Lake Canyon Lake is listed impaired under Clean Water Act §303(d) (IR 5) for metals (other than mercury), pH / acidity, salinity / chlorides, toxic inorganics. Check local advisories before you swim.
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Where this data comes from
56 measurements from 1 monitoring station, 2013–2017. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Utah Department Of Environmental Quality
UTAHDWQ_WQX56 samples · 2013–2017
Analytical methods
- Field Measurements
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database