San Juan County Lake Quality
Utah, 8 lakes, measured by Utah DWQ
San Juan County holds 8 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. 4 of those lakes carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. Most monitored lakes in San Juan County carry favourable nutrient and algae readings for Utah.
The county's lakes lean shallow, which makes the readings sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest measured lake is Recapture Reservoir.
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Quick Answers for San Juan County
Planning a trip? Check special fishing regulations for Recapture Reservoir — or check the official Utah fishing regulations.
All Lakes in San Juan County
8 lakes · 4 ranked on readings, 4 without enough sampling4 lakes ranked on readings · 4 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|
| 1 | Recapture ReservoirSan Juan | 8.9 ft | 15.1 µg/L | 1.7 µg/L | No recent samples | Not recorded |
| 2 | Lake Powell Off Cha CanyonSan Juan | 13.1 ft | 9.4 µg/L | No recent samples | No recent samples | Not recorded |
| 3 | Dark Canyon LakeSan Juan | 7.2 ft | 24.2 µg/L | 3.2 µg/L | No recent samples | Not recorded |
| 4 | Lake Powell Hite MidchannelSan Juan | 1.3 ft | 138 µg/L | No recent samples | No recent samples | ✓ Public |
| Lake Powell Mid Channel Midway Between Trachyte Creek And Twomile CanyonSan Juan | 0.2 ft | 906 µg/L | No recent samples | No recent samples | Not recorded | |
| TexasGulf Potash Pond Three ASan Juan | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| TexasGulf Potash Pond Three BSan Juan | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| Dugout ReservoirSan Juan | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded |
NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.
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Source: the Utah Division of Water Quality. See data sources.