Settlement Canyon Reservoir
Tooele County, UtahView mapDirections
Utah DWQ publishes the water-quality measurements for Settlement Canyon Reservoir. Here is what has been measured.
- Oligotrophic
- Limited data
Settlement Canyon Reservoir in Tooele County, Utah has water-quality measurements published by Utah DWQ, shown here as reported. Water clarity: 8.5 ft visibility. Phosphorus: 8.9 µg/L. Chlorophyll-a (algae): 1.6 µg/L.
Settlement Canyon Reservoir is a cold, clear oligotrophic lake in Tooele County, Utah. Water clarity is improving over recent sampling years. Compared to the 3 other monitored lakes in Tooele County, Settlement Canyon Reservoir ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Utah DWQ, last sampled 2024-09-03. Methodology: how these readings are compared.
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Swimming conditions
Readings onlyLimited data
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 Settlement Canyon 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 Settlement Canyon Reservoir
These are the measurements Utah DWQ publishes for Settlement Canyon Reservoir, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 8.5 ft. Phosphorus 8.9 µg/L. Chlorophyll-a 1.6 µg/L. TSI 39.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 8.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 8.9µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 1.6µg/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. | 39 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Settlement Canyon Reservoir
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Fishing Settlement Canyon Reservoir
Water quality readings over time
3 seasons of samples on record (2012–2024). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Improving3 years
Chlorophyll-a
Worsening+0.14 µg/L/yr2 years
Reservoir Info (USACE NID)
Settlement Canyon Reservoir is a man-made reservoir impounded by the Settlement Canyon (completed 1966), built primarily for irrigation on the Settlement Creek; earth-type dam, 118 ft tall and 960 ft long.
- Normal storage
- 1,168 ac-ft
- Max storage
- 1,432 ac-ft
- Drainage area
- 17 sq mi
- Hazard class
- High
- Owner
- SETTLEMENT CANYON IRRIGATION COMPANY
Source: USACE National Inventory of Dams, NID ID UT00270 · Operator website
Nearby Lakes in Tooele County
Frequently asked questions about Settlement Canyon Reservoir
Where is Settlement Canyon Reservoir?
- Settlement Canyon Reservoir is a lake in Tooele County, Utah. Its water-quality measurements are published by Utah DWQ and shown on this page as reported.
What is the water quality of Settlement Canyon Reservoir?
- Settlement Canyon Reservoir in Tooele County, Utah has water-quality measurements published by Utah DWQ, shown here as reported. Water clarity: 8.5 ft visibility. Phosphorus: 8.9 µg/L. Chlorophyll-a (algae): 1.6 µg/L.
Is Settlement Canyon Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
35 measurements from 1 monitoring station, 2012–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Utah Department Of Environmental Quality
UTAHDWQ_WQX35 samples · 2012–2024
Analytical methods
- Field Measurements
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
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.