Redmond Lake
Sevier County, UtahView mapDirections
Nutrients and algae run above the regional average.
- Eutrophic
- #6 of 7 in the county
- 15 ft max depth
- Limited data
Redmond Lake in Sevier County, Utah has a water quality grade of D (Nutrient-rich). Water clarity: 0.7 ft visibility. Phosphorus: 98.5 µg/L. Chlorophyll-a (algae): 15.6 µg/L.
- Clarity
- 0.7 ft
- Max depth
- ~15 ft est.
- Type
- Eutrophic
- Phosphorus
- 98.5 µg/L
- Chlorophyll-a
- 15.6 µg/L
- Trend
- ↑ Improving
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Stays near Redmond Lake
Compare lakeside cabins, hotels, and vacation rentals near Redmond Lake in Sevier County, Utah — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Redmond Lake are listed below.
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Watch Redmond Lake’s letter
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Redmond Lake is a productive, nutrient-rich eutrophic lake in Sevier County, Utah with an estimated average depth of about 15 feet. Water quality is graded D based on 1 sampling years through 2020. Overall water quality is improving over recent sampling years. Compared to the 6 other monitored lakes in Sevier County, Redmond Lake ranks #6 for water quality.
Source: EPA Water Quality Portal sampling records, Utah DWQ, last sampled 2020-08-03. Grade methodology: LakeQuality methodology.
Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: D (Nutrient-rich)
Very murky, less than 0.7 ft of visibility. Phosphorus 98.5 µg/L. Chlorophyll-a 15.6 µg/L. TSI 70. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.7 ft | Not graded |
| Phosphorus | 98.5 µg/L | Not graded |
| Chlorophyll-a (Algae) | 15.6 µg/L | Poor |
| Trophic State Index (TSI) | 70 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~15 ft est. |
| Average Depth | ~11 ft est. |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Utah has not published bathymetry for Redmond Lake.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Fishing Redmond Lake
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.03 m/yr | 2 |
Reservoir Info (USACE NID)
Redmond Lake is a man-made reservoir impounded by the Redmond (completed 1875), built primarily for irrigation on the Springs; earth-type dam, 9 ft tall and 4,800 ft long.
- Normal storage
- 1,080 ac-ft
- Max storage
- 1,200 ac-ft
- Drainage area
- 999.9 sq mi
- Hazard class
- Significant
- Owner
- REDMOND IRRIGATION COMPANY
Source: USACE National Inventory of Dams, NID ID UT00360 · Operator website
County Ranking
Ranked #6 of 7 lakes in Sevier County
Nearby Lakes in Sevier County
Frequently asked questions about Redmond Lake
Where is Redmond Lake?
- Redmond Lake is a lake in Sevier County, Utah. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Redmond Lake?
- Redmond Lake in Sevier County, Utah has a water quality grade of D (Nutrient-rich). Water clarity: 0.7 ft visibility. Phosphorus: 98.5 µg/L. Chlorophyll-a (algae): 15.6 µg/L.
Is Redmond Lake safe to swim in?
- The D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
How deep is Redmond Lake?
- No published bathymetric survey covers Redmond Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 15 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Explore Redmond Lake across LakeQuality
2 thermal springs within 19.7 mi, nearest Salt Spring
Species activity outlook by water temperature and season
Where to stay at Utah's top lakes, each with its grade
High nutrients, frequent algae, reduced clarity
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Where this data comes from
11 measurements from 1 monitoring station, 2014–2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Utah Department Of Environmental Quality
UTAHDWQ_WQX11 samples · 2014–2020
Analytical methods
- Field Measurements
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
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
Lake size & watershed from HydroLAKES (HydroSHEDS)