Cutler Reservoir
Cache County, Utah5,460 acresView mapDirections
Nutrients and algae run above the regional average.
- Eutrophic
- Impaired · Nutrients (phosphorus, nitrogen)
- #9 of 9 in the county
Cutler Reservoir in Cache County, Utah has a water quality grade of D (Nutrient-rich). Water clarity: 1.2 ft visibility. Phosphorus: 109 µg/L. Chlorophyll-a (algae): 17.4 µg/L. Surface area: 5460 acres.
- Clarity
- 1.2 ft
- Area
- 5,460 acres
- Type
- Eutrophic
- Phosphorus
- 109 µg/L
- Chlorophyll-a
- 17.4 µg/L
- Trend
- → Stable
Stays via Stay22
Stays near Cutler Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Cutler Reservoir in Cache 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 Cutler Reservoir are listed below.
Top-rated places to stay near Cutler Reservoir
Prices for Sep 11–13, 4 adults. Change dates on the map below.
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Watch Cutler Reservoir’s letter
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Cutler Reservoir is a 5,460-acre productive, nutrient-rich eutrophic lake in Cache County, Utah. Water quality is graded D based on 2 sampling years through 2022. Phosphorus level is declining over recent sampling years. Compared to the 8 other monitored lakes in Cache County, Cutler Reservoir ranks #9 for water quality.
Source: EPA Water Quality Portal sampling records, Utah DWQ, last sampled 2022-07-26. Grade methodology: LakeQuality methodology.
What Cutler Reservoir is good for
From access and monitoring records, not editorial picks.
- Big water5,460 acres
Swimming Safety
Grade onlyAlgae risk
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. Cutler Reservoir is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Water Quality Grade: D (Nutrient-rich)
Very murky, less than 1.2 ft of visibility. Phosphorus 109 µg/L. Chlorophyll-a 17.4 µg/L. TSI 68. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.2 ft | Not graded |
| Phosphorus | 109 µg/L | Poor |
| Chlorophyll-a (Algae) | 17.4 µg/L | Poor |
| Trophic State Index (TSI) | 68 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 5,460 acres |
No bathymetric survey has been published for Cutler Reservoir, so its depth is not documented here.
Fishing Cutler Reservoir
Water Quality Trend: → Stable
Based on 9 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | -0.003 m/yr | 9 |
| Phosphorus | ↓ Declining | +10.25 µg/L/yr | 3 |
| Chlorophyll-a | ↑ Improving | -0.88 µg/L/yr | 5 |
Reservoir Info (USACE NID)
Cutler Reservoir is a man-made reservoir impounded by the Cutler (completed 1927), built primarily for irrigation on the Bear River; concrete-type dam, 126 ft tall and 550 ft long.
- Surface area
- 5,460 ac
- Normal storage
- 12,640 ac-ft
- Max storage
- 15,300 ac-ft
- Drainage area
- 6,267 sq mi
- Hazard class
- High
- Owner
- PacifiCorp
All listed purposes: Irrigation;Recreation;Hydroelectric.
Source: USACE National Inventory of Dams, NID ID UT00079 · Operator website
EPA Impairment Status
Cutler Reservoir is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit UT-L-16010202-002_00 · Official waterbody report
County Ranking
Ranked #9 of 9 lakes in Cache County
Nearby Lakes With Higher Grades
Cutler Reservoir holds Grade D. 2 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
See full comparison →Nearby Lakes in Cache County
Frequently asked questions about Cutler Reservoir
Where is Cutler Reservoir?
- Cutler Reservoir is a lake in Cache County, Utah. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Cutler Reservoir?
- Cutler Reservoir in Cache County, Utah has a water quality grade of D (Nutrient-rich). Water clarity: 1.2 ft visibility. Phosphorus: 109 µg/L. Chlorophyll-a (algae): 17.4 µg/L. Surface area: 5460 acres.
Is Cutler Reservoir safe to swim in?
- The D is nutrients and algae, not a swimming clearance. Cutler Reservoir is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Explore Cutler Reservoir across LakeQuality
4 thermal springs within 12.7 mi, nearest Cutler Warm 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
188 measurements from 2 monitoring stations, 2012–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Utah Department Of Environmental Quality
UTAHDWQ_WQX188 samples · 2012–2022
Analytical methods
- Field Measurements
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
Monitoring station identifiers (2)
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