Rollins Reservoir
Uinta County, Wyoming200 acresView mapDirections
Wyoming DEQ publishes the water-quality measurements for Rollins Reservoir. Here is what has been measured.
- 14 ft max depth
- Limited data
Rollins Reservoir in Uinta County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 6.2 ft visibility. Phosphorus: 20.8 µg/L. Surface area: 200 acres.
Rollins Reservoir is a 200-acre lake in Uinta County, Wyoming with an estimated average depth of about 14 feet.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2013-09-11. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Rollins Reservoir is safe to swim in today is a call for the Wyoming Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Rollins Reservoir
These are the measurements Wyoming DEQ publishes for Rollins Reservoir, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 6.2 ft. Phosphorus 20.8 µg/L. TSI 49.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 6.2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 20.8µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 49 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Rollins Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~14 ft est.
Surface area
200 acres
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Wyoming has not published bathymetry for Rollins Reservoir.
Lake Size & Watershed
Watershed (drainage) area
2 sq mi
HydroLAKES / HydroSHEDS
Shoreline
2 mi
HydroLAKES / HydroSHEDS
Elevation
6,565 ft
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.
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Reservoir Info (USACE NID)
Rollins Reservoir is a man-made reservoir impounded by the Paterson Lake (completed 1907), built primarily for irrigation on the Blacks Fork River; earth-type dam, 14 ft tall and 1,650 ft long.
- Surface area
- 200 ac
- Normal storage
- 1,237 ac-ft
- Max storage
- 1,649 ac-ft
- Drainage area
- 0 sq mi
- Hazard class
- Significant
- Owner
- JOHN L. & CHERYL EYRE
Source: USACE National Inventory of Dams, NID ID WY01248 · Operator website
Nearby Lakes in Uinta County
Frequently asked questions about Rollins Reservoir
Where is Rollins Reservoir?
- Rollins Reservoir is a lake in Uinta County, Wyoming. Its water-quality measurements are published by Wyoming DEQ and shown on this page as reported.
What is the water quality of Rollins Reservoir?
- Rollins Reservoir in Uinta County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 6.2 ft visibility. Phosphorus: 20.8 µg/L. Surface area: 200 acres.
Is Rollins Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Rollins Reservoir?
- No published bathymetric survey covers Rollins Reservoir, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 14 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 200 acres.
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Where this data comes from
4 measurements from 1 monitoring station, 2013. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- State of Wyoming Department of Environmental Quality Watershed Program
WYDEQ_WATERSHED4 samples · 2013
Analytical methods
- Secchi
- Total Phosphorus After Block Digestion
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.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)