Graham Reservoir
Uinta County, Wyoming26 acresView mapDirections
Wyoming DEQ publishes the water-quality measurements for Graham Reservoir. Here is what has been measured.
- Limited data
Graham Reservoir in Uinta County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 2.4 ft visibility. Phosphorus: 17.9 µg/L. Surface area: 26 acres.
Graham Reservoir is a 26-acre lake in Uinta County, Wyoming. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2014-09-23. 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 Graham 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 Graham Reservoir
These are the measurements Wyoming DEQ publishes for Graham Reservoir, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 2.4 ft of visibility. Phosphorus 17.9 µg/L. TSI 55.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2.4ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 17.9µg/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. | 55 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Graham Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
26 acres
No bathymetric survey has been published for Graham Reservoir, so its depth is not documented here.
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Fishing Graham Reservoir
Water quality readings over time
2 seasons of samples on record (2013–2014). Calling a direction takes at least 4 years of the same measurement.
Phosphorus
Improving-21.2 µg/L/yr2 years
Reservoir Info (USACE NID)
Graham Reservoir is a man-made reservoir impounded by the Graham (completed 1945), built primarily for irrigation on the Smith'S Fork Creek; earth-type dam, 33 ft tall and 420 ft long.
- Surface area
- 26 ac
- Normal storage
- 221 ac-ft
- Drainage area
- 0 sq mi
- Hazard class
- Low
- Owner
- BENEDICT ENTERPRISES LLC
Source: USACE National Inventory of Dams, NID ID WY01208 · Operator website
Nearby Lakes in Uinta County
Frequently asked questions about Graham Reservoir
Where is Graham Reservoir?
- Graham 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 Graham Reservoir?
- Graham Reservoir in Uinta County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 2.4 ft visibility. Phosphorus: 17.9 µg/L. Surface area: 26 acres.
Is Graham Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Graham Reservoir across LakeQuality
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Where this data comes from
7 measurements from 1 monitoring station, 2013–2014. 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_WATERSHED7 samples · 2013–2014
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.