Rawlins Reservoir
Carbon County, Wyoming31 acresView mapDirections
Nutrients and algae run above the regional average.
- Eutrophic
- #10 of 10 in the county
- 13 ft max depth
- Limited data
Rawlins Reservoir in Carbon County, Wyoming has a water quality grade of D (Nutrient-rich). Phosphorus: 60 µg/L. Surface area: 31 acres.
- Max depth
- ~13 ft est.
- Area
- 31 acres
- Type
- Eutrophic
- Phosphorus
- 60 µg/L
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Rawlins Reservoir is a 31-acre productive, nutrient-rich eutrophic lake in Carbon County, Wyoming with an estimated average depth of about 13 feet. Water quality is graded D based on 1 sampling years through 2017. Compared to the 9 other monitored lakes in Carbon County, Rawlins Reservoir ranks #10 for water quality.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2017-09-18. 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)
No clarity data. Phosphorus 60 µg/L. TSI 63. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 60 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 63 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~13 ft est. |
| Surface Area | 31 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 Rawlins Reservoir.
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 Rawlins Reservoir
Reservoir Info (USACE NID)
Rawlins Reservoir is a man-made reservoir impounded by the Rawlins (completed 1956), built primarily for water supply on the Sage Creek; earth-type dam, 47 ft tall and 700 ft long.
- Surface area
- 31 ac
- Normal storage
- 624 ac-ft
- Max storage
- 792 ac-ft
- Drainage area
- 0 sq mi
- Hazard class
- Low
- Owner
- CITY OF RAWLINS (DANNY RODRIGUEZ)
Source: USACE National Inventory of Dams, NID ID WY00379 · Operator website
County Ranking
Ranked #10 of 10 lakes in Carbon County
Nearby Lakes in Carbon County
Frequently asked questions about Rawlins Reservoir
Where is Rawlins Reservoir?
- Rawlins Reservoir is a lake in Carbon County, Wyoming. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Rawlins Reservoir?
- Rawlins Reservoir in Carbon County, Wyoming has a water quality grade of D (Nutrient-rich). Phosphorus: 60 µg/L. Surface area: 31 acres.
Is Rawlins Reservoir safe to swim in?
- The D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
How deep is Rawlins Reservoir?
- No published bathymetric survey covers Rawlins Reservoir, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 13 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 31 acres.
Explore Rawlins Reservoir across LakeQuality
More Wyoming Lake Rankings
Other Grade D Lakes in Wyoming
Eutrophic Lakes in Wyoming
Where this data comes from
3 measurements from 1 monitoring station, 2017. 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_WATERSHED3 samples · 2017
Analytical methods
- Total Phosphorus After Block Digestion
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)