Lake Cameahwait
Fremont County, Wyoming414 acresView mapDirections
Clarity, phosphorus, and algae sit in the clean band for this region.
- Oligotrophic
- #1 of 18 in the county
- 19 ft max depth
- Public access
- Limited data
Lake Cameahwait in Fremont County, Wyoming has a water quality grade of B (Good). Water clarity: 11.6 ft visibility. Phosphorus: 10 µg/L. Surface area: 414 acres.
- Clarity
- 11.6 ft
- Max depth
- ~19 ft est.
- Area
- 414 acres
- Type
- Oligotrophic
- Phosphorus
- 10 µg/L
- Trend
- → Stable
- Public access
- Yes
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Watch Lake Cameahwait’s letter
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Lake Cameahwait is a 414-acre cold, clear oligotrophic lake in Fremont County, Wyoming with an estimated average depth of about 19 feet. Water quality is graded B based on 1 sampling years through 2020. Water clarity is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 17 other monitored lakes in Fremont County, Lake Cameahwait ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2020-09-17. Grade methodology: LakeQuality methodology.
What Lake Cameahwait is good for
From access and monitoring records, not editorial picks.
- Clear water11.6 ft of visibility
- Boat launch1 documented ramp
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 B is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: B (Good)
Good clarity, visible to about 11.6 ft. Phosphorus 10 µg/L. TSI 40. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 11.6 ft | Not graded |
| Phosphorus | 10 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 40 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~19 ft est. |
| Average Depth | ~10 ft est. |
| Surface Area | 414 acres |
| Public Access | Yes |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Wyoming has not published bathymetry for Lake Cameahwait.
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.
Recreation & Access
- Cameahwait Lake (Bass Lake)Public
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Lake Cameahwait
Water Quality Trend: → Stable
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.94 m/yr | 2 |
| Phosphorus | ↑ Improving | -0.7 µg/L/yr | 6 |
Reservoir Info (USACE NID)
Lake Cameahwait is a man-made reservoir impounded by the Lake Cameahwait Dam (completed 1973), built primarily for fire protection, stock, or small fish pond on the Cottonwood Drain Draw; earth-type dam, 13 ft tall and 1,000 ft long.
- Surface area
- 414 ac
- Normal storage
- 6,683 ac-ft
- Max storage
- 6,683 ac-ft
- Hazard class
- Low
- Owner
- BUREAU OF RECLAMATION
All listed purposes: Fire Protection, Stock, Or Small Fish Pond;Recreation.
Source: USACE National Inventory of Dams, NID ID WY01302 · Operator website
County Ranking
Ranked #1 of 18 lakes in Fremont County
Nearby Lakes in Fremont County
Frequently asked questions about Lake Cameahwait
Where is Lake Cameahwait?
- Lake Cameahwait is a lake in Fremont County, Wyoming. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Cameahwait?
- Lake Cameahwait in Fremont County, Wyoming has a water quality grade of B (Good). Water clarity: 11.6 ft visibility. Phosphorus: 10 µg/L. Surface area: 414 acres.
Is Lake Cameahwait safe to swim in?
- The B is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
How deep is Lake Cameahwait?
- No published bathymetric survey covers Lake Cameahwait, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 19 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 414 acres.
Are there boat ramps on Lake Cameahwait?
- Lake Cameahwait has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Cameahwait Lake (Bass Lake). Public access is listed as yes.
Explore Lake Cameahwait across LakeQuality
Species activity outlook by water temperature and season
Where to stay at Wyoming's top lakes, each with its grade
Low nutrients, clear water. The letter is not a swimming clearance.
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Other Grade B Lakes in Wyoming
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Where this data comes from
45 measurements from 2 monitoring stations, 2013–2020. 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_WATERSHED45 samples · 2013–2020
Analytical methods
- Secchi
- Total Phosphorus After Block Digestion
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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory