Wheatland Reservoir
Platte County, Wyoming424 acresView mapDirections
Clarity, phosphorus, and algae sit in the clean band for this region.
- Mesotrophic
- #4 of 9 in the county
- 42 ft max depth
- Public access
- Limited data
Wheatland Reservoir in Platte County, Wyoming has a water quality grade of B (Good). Water clarity: 8.9 ft visibility. Phosphorus: 20 µg/L. Surface area: 424 acres.
- Clarity
- 8.9 ft
- Max depth
- ~42 ft est.
- Area
- 424 acres
- Type
- Mesotrophic
- Phosphorus
- 20 µg/L
- Trend
- → Stable
- Public access
- Yes
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Watch Wheatland Reservoir’s letter
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Wheatland Reservoir is a 424-acre mesotrophic lake in Platte County, Wyoming with an estimated average depth of about 42 feet. Water quality is graded B based on 1 sampling years through 2018. Water clarity is improving over recent sampling years. Limited fish-species data available. Public access is available with 2 public boat landings. Compared to the 8 other monitored lakes in Platte County, Wheatland Reservoir ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2018-09-04. Grade methodology: LakeQuality methodology.
What Wheatland Reservoir is good for
From access and monitoring records, not editorial picks.
- Boat launch2 documented ramps
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)
Moderate clarity, visible to about 8.9 ft. Phosphorus 20 µg/L. TSI 46. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8.9 ft | Not graded |
| Phosphorus | 20 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~42 ft est. |
| Average Depth | ~33 ft est. |
| Surface Area | 424 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 Wheatland 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.
Recreation & Access
- Wheatland Reservoir #1Public
- Wheatland ReservoirPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Wheatland Reservoir
Water Quality Trend: → Stable
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.183 m/yr | 2 |
| Phosphorus | ↓ Declining | +2.5 µg/L/yr | 2 |
Reservoir Info (USACE NID)
Wheatland Reservoir is a man-made reservoir impounded by the Wyoming Development Company No. 1 (completed 1960), built primarily for irrigation on the Sybille Creek Offstream; earth-type dam, 49 ft tall and 6,600 ft long.
- Surface area
- 424 ac
- Normal storage
- 9,370 ac-ft
- Max storage
- 11,590 ac-ft
- Drainage area
- 1.5 sq mi
- Hazard class
- Significant
- Owner
- WHEATLAND IRRIGATION DISTRICT
Source: USACE National Inventory of Dams, NID ID WY00091 · Operator website · Matched by proximity (0.64 km)
County Ranking
Ranked #4 of 9 lakes in Platte County
Nearby Lakes in Platte County
Frequently asked questions about Wheatland Reservoir
Where is Wheatland Reservoir?
- Wheatland Reservoir is a lake in Platte County, Wyoming. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Wheatland Reservoir?
- Wheatland Reservoir in Platte County, Wyoming has a water quality grade of B (Good). Water clarity: 8.9 ft visibility. Phosphorus: 20 µg/L. Surface area: 424 acres.
Is Wheatland Reservoir safe to swim in?
- The B is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
How deep is Wheatland Reservoir?
- No published bathymetric survey covers Wheatland Reservoir, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 42 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 424 acres.
Are there boat ramps on Wheatland Reservoir?
- Wheatland Reservoir has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Wheatland Reservoir #1, Wheatland Reservoir. Public access is listed as yes.
Explore Wheatland Reservoir across LakeQuality
More Wyoming Lake Rankings
Other Grade B Lakes in Wyoming
Mesotrophic Lakes in Wyoming
Where this data comes from
12 measurements from 1 monitoring station, 2015–2018. 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_WATERSHED12 samples · 2015–2018
Analytical methods
- Secchi
- 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)
Named boat-access points from the USGS National Boat Ramps inventory