Deaver Reservoir -D
Park County, Wyoming80 acresView mapDirections
Wyoming DEQ publishes the water-quality measurements for Deaver Reservoir -D. Here is what has been measured.
- Mesotrophic
- 25 ft max depth
- Limited data
Deaver Reservoir -D in Park County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Phosphorus: 20 µg/L. Surface area: 80 acres.
Deaver Reservoir -D is a 80-acre mesotrophic lake in Park County, Wyoming with an estimated average depth of about 25 feet. Compared to the 4 other monitored lakes in Park County, Deaver Reservoir -D ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2016-09-20. Methodology: how these readings are compared.
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Deaver Reservoir -D 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 Deaver Reservoir -D
These are the measurements Wyoming DEQ publishes for Deaver Reservoir -D, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 20 µg/L. TSI 47.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 20µg/L | Good GoodFairPoor |
| 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. | 47 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Deaver Reservoir -D
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~25 ft est.
Surface area
80 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 Deaver Reservoir -D.
Lake Size & Watershed
Watershed (drainage) area
0 sq mi
HydroLAKES / HydroSHEDS
Shoreline
1.7 mi
HydroLAKES / HydroSHEDS
Elevation
4,311 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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Fishing Deaver Reservoir -D
Water quality readings over time
2 seasons of samples on record (2015–2016). Calling a direction takes at least 4 years of the same measurement.
Phosphorus
Stable0 µg/L/yr2 years
Reservoir Info (USACE NID)
Deaver Reservoir -D is a man-made reservoir impounded by the Deaver Dam (completed 1918), built primarily for fish and wildlife pond on the Shoshone River Offstream; earth-type dam, 16 ft tall and 1,300 ft long.
- Surface area
- 80 ac
- Normal storage
- 681 ac-ft
- Max storage
- 681 ac-ft
- Drainage area
- 1 sq mi
- Hazard class
- Low
- Owner
- BUREAU OF RECLAMATION
All listed purposes: Fish and Wildlife Pond;Irrigation.
Source: USACE National Inventory of Dams, NID ID WY01379 · Operator website · Matched by proximity (0.21 km)
Nearby Lakes in Park County
Frequently asked questions about Deaver Reservoir -D
Where is Deaver Reservoir -D?
- Deaver Reservoir -D is a lake in Park County, Wyoming. Its water-quality measurements are published by Wyoming DEQ and shown on this page as reported.
What is the water quality of Deaver Reservoir -D?
- Deaver Reservoir -D in Park County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Phosphorus: 20 µg/L. Surface area: 80 acres.
Is Deaver Reservoir -D safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Deaver Reservoir -D?
- No published bathymetric survey covers Deaver Reservoir -D, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 25 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 80 acres.
Explore Deaver Reservoir -D across LakeQuality
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Where this data comes from
8 measurements from 1 monitoring station, 2015–2016. 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_WATERSHED8 samples · 2015–2016
Analytical methods
- 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)