Goshen Hole Reservoir
Goshen County, Wyoming787 acresView mapDirections
Nutrients and algae run above the regional average.
↑ up from F at the last regrade
- Hypereutrophic
- #2 of 3 in the county
- 15 ft max depth
- Limited data
Goshen Hole Reservoir in Goshen County, Wyoming has a water quality grade of D (Nutrient-rich). Water clarity: 1.1 ft visibility. Phosphorus: 100 µg/L. Surface area: 787 acres.
- Clarity
- 1.1 ft
- Max depth
- ~15 ft est.
- Area
- 787 acres
- Type
- Hypereutrophic
- Phosphorus
- 100 µg/L
Stays via Stay22
Stays near Goshen Hole Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Goshen Hole Reservoir in Goshen County, Wyoming — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Goshen Hole Reservoir are listed below.
Top-rated places to stay near Goshen Hole Reservoir
Prices for Sep 11–13, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Wyoming’s top lakes →
Watch Goshen Hole Reservoir’s letter
Email me if this lake’s grade moves. Grades stay free.
Or email
Goshen Hole Reservoir is a 787-acre highly nutrient-loaded hypereutrophic lake in Goshen County, Wyoming with an estimated average depth of about 15 feet. Water quality is graded D based on 1 sampling years through 2018. Compared to the 2 other monitored lakes in Goshen County, Goshen Hole Reservoir ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2018-09-04. 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)
Very murky, less than 1.1 ft of visibility. Phosphorus 100 µg/L. TSI 73. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.1 ft | Not graded |
| Phosphorus | 100 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 73 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~15 ft est. |
| Average Depth | ~2 ft est. |
| Surface Area | 787 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 Goshen Hole 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 Goshen Hole Reservoir
Reservoir Info (USACE NID)
Goshen Hole Reservoir is a man-made reservoir impounded by the Goshen Hole (completed 1957), built primarily for irrigation on the Offstream Horse Creek; earth-type dam, 26 ft tall and 1,220 ft long.
- Surface area
- 787 ac
- Normal storage
- 4,961 ac-ft
- Max storage
- 8,109 ac-ft
- Drainage area
- 25.6 sq mi
- Hazard class
- Significant
- Owner
- GOSHEN HOLE WATER USERS ASSOCIATION
All listed purposes: Irrigation;Fish and Wildlife Pond;Recreation.
Source: USACE National Inventory of Dams, NID ID WY01669 · Operator website
County Ranking
Ranked #2 of 3 lakes in Goshen County
Nearby Lakes in Goshen County
Frequently asked questions about Goshen Hole Reservoir
Where is Goshen Hole Reservoir?
- Goshen Hole Reservoir is a lake in Goshen County, Wyoming. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Goshen Hole Reservoir?
- Goshen Hole Reservoir in Goshen County, Wyoming has a water quality grade of D (Nutrient-rich). Water clarity: 1.1 ft visibility. Phosphorus: 100 µg/L. Surface area: 787 acres.
Is Goshen Hole Reservoir safe to swim in?
- The D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
How deep is Goshen Hole Reservoir?
- No published bathymetric survey covers Goshen Hole Reservoir, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 15 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 787 acres.
Explore Goshen Hole Reservoir across LakeQuality
More Wyoming Lake Rankings
Other Grade D Lakes in Wyoming
Hypereutrophic Lakes in Wyoming
Where this data comes from
6 measurements from 1 monitoring station, 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_WATERSHED6 samples · 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)