Bump-Sullivan Reservoir
Goshen County, Wyoming441 acresView mapDirections
Wyoming DEQ publishes the water-quality measurements for Bump-Sullivan Reservoir. Here is what has been measured.
- Hypereutrophic
- 23 ft max depth
- Limited data
Bump-Sullivan Reservoir in Goshen County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 0.2 ft visibility. Phosphorus: 420 µg/L. Surface area: 441 acres.
Bump-Sullivan Reservoir is a 441-acre highly nutrient-loaded hypereutrophic lake in Goshen County, Wyoming with an estimated average depth of about 23 feet. Compared to the 2 other monitored lakes in Goshen County, Bump-Sullivan Reservoir ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2018-09-04. 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 Bump-Sullivan Reservoir 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 Bump-Sullivan Reservoir
These are the measurements Wyoming DEQ publishes for Bump-Sullivan Reservoir, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 0.2 ft of visibility. Phosphorus 420 µg/L. TSI 94.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 0.2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 420µg/L | Poor 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. | 94 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Bump-Sullivan Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~23 ft est.
Surface area
441 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 Bump-Sullivan Reservoir.
Lake Size & Watershed
Watershed (drainage) area
10 sq mi
HydroLAKES / HydroSHEDS
Shoreline
5.8 mi
HydroLAKES / HydroSHEDS
Elevation
4,295 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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Stays near Bump-Sullivan Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Bump-Sullivan 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 readings cover nutrients and algae, not lodging. Cabins and rentals around Bump-Sullivan Reservoir are listed below.
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Fishing Bump-Sullivan Reservoir
Reservoir Info (USACE NID)
Bump-Sullivan Reservoir is a man-made reservoir impounded by the Goshen No. 2 (completed 1924), built primarily for irrigation on the Horse Creek; earth-type dam, 12 ft tall and 1,640 ft long.
- Surface area
- 441 ac
- Normal storage
- 1,929 ac-ft
- Max storage
- 2,063 ac-ft
- Drainage area
- 9.4 sq mi
- Hazard class
- Significant
- Owner
- GOSHEN MUTUAL RESERVOIR & DITCH COMPANY
Source: USACE National Inventory of Dams, NID ID WY02375 · Operator website · Matched by proximity (0.24 km)
Nearby Lakes in Goshen County
Frequently asked questions about Bump-Sullivan Reservoir
Where is Bump-Sullivan Reservoir?
- Bump-Sullivan Reservoir is a lake in Goshen County, Wyoming. Its water-quality measurements are published by Wyoming DEQ and shown on this page as reported.
What is the water quality of Bump-Sullivan Reservoir?
- Bump-Sullivan Reservoir in Goshen County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 0.2 ft visibility. Phosphorus: 420 µg/L. Surface area: 441 acres.
Is Bump-Sullivan Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Bump-Sullivan Reservoir?
- No published bathymetric survey covers Bump-Sullivan Reservoir, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 23 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 441 acres.
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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)
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)