Ocean Lake
Fremont County, WyomingView mapDirections
Wyoming DEQ publishes the water-quality measurements for Ocean Lake. Here is what has been measured.
- Eutrophic
- Impaired · Sediment / turbidity
- 77 ft max depth
- Public access
- Limited data
Ocean Lake in Fremont County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 2.2 ft visibility. Phosphorus: 25 µg/L.
Ocean Lake is a productive, nutrient-rich eutrophic lake in Fremont County, Wyoming with an estimated average depth of about 77 feet. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 17 other monitored lakes in Fremont County, Ocean Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2019-09-12. Methodology: how these readings are compared.
What Ocean Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
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. Ocean Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for sediment / turbidity. Check local advisories before you swim.
Whether Ocean Lake 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 Ocean Lake
These are the measurements Wyoming DEQ publishes for Ocean Lake, 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 2.2 ft of visibility. Phosphorus 25 µg/L. TSI 58.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2.2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 25µg/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. | 58 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Ocean Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~77 ft est.
Public access
Yes
Listed by Wyoming DEQ
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Wyoming has not published bathymetry for Ocean Lake.
Lake Size & Watershed
Watershed (drainage) area
111 sq mi
HydroLAKES / HydroSHEDS
Surface area
5,926 acres
HydroLAKES / HydroSHEDS
Shoreline
17.8 mi
HydroLAKES / HydroSHEDS
Elevation
5,233 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.
Recreation & Access
- Ocean LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Ocean Lake
Compare lakeside cabins, hotels, and vacation rentals near Ocean Lake in Fremont 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.
Top-rated places to stay near Ocean Lake
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Fishing Ocean Lake
EPA Impairment Status
Ocean Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Aquatic life.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit WYBH100800050202_01 · Official waterbody report
Nearby Lakes in Fremont County
Frequently asked questions about Ocean Lake
Where is Ocean Lake?
- Ocean Lake is a lake in Fremont County, Wyoming. Its water-quality measurements are published by Wyoming DEQ and shown on this page as reported.
What is the water quality of Ocean Lake?
- Ocean Lake in Fremont County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 2.2 ft visibility. Phosphorus: 25 µg/L.
Is Ocean Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Ocean Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for sediment / turbidity. Check local advisories before you swim.
How deep is Ocean Lake?
- No published bathymetric survey covers Ocean Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 77 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Are there boat ramps on Ocean Lake?
- Ocean Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Ocean Lake. Public access is listed as yes.
Can I fish at Ocean Lake?
- Ocean Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Wyoming's fish and wildlife agency, so check its current regulations before you go.
Explore Ocean Lake across LakeQuality
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Where this data comes from
12 measurements from 2 monitoring stations, 2019. 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 · 2019
Analytical methods
- Secchi
- Total Phosphorus After Block Digestion
Monitoring station identifiers (2)
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
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory