Lake Ozzie Cobb
Pushmataha County, Oklahoma116 acresView mapDirections
Oklahoma DEQ publishes the water-quality measurements for Lake Ozzie Cobb. Here is what has been measured.
- 47 ft max depth
- Public access
- Limited data
Lake Ozzie Cobb in Pushmataha County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Water clarity: 2 ft visibility. Surface area: 116 acres.
Lake Ozzie Cobb is a 116-acre lake in Pushmataha County, Oklahoma with an estimated average depth of about 47 feet. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, ODEQ, last sampled 2017-08-22. Methodology: how these readings are compared.
What Lake Ozzie Cobb is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lake Ozzie Cobb is safe to swim in today is a call for the Oklahoma Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lake Ozzie Cobb
These are the measurements Oklahoma DEQ publishes for Lake Ozzie Cobb, 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 ft of visibility. TSI 67.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| 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. | 67 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lake Ozzie Cobb
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~47 ft est.
Surface area
116 acres
Public access
Yes
Listed by Oklahoma DEQ
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Oklahoma has not published bathymetry for Lake Ozzie Cobb.
Lake Size & Watershed
Watershed (drainage) area
10 sq mi
HydroLAKES / HydroSHEDS
Shoreline
1 mi
HydroLAKES / HydroSHEDS
Elevation
525 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
- Rock Creek - Lake Ozzie CobbPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Lake Ozzie Cobb
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Fishing Lake Ozzie Cobb
Reservoir Info (USACE NID)
Lake Ozzie Cobb is a man-made reservoir impounded by the Ozzie Cobb Lake (completed 1958), built primarily for recreation on the Rock Cr; earth-type dam, 24 ft tall and 1,500 ft long.
- Surface area
- 116 ac
- Normal storage
- 833 ac-ft
- Max storage
- 1,200 ac-ft
- Drainage area
- 8 sq mi
- Hazard class
- Low
- Owner
- DEPT OF WILDLIFE
Source: USACE National Inventory of Dams, NID ID OK02342 · Operator website
Nearby Lakes in Pushmataha County
Frequently asked questions about Lake Ozzie Cobb
Where is Lake Ozzie Cobb?
- Lake Ozzie Cobb is a lake in Pushmataha County, Oklahoma. Its water-quality measurements are published by Oklahoma DEQ and shown on this page as reported.
What is the water quality of Lake Ozzie Cobb?
- Lake Ozzie Cobb in Pushmataha County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Water clarity: 2 ft visibility. Surface area: 116 acres.
Is Lake Ozzie Cobb safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Lake Ozzie Cobb?
- No published bathymetric survey covers Lake Ozzie Cobb, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 47 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 116 acres.
Are there boat ramps on Lake Ozzie Cobb?
- Lake Ozzie Cobb has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Rock Creek - Lake Ozzie Cobb. Public access is listed as yes.
Can I fish at Lake Ozzie Cobb?
- Lake Ozzie Cobb 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 Oklahoma's fish and wildlife agency, so check its current regulations before you go.
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Where this data comes from
12 measurements from 3 monitoring stations, 2016–2017. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- OWRB Lakes Monitoring
OKWRB-LAKES_WQX12 samples · 2016–2017
Analytical methods
- OWRB Lakes Field Data Collection
Monitoring station identifiers (3)
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)
Named boat-access points from the USGS National Boat Ramps inventory