Lake Ellsworth
Comanche County, Oklahoma5,220 acresView mapDirections
Oklahoma DEQ publishes the water-quality measurements for Lake Ellsworth. Here is what has been measured.
- Impaired · Algal growth
- 88 ft max depth
- Public access
- Limited data
Ask about Lake Ellsworth
Answers come straight from the public measurements and survey records on this page.
Lake Ellsworth in Comanche County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Water clarity: 1.6 ft visibility. Surface area: 5220 acres.
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Lake Ellsworth is a 5,220-acre lake in Comanche County, Oklahoma with an estimated average depth of about 88 feet. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available with 4 public boat landings.
Source: EPA Water Quality Portal sampling records, ODEQ, last sampled 2023-10-16. Grade methodology: LakeQuality methodology.
What Lake Ellsworth is good for
From access and monitoring records, not editorial picks.
- Boat launch4 documented ramps
- Big water5,220 acres
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Lake Ellsworth is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, turbidity. Check local advisories before you swim.
Whether Lake Ellsworth 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 Ellsworth
These are the measurements Oklahoma DEQ publishes for Lake Ellsworth, 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 1.6 ft of visibility. TSI 71.
| Metric | Value | EPA condition class |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.6 ft | Measured, not scored |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 71 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Current Conditions
USGS snapshot Sep 7, 2026, 3:45 PM from gauge 07308990 (Lake Ellsworth near Elgin, OK). Station page ↗ — a live reading replaces this snapshot when the gauge responds. Missing live data is not an all-clear.
→ Lake Ellsworth water level: the live USGS gauge reading
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~88 ft est. |
| Average Depth | ~46 ft est. |
| Surface Area | 5,220 acres |
| Public Access | Yes |
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 Ellsworth.
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.
Recreation & Access
- Edgewater BlvdPublic
- Collier's LandingPublic
- Fisherman's CovePublic
- Resort RoadSemi-private
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Lake Ellsworth
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +5.75 m/yr | 2 |
Reservoir Info (USACE NID)
Lake Ellsworth is a man-made reservoir impounded by the Ellsworth (completed 1961), built primarily for water supply on the East Cache Creek; earth-type dam, 96 ft tall and 3,900 ft long.
- Surface area
- 5,220 ac
- Normal storage
- 59,470 ac-ft
- Max storage
- 189,200 ac-ft
- Drainage area
- 249 sq mi
- Hazard class
- High
- Owner
- City of Lawton
Source: USACE National Inventory of Dams, NID ID OK00452 · Operator website
EPA Impairment Status
Lake Ellsworth is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit OK311300030020_00 · Official waterbody report
Nearby Lakes in Comanche County
Frequently asked questions about Lake Ellsworth
Where is Lake Ellsworth?
- Lake Ellsworth is a lake in Comanche 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 Ellsworth?
- Lake Ellsworth in Comanche County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Water clarity: 1.6 ft visibility. Surface area: 5220 acres.
Is Lake Ellsworth safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lake Ellsworth is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, turbidity. Check local advisories before you swim.
How deep is Lake Ellsworth?
- No published bathymetric survey covers Lake Ellsworth, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 88 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 5220 acres.
What is the water level at Lake Ellsworth?
- The USGS snapshot on this page for Lake Ellsworth is 1222.11 ft of gage height, recorded Sep 7, 2026, 3:45 PM at gauge 07308990. Current Conditions hydrates a live NWIS reading from that same station when the gauge responds. A missed live fetch is not an all-clear.
Are there boat ramps on Lake Ellsworth?
- Lake Ellsworth has 4 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Edgewater Blvd, Collier's Landing, Fisherman's Cove, Resort Road. Public access is listed as yes.
Explore Lake Ellsworth across LakeQuality
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Where this data comes from
46 measurements from 4 monitoring stations, 2016–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- OWRB Lakes Monitoring
OKWRB-LAKES_WQX46 samples · 2016–2023
Analytical methods
- OWRB Lakes Field Data Collection
- Determination of Turbidity
Monitoring station identifiers (4)
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