Fort Supply Lake
Woodward County, Oklahoma1,820 acresView mapDirections
Oklahoma DEQ publishes the water-quality measurements for Fort Supply Lake. Here is what has been measured.
- 62 ft max depth
- Public access
- Limited data
Fort Supply Lake in Woodward County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Water clarity: 0.6 ft visibility. Surface area: 1820 acres.
Fort Supply Lake is a 1,820-acre lake in Woodward County, Oklahoma with an estimated average depth of about 62 feet. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available with 6 public boat landings.
Source: EPA Water Quality Portal sampling records, ODEQ, last sampled 2021-09-07. Methodology: how these readings are compared.
What Fort Supply Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch6 documented ramps
- Camping2 public campgrounds nearby
- Big water1,820 acres
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Fort Supply Lake 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 Fort Supply Lake
These are the measurements Oklahoma DEQ publishes for Fort Supply 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 0.6 ft of visibility. TSI 84.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 0.6ft | 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. | 84 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Fort Supply Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~62 ft est.
Surface area
1,820 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 Fort Supply Lake.
Lake Size & Watershed
Watershed (drainage) area
1,921 sq mi
HydroLAKES / HydroSHEDS
Shoreline
8.6 mi
HydroLAKES / HydroSHEDS
Elevation
2,028 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
- Lake Fort SupplyPublic
- Lake Fort SupplyPublic
- Lake Fort SupplyPublic
- Lake Fort SupplyPublic
- Lake Fort SupplyPublic
- Lake Fort SupplyPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Public campgrounds near Fort Supply Lake
Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes
Stays via Stay22
Stays near Fort Supply Lake
Compare lakeside cabins, hotels, and vacation rentals near Fort Supply Lake in Woodward County, Oklahoma — 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 Fort Supply Lake
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Fishing Fort Supply Lake
Water quality readings over time
3 seasons of samples on record (2016–2021). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Improving3 years
Reservoir Info (USACE NID)
Fort Supply Lake is a man-made reservoir impounded by the Fort Supply Dam (completed 1942), built primarily for flood risk reduction on the Wolf Creek; earth-type dam, 82 ft tall and 12,625 ft long.
- Surface area
- 1,820 ac
- Normal storage
- 13,900 ac-ft
- Max storage
- 100,700 ac-ft
- Drainage area
- 1,735 sq mi
- Hazard class
- High
- Owner
- USACE - Tulsa District
All listed purposes: Flood Risk Reduction;Recreation.
Source: USACE National Inventory of Dams, NID ID OK10318 · Operator website
Nearby Lakes in Woodward County
Frequently asked questions about Fort Supply Lake
Where is Fort Supply Lake?
- Fort Supply Lake is a lake in Woodward County, Oklahoma. Its water-quality measurements are published by Oklahoma DEQ and shown on this page as reported.
What is the water quality of Fort Supply Lake?
- Fort Supply Lake in Woodward County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Water clarity: 0.6 ft visibility. Surface area: 1820 acres.
Is Fort Supply Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Fort Supply Lake?
- No published bathymetric survey covers Fort Supply Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 62 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 1820 acres.
Are there boat ramps on Fort Supply Lake?
- Fort Supply Lake has 6 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Lake Fort Supply, Lake Fort Supply, Lake Fort Supply, Lake Fort Supply, among others. Public access is listed as yes.
Can I fish at Fort Supply Lake?
- Fort Supply Lake has 6 documented boat landings 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.
Are there campgrounds on Fort Supply Lake?
- Fort Supply Lake has 2 public campgrounds from USGS The National Map within 5 km, including Beaver Point, Supply Park. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.
Explore Fort Supply Lake across LakeQuality
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Where this data comes from
34 measurements from 3 monitoring stations, 2016–2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- OWRB Lakes Monitoring
OKWRB-LAKES_WQX34 samples · 2016–2021
Analytical methods
- OWRB Lakes Field Data Collection
- Determination of Turbidity
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
Public campgrounds from USGS The National Map Structures, within about 3 miles