Hulah Lake
Osage County, Oklahoma3,570 acresView mapDirections
Oklahoma DEQ publishes the water-quality measurements for Hulah Lake. Here is what has been measured.
- Impaired · Mercury
- Public access
- Limited data
Ask about Hulah Lake
Answers come straight from the public measurements and survey records on this page.
Hulah Lake in Osage County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Water clarity: 1.2 ft visibility. Surface area: 3570 acres.
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Hulah Lake is a 3,570-acre lake in Osage County, Oklahoma. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available with 5 public boat landings.
Source: EPA Water Quality Portal sampling records, ODEQ, last sampled 2023-09-25. Grade methodology: LakeQuality methodology.
What Hulah Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch5 documented ramps
- Big water3,570 acres
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Hulah Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, turbidity. Check local advisories before you swim.
Whether Hulah 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 Hulah Lake
These are the measurements Oklahoma DEQ publishes for Hulah 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 1.2 ft of visibility. TSI 75.
| Metric | Value | EPA condition class |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.2 ft | Measured, not scored |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 75 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 3,570 acres |
| Public Access | Yes |
No bathymetric survey has been published for Hulah Lake, so its depth is not documented here.
Recreation & Access
- Skull Creek SouthPublic
- Turkey Creek SouthPublic
- Turkey Creek NorthPublic
- Hulah LakePublic
- Hulah LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Hulah Lake
Water Quality Trend: ↑ Improving
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +4.559 m/yr | 4 |
Reservoir Info (USACE NID)
Hulah Lake is a man-made reservoir impounded by the Hulah Dam (completed 1951), built primarily for flood risk reduction on the Caney River; gravity-type dam, 94 ft tall and 5,200 ft long.
- Surface area
- 3,570 ac
- Normal storage
- 3,116 ac-ft
- Max storage
- 289,000 ac-ft
- Drainage area
- 732 sq mi
- Hazard class
- High
- Owner
- USACE - Tulsa District
All listed purposes: Flood Risk Reduction;Other;Water Supply.
Source: USACE National Inventory of Dams, NID ID OK10312 · Operator website
EPA Impairment Status
Hulah Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit OK121400030020_00 · Official waterbody report
Nearby Lakes in Osage County
Frequently asked questions about Hulah Lake
Where is Hulah Lake?
- Hulah Lake is a lake in Osage County, Oklahoma. Its water-quality measurements are published by Oklahoma DEQ and shown on this page as reported.
What is the water quality of Hulah Lake?
- Hulah Lake in Osage County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Water clarity: 1.2 ft visibility. Surface area: 3570 acres.
Is Hulah Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Hulah Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, turbidity. Check local advisories before you swim.
Are there boat ramps on Hulah Lake?
- Hulah Lake has 5 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Skull Creek South, Turkey Creek South, Turkey Creek North, Hulah Lake, among others. Public access is listed as yes.
Explore Hulah Lake across LakeQuality
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Where this data comes from
32 measurements from 3 monitoring stations, 2016–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- OWRB Lakes Monitoring
OKWRB-LAKES_WQX32 samples · 2016–2023
Analytical methods
- OWRB Lakes Field Data Collection
- Determination of Turbidity
- Phosphorus by Two Reagent Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
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
Impairment status from EPA ATTAINS 303(d) database
Named boat-access points from the USGS National Boat Ramps inventory