Greenleaf Lake
Muskogee County, Oklahoma739 acresView mapDirections
Nutrients and algae run above the regional average.
↓ down from C at the last regrade
- Eutrophic
- Impaired · Algal growth
- #1 of 1 in the county
- 35 ft max depth
- Public access
- Limited data
Greenleaf Lake in Muskogee County, Oklahoma has a water quality grade of D (Nutrient-rich). Water clarity: 2.5 ft visibility. Phosphorus: 49.5 µg/L. Surface area: 739 acres.
- Clarity
- 2.5 ft
- Max depth
- ~35 ft est.
- Area
- 739 acres
- Type
- Eutrophic
- Phosphorus
- 49.5 µg/L
- Trend
- ↓ Declining
- Public access
- Yes
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Stays near Greenleaf Lake
Compare lakeside cabins, hotels, and vacation rentals near Greenleaf Lake in Muskogee 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. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Greenleaf Lake are listed below.
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Watch Greenleaf Lake’s letter
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Greenleaf Lake is a 739-acre productive, nutrient-rich eutrophic lake in Muskogee County, Oklahoma with an estimated average depth of about 35 feet. Water quality is graded D based on 1 sampling years through 2024. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, ODEQ, last sampled 2024-11-05. Grade methodology: LakeQuality methodology.
What Greenleaf Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The D is nutrients and algae, not a swimming clearance. Greenleaf Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury. Check local advisories before you swim.
Water Quality Grade: D (Nutrient-rich)
Very murky, less than 2.5 ft of visibility. Phosphorus 49.5 µg/L. TSI 62. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.5 ft | Not graded |
| Phosphorus | 49.5 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 62 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~35 ft est. |
| Surface Area | 739 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 Greenleaf Lake.
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
- Green Leaf State ParkPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Greenleaf Lake
Water Quality Trend: ↓ Declining
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -16.181 m/yr | 4 |
Reservoir Info (USACE NID)
Greenleaf Lake is a man-made reservoir impounded by the Green Leaf Lake (completed 1935), built primarily for fish and wildlife pond on the Greenleaf Creek; earth-type dam, 50 ft tall and 1,400 ft long.
- Surface area
- 739 ac
- Normal storage
- 14,720 ac-ft
- Max storage
- 31,790 ac-ft
- Drainage area
- 86 sq mi
- Hazard class
- Significant
- Owner
- Camp Gruber
All listed purposes: Fish and Wildlife Pond;Recreation;Water Supply.
Source: USACE National Inventory of Dams, NID ID OK20992 · Operator website
EPA Impairment Status
Greenleaf 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 OK120400010130_00 · Official waterbody report
County Ranking
Ranked #1 of 1 lakes in Muskogee County
Nearby Lakes in Muskogee County
Frequently asked questions about Greenleaf Lake
Where is Greenleaf Lake?
- Greenleaf Lake is a lake in Muskogee County, Oklahoma. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Greenleaf Lake?
- Greenleaf Lake in Muskogee County, Oklahoma has a water quality grade of D (Nutrient-rich). Water clarity: 2.5 ft visibility. Phosphorus: 49.5 µg/L. Surface area: 739 acres.
Is Greenleaf Lake safe to swim in?
- The D is nutrients and algae, not a swimming clearance. Greenleaf Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury. Check local advisories before you swim.
How deep is Greenleaf Lake?
- No published bathymetric survey covers Greenleaf Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 35 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 739 acres.
Are there boat ramps on Greenleaf Lake?
- Greenleaf Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Green Leaf State Park. Public access is listed as yes.
Explore Greenleaf Lake across LakeQuality
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Other Grade D Lakes in Oklahoma
Eutrophic Lakes in Oklahoma
Where this data comes from
127 measurements from 8 monitoring stations, 2016–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Cherokee Nation (Tribal)
CHEROKEE_WQX90 samples · 2024 - OWRB Lakes Monitoring
OKWRB-LAKES_WQX37 samples · 2016–2024
Analytical methods
- OWRB Lakes Field Data Collection
- Determination of Turbidity
- CN_QAPP
Monitoring station identifiers (8)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated 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