Leon-Petty Gulf Lake
Leon-Petty Gulf Lake in Leon County, Florida has a water quality grade of B (Good). Water clarity: 4.5 ft visibility. Phosphorus: 23.5 µg/L. Surface area: 25 acres.
- Clarity
- 4.5 ft
- Area
- 25 acres
- Type
- Eutrophic
- Trend
- ↓ Declining
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Leon-Petty Gulf Lake is a 25-acre productive, nutrient-rich eutrophic lake in Leon County, Florida. Water quality is graded B based on 1 sampling years through 2022. Overall water quality is declining over recent sampling years. Compared to the 58 other monitored lakes in Leon County, Leon-Petty Gulf Lake ranks #8 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2022-02-12. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyLow algae
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.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
Murky, only visible to about 4.5 ft. Phosphorus level: 23.5 µg/L. Trophic State Index: 53.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.5 ft | Not graded |
| Phosphorus | 23.5 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 53 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Leon-Petty Gulf Lake
Compare lakeside cabins, hotels, and vacation rentals near Leon-Petty Gulf Lake in Leon County, Florida — 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.
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 25 acres |
No bathymetric survey has been published for Leon-Petty Gulf Lake, so its depth is not documented here.
Fishing Leon-Petty Gulf Lake
Water Quality Trend: ↓ Declining
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.477 m/yr | 6 |
| Phosphorus | ↓ Declining | +0.87 µg/L/yr | 6 |
Reservoir Info (USACE NID)
Leon-Petty Gulf Lake is a man-made reservoir impounded by the Petty Gulf Lake Dam (completed 1972), built primarily for recreation on the Tr-Lake Iamonia; earth-type dam, 25 ft tall and 1,440 ft long.
- Surface area
- 25 ac
- Normal storage
- 203 ac-ft
- Max storage
- 233 ac-ft
- Drainage area
- 0 sq mi
- Hazard class
- Low
- Owner
- KILLEARN LAKES PLANTATION HOME OWNERS ASSOCIATION
All listed purposes: Recreation;Fire Protection, Stock, Or Small Fish Pond.
Source: USACE National Inventory of Dams, NID ID FL00117 · Operator website · Matched by proximity (0.55 km)
EPA Impairment Status
Leon-Petty Gulf 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 FL564C · Official waterbody report · Matched by proximity (0.1 km)
County Ranking
Ranked #8 of 59 lakes in Leon County
Nearby Lakes in Leon County
Frequently asked questions about Leon-Petty Gulf Lake
Where is Leon-Petty Gulf Lake?
- Leon-Petty Gulf Lake is a lake in Leon County, Florida. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Leon-Petty Gulf Lake?
- Leon-Petty Gulf Lake in Leon County, Florida has a water quality grade of B (Good). Water clarity: 4.5 ft visibility. Phosphorus: 23.5 µg/L. Surface area: 25 acres.
Is Leon-Petty Gulf Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Leon-Petty Gulf Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
Explore Leon-Petty Gulf Lake across LakeQuality
More Florida Lake Rankings
Other Grade B Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
69 measurements from 3 monitoring stations, 2020–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX69 samples · 2020–2022
Monitoring station identifiers (3)
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