Jacc Lake
Jacc Lake in Walton County, Florida has a water quality grade of A (Excellent). Water clarity: 9.3 ft visibility. Phosphorus: 12 µg/L. Chlorophyll-a (algae): 5.3 µg/L.
- Clarity
- 9.3 ft
- Typical in August
- 87°F
- Type
- Mesotrophic
- Trend
- ↓ Declining
- Public access
- Yes
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Jacc Lake is a mesotrophic lake in Walton County, Florida. Water quality is graded A based on 2 sampling years through 2024. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 2 public boat landings. Compared to the 83 other monitored lakes in Walton County, Jacc Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2024-10-31. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyBacteria A
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.
Based on E. coli testing, Jacc Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 8 samples across 2 seasons.
This is a historical summary of past testing, not a current condition — bacteria levels change quickly, especially after rain. Always check Florida’s current beach and health-department advisories before swimming.
Water Quality Grade: A (Excellent)
Moderate clarity, visible to about 9.3 ft. Phosphorus level: 12 µg/L. Chlorophyll-a: 5.3 µg/L. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9.3 ft | Not graded |
| Phosphorus | 12 µg/L | Good |
| Chlorophyll-a (Algae) | 5.3 µg/L | Good |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Jacc Lake
Compare lakeside cabins, hotels, and vacation rentals near Jacc Lake in Walton 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.
Top-rated places to stay near Jacc Lake
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Planning a trip? Cabins and lodging at Jacc Lake → · more Florida lake trips
Water Temperature
Jacc Lake typically sits around 87°F at the surface in August. Summer average is about 86°F. Usually warmest in Jul (about 87°F) and coldest in Apr (about 72°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 215 field readings (2010–2024) via the EPA Water Quality Portal. See the full Jacc Lake water temperature breakdown →
Recreation & Access
- Florala State ParkPublic
Showing 1 of 2 documented landings from the USGS National Boat Ramps inventory.
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Jacc Lake
Water Quality Trend: ↓ Declining
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.436 m/yr | 3 |
| Phosphorus | ↓ Declining | +0.67 µg/L/yr | 2 |
| Chlorophyll-a | ↓ Declining | +0.17 µg/L/yr | 2 |
EPA Impairment Status
Jacc Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL38A · Official waterbody report · Matched by proximity (0.27 km)
County Ranking
Ranked #1 of 84 lakes in Walton County
Nearby Lakes in Walton County
Frequently asked questions about Jacc Lake
Where is Jacc Lake?
- Jacc Lake is a lake in Walton County, Florida. LakeQuality grades it A for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Jacc Lake?
- Jacc Lake in Walton County, Florida has a water quality grade of A (Excellent). Water clarity: 9.3 ft visibility. Phosphorus: 12 µg/L. Chlorophyll-a (algae): 5.3 µg/L.
Is Jacc Lake safe to swim in?
- Based on E. coli testing, Jacc Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 8 samples across 2 seasons. That works out to a bacteria swim-safety grade of A — a historical summary of past testing, not a current reading. Jacc Lake has a water quality grade of A (Excellent). Bacteria levels can spike quickly after heavy rain, so always check Florida's current beach and health-department advisories before you swim.
What is the water temperature of Jacc Lake?
- Jacc Lake typically sits around 87°F at the surface in August, from 215 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
Are there boat ramps on Jacc Lake?
- Jacc Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Florala State Park, among others. Public access is listed as yes.
Explore Jacc Lake across LakeQuality
More Florida Lake Rankings
Mesotrophic Lakes in Florida
Where this data comes from
43 measurements from 1 monitoring station, 2021–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- ALABAMA DEPT. OF ENVIRONMENTAL MANAGEMENT - WATER QUALITY DATA
21AWIC43 samples · 2021–2024
Monitoring station identifiers (1)
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
Named boat-access points from the USGS National Boat Ramps inventory