Grayton Lake Middle
Grayton Lake Middle in Walton County, Florida has a water quality grade of B (Good). Water clarity: 5 ft visibility. Phosphorus: 13 µg/L.
- Clarity
- 5 ft
- Typical in August
- 89°F
- Type
- Mesotrophic
- Trend
- → Stable
- Public access
- Yes
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Grayton Lake Middle is a mesotrophic lake in Walton County, Florida. Water quality is graded B based on 1 sampling years through 2025. Water clarity is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 83 other monitored lakes in Walton County, Grayton Lake Middle ranks #14 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-02-15. Grade methodology: LakeQuality methodology.
Watch Grayton Lake Middle water quality
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Swimming Safety
Grade onlyBacteria advisory
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 5 ft. Phosphorus level: 13 µg/L. Trophic State Index: 48.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5 ft | Not graded |
| Phosphorus | 13 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Grayton Lake Middle
Compare lakeside cabins, hotels, and vacation rentals near Grayton Lake Middle 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 Grayton Lake Middle
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Water Temperature
Grayton Lake Middle typically sits around 89°F at the surface in August. Summer average is about 87°F. Usually warmest in Aug (about 89°F) and coldest in Jan (about 61°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 391 field readings (2010–2025) via the EPA Water Quality Portal. See the full Grayton Lake Middle water temperature breakdown →
Recreation & Access
- Western Lake Public Boat RampPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Grayton Lake Middle
Water Quality Trend: → Stable
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.2 m/yr | 5 |
| Phosphorus | ↑ Improving | -0.3 µg/L/yr | 5 |
EPA Impairment Status
Grayton Lake Middle 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 FL8010B · Official waterbody report · Matched by proximity (0.87 km)
County Ranking
Ranked #14 of 84 lakes in Walton County
Nearby Lakes in Walton County
Frequently asked questions about Grayton Lake Middle
Where is Grayton Lake Middle?
- Grayton Lake Middle is a lake in Walton County, Florida. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Grayton Lake Middle?
- Grayton Lake Middle in Walton County, Florida has a water quality grade of B (Good). Water clarity: 5 ft visibility. Phosphorus: 13 µg/L.
Is Grayton Lake Middle safe to swim in?
- Good for swimming, clear water with low algae levels. Grayton Lake Middle has a water quality grade of B (Good). Always check local health department advisories before swimming.
What is the water temperature of Grayton Lake Middle?
- Grayton Lake Middle typically sits around 89°F at the surface in August, from 391 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.
Are there boat ramps on Grayton Lake Middle?
- Grayton Lake Middle has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Western Lake Public Boat Ramp. Public access is listed as yes.
Explore Grayton Lake Middle across LakeQuality
More Florida Lake Rankings
Other Grade B Lakes in Florida
Mesotrophic Lakes in Florida
Where this data comes from
117 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- CHOCTAWHATCHEE BASIN ALLIANCE
21FLCBA_WQX117 samples · 2020–2025
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