Walton-Oyster Lake
Walton-Oyster Lake in Walton County, Florida has a water quality grade of D (Nutrient-rich). Water clarity: 2.8 ft visibility. Phosphorus: 72 µg/L.
- Clarity
- 2.8 ft
- Type
- Eutrophic
- Trend
- ↑ Improving
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Walton-Oyster Lake →
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Walton-Oyster Lake is a productive, nutrient-rich eutrophic lake in Walton County, Florida. Water quality is graded D based on 1 sampling years through 2022. Overall water quality is improving over recent sampling years. Compared to the 83 other monitored lakes in Walton County, Walton-Oyster Lake ranks #82 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2022-04-22. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyElevated nutrients
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.
Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum
Water Quality Grade: D (Nutrient-rich)
Very murky, less than 2.8 ft of visibility. Phosphorus level: 72 µg/L. Trophic State Index: 64.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.8 ft | Not graded |
| Phosphorus | 72 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 64 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Walton-Oyster Lake
Compare lakeside cabins, hotels, and vacation rentals near Walton-Oyster 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. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Walton-Oyster Lake are listed below.
Top-rated places to stay near Walton-Oyster Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Florida’s top lakes →
Fishing Walton-Oyster Lake
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.05 m/yr | 5 |
| Phosphorus | ↑ Improving | -0.55 µg/L/yr | 5 |
EPA Impairment Status
Walton-Oyster Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL959C · Official waterbody report · Matched by proximity (0.15 km)
County Ranking
Ranked #82 of 84 lakes in Walton County
Nearby Lakes With Higher Grades
Walton-Oyster Lake holds Grade D. 3 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
See full comparison →Nearby Lakes in Walton County
Frequently asked questions about Walton-Oyster Lake
Where is Walton-Oyster Lake?
- Walton-Oyster Lake is a lake in Walton County, Florida. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Walton-Oyster Lake?
- Walton-Oyster Lake in Walton County, Florida has a water quality grade of D (Nutrient-rich). Water clarity: 2.8 ft visibility. Phosphorus: 72 µg/L.
Is Walton-Oyster Lake safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Walton-Oyster Lake has a water quality grade of D (Nutrient-rich). Always check local health department advisories before swimming.
Explore Walton-Oyster Lake across LakeQuality
More Florida Lake Rankings
Other Grade D Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
185 measurements from 4 monitoring stations, 2020–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX185 samples · 2020–2022
Monitoring station identifiers (4)
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