Lake Stallworth Outlet
Lake Stallworth Outlet in Walton County, Florida has a water quality grade of B (Good). Water clarity: 2.6 ft visibility. Phosphorus: 18 µg/L.
- Clarity
- 2.6 ft
- Typical in August
- 88°F
- Type
- Eutrophic
- Trend
- → Stable
Next lake in Walton County
Swipe left or right on this bar to open the next or previous lake.
Lake Stallworth Outlet is a productive, nutrient-rich eutrophic lake in Walton County, Florida. Water quality is graded B based on 1 sampling years through 2025. Compared to the 83 other monitored lakes in Walton County, Lake Stallworth Outlet ranks #64 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-01-30. Grade methodology: LakeQuality methodology.
Watch Lake Stallworth Outlet water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
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)
Very murky, less than 2.6 ft of visibility. Phosphorus level: 18 µg/L. Trophic State Index: 55.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.6 ft | Not graded |
| Phosphorus | 18 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 55 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lake Stallworth Outlet
Compare lakeside cabins, hotels, and vacation rentals near Lake Stallworth Outlet 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 Lake Stallworth Outlet
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 →
Water Temperature
Lake Stallworth Outlet typically sits around 88°F at the surface in August. Summer average is about 87°F. Usually warmest in Aug (about 88°F) and coldest in Jan (about 58°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 289 field readings (2010–2025) via the EPA Water Quality Portal. See the full Lake Stallworth Outlet water temperature breakdown →
Fishing Lake Stallworth Outlet
Water Quality Trend: → Stable
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.05 m/yr | 5 |
| Phosphorus | → Stable | -0.35 µg/L/yr | 5 |
EPA Impairment Status
Lake Stallworth Outlet 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 FL959B · Official waterbody report · Matched by proximity (0.1 km)
County Ranking
Ranked #64 of 84 lakes in Walton County
Nearby Lakes in Walton County
Frequently asked questions about Lake Stallworth Outlet
Where is Lake Stallworth Outlet?
- Lake Stallworth Outlet 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 Lake Stallworth Outlet?
- Lake Stallworth Outlet in Walton County, Florida has a water quality grade of B (Good). Water clarity: 2.6 ft visibility. Phosphorus: 18 µg/L.
Is Lake Stallworth Outlet safe to swim in?
- Good for swimming, clear water with low algae levels. Lake Stallworth Outlet has a water quality grade of B (Good). Always check local health department advisories before swimming.
What is the water temperature of Lake Stallworth Outlet?
- Lake Stallworth Outlet typically sits around 88°F at the surface in August, from 289 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.
Explore Lake Stallworth Outlet across LakeQuality
More Florida Lake Rankings
Other Grade B Lakes in Florida
Eutrophic Lakes in Florida
Where this data comes from
99 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_WQX99 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