Walton-Big Red Fish Lake
Walton County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Walton-Big Red Fish Lake. Here is what has been measured.
- Eutrophic
Walton-Big Red Fish Lake in Walton County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 3.4 ft visibility. Phosphorus: 23.5 µg/L.
Walton-Big Red Fish Lake is a productive, nutrient-rich eutrophic lake in Walton County, Florida. Water clarity is declining over recent sampling years. Compared to the 83 other monitored lakes in Walton County, Walton-Big Red Fish Lake ranks #46 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2022-04-12. Methodology: how these readings are compared.
Swimming conditions
Readings onlyLow algae
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Walton-Big Red Fish Lake is safe to swim in today is a call for the Florida Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Walton-Big Red Fish Lake
These are the measurements Florida DEP publishes for Walton-Big Red Fish Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 3.4 ft. Phosphorus 23.5 µg/L. TSI 55.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.4ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 23.5µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 55 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Walton-Big Red Fish Lake
Water Quality Trend: Stable
Based on 5 years of monitoring (2020–2024).
Water clarity
Worsening5 years
Phosphorus
Improving-1.7 µg/L/yr5 years
Nearby Lakes in Walton County
Frequently asked questions about Walton-Big Red Fish Lake
Where is Walton-Big Red Fish Lake?
- Walton-Big Red Fish Lake is a lake in Walton County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Walton-Big Red Fish Lake?
- Walton-Big Red Fish Lake in Walton County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 3.4 ft visibility. Phosphorus: 23.5 µg/L.
Is Walton-Big Red Fish Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Walton-Big Red Fish Lake across LakeQuality
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Eutrophic Lakes in Florida
Where this data comes from
168 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_WQX168 samples · 2020–2022
Monitoring station identifiers (3)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.