Alligator Lake Northside of Bridge
Walton County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Alligator Lake Northside of Bridge. Here is what has been measured.
- Eutrophic
Alligator Lake Northside of Bridge in Walton County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 1.9 ft visibility. Phosphorus: 11 µg/L.
Alligator Lake Northside of Bridge 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, Alligator Lake Northside of Bridge ranks #51 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-01-26. 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 Alligator Lake Northside of Bridge 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 Alligator Lake Northside of Bridge
These are the measurements Florida DEP publishes for Alligator Lake Northside of Bridge, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 1.9 ft of visibility. Phosphorus 11 µg/L. TSI 53.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1.9ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 11µg/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. | 53 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Alligator Lake Northside of Bridge
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Alligator Lake Northside of Bridge typically sits around 75°F at the surface in October. Summer average is about 88°F. Usually warmest in Jun (about 89°F) and coldest in Jan (about 60°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (60°F) to its warmest (89°F).
Typical surface water temperature by month, from 117 field readings (2019–2025) via the EPA Water Quality Portal. See the full Alligator Lake Northside of Bridge water temperature breakdown →
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Stays near Alligator Lake Northside of Bridge
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Fishing Alligator Lake Northside of Bridge
Water Quality Trend: Stable
Based on 5 years of monitoring (2020–2024).
Water clarity
Worsening5 years
Phosphorus
Improving-0.9 µg/L/yr5 years
Nearby Lakes in Walton County
Frequently asked questions about Alligator Lake Northside of Bridge
Where is Alligator Lake Northside of Bridge?
- Alligator Lake Northside of Bridge 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 Alligator Lake Northside of Bridge?
- Alligator Lake Northside of Bridge in Walton County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 1.9 ft visibility. Phosphorus: 11 µg/L.
Is Alligator Lake Northside of Bridge safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Alligator Lake Northside of Bridge?
- Alligator Lake Northside of Bridge typically sits around 75°F at the surface in October, from 117 EPA Water Quality Portal field readings (2019–2025). That is a typical value for the month, not a live reading.
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Where this data comes from
108 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_WQX108 samples · 2020–2025
Monitoring station identifiers (1)
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.