Browsout Lake
Browsout Lake in Putnam County, Florida has a water quality grade of B (Good). Water clarity: 7.7 ft visibility. Phosphorus: 12.5 µg/L.
- Clarity
- 7.7 ft
- Typical in August
- 86°F
- Max depth
- ~38 ft est.
- Type
- Mesotrophic
- Trend
- → Stable
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Browsout Lake is a mesotrophic lake in Putnam County, Florida with an estimated average depth of about 38 feet. Water quality is graded B based on 1 sampling years through 2023. Water clarity is improving over recent sampling years. Compared to the 27 other monitored lakes in Putnam County, Browsout Lake ranks #15 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2023-12-12. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyBacteria A
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.
Based on E. coli testing, Browsout Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 14 samples across 2 seasons.
This is a historical summary of past testing, not a current condition — bacteria levels change quickly, especially after rain. Always check Florida’s current beach and health-department advisories before swimming.
Water Quality Grade: B (Good)
Moderate clarity, visible to about 7.7 ft. Phosphorus level: 12.5 µg/L. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 7.7 ft | Not graded |
| Phosphorus | 12.5 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Browsout Lake
Compare lakeside cabins, hotels, and vacation rentals near Browsout Lake in Putnam 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 Browsout Lake
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Planning a whole trip? See where to stay at Florida’s top lakes →
Water Temperature
Browsout Lake typically sits around 86°F at the surface in August. Summer average is about 84°F. Usually warmest in Aug (about 86°F) and coldest in Jan (about 59°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 42 field readings (2021–2023) via the EPA Water Quality Portal. See the full Browsout Lake water temperature breakdown →
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~38 ft est. |
| Average Depth | ~10 ft est. |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Florida has not published bathymetry for Browsout Lake.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Fishing Browsout Lake
Water Quality Trend: → Stable
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.365 m/yr | 4 |
| Phosphorus | ↓ Declining | +0.55 µg/L/yr | 4 |
EPA Impairment Status
Browsout Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL2617A · Official waterbody report · Matched by proximity (1.21 km)
County Ranking
Ranked #15 of 28 lakes in Putnam County
Nearby Lakes in Putnam County
Frequently asked questions about Browsout Lake
Where is Browsout Lake?
- Browsout Lake is a lake in Putnam County, Florida. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Browsout Lake?
- Browsout Lake in Putnam County, Florida has a water quality grade of B (Good). Water clarity: 7.7 ft visibility. Phosphorus: 12.5 µg/L.
Is Browsout Lake safe to swim in?
- Based on E. coli testing, Browsout Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 14 samples across 2 seasons. That works out to a bacteria swim-safety grade of A — a historical summary of past testing, not a current reading. Browsout Lake has a water quality grade of B (Good). Bacteria levels can spike quickly after heavy rain, so always check Florida's current beach and health-department advisories before you swim.
What is the water temperature of Browsout Lake?
- Browsout Lake typically sits around 86°F at the surface in August, from 42 EPA Water Quality Portal field readings (2021–2023). That is a typical value for the month, not a live reading.
How deep is Browsout Lake?
- No published bathymetric survey covers Browsout Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 38 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Explore Browsout Lake across LakeQuality
Planning a trip around Fort Matanzas?
Browsout Lake is about 26 miles from Fort Matanzas National Monument. Crowds there swing hard by season, so the month you pick changes both how busy the park is and what lodging costs.
Best time to visit Fort Matanzas →More Florida Lake Rankings
Other Grade B Lakes in Florida
Mesotrophic Lakes in Florida
Where this data comes from
30 measurements from 1 monitoring station, 2021–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FL Dept. of Environmental Protection, Northeast District
21FLA_WQX30 samples · 2021–2023
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
Lake size & watershed from HydroLAKES (HydroSHEDS)