Lake Brantley
Seminole County, FloridaMesotrophic
Lake Brantley is a mesotrophic lake in Seminole County, Florida. Water quality is graded A based on 2 sampling years through 2025. Compared to the 167 other monitored lakes in Seminole County, Lake Brantley ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-04-01. Grade methodology: LakeGrade methodology.
Watch Lake Brantley water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Moderate clarity, visible to about 9.5 ft. Phosphorus level: 11.5 µg/L. Trophic State Index: 42.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9.5 ft | B |
| Phosphorus | 11.5 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 42 | Mesotrophic |
Moderate nutrients, good water quality
Location
County Ranking
Ranked #5 of 168 lakes in Seminole County
Nearby Lakes in Seminole County
More Florida Lake Rankings
Other Grade A Lakes in Florida
Highlands County · Clarity: 16 ft
Walton County · Clarity: 9 ft
Highlands County · Clarity: 13.2 ft
Orange County · Clarity: 11.5 ft
Volusia County · Clarity: 14 ft
Bay County · Clarity: 14 ft
Mesotrophic Lakes in Florida
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Data Sources
Water quality data from the EPA Water Quality Portal
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-04-01
Monitoring stations: 1
Where to stay near Lake Brantley
Compare lakeside cabins, hotels, and vacation rentals near Lake Brantley in Seminole County, Florida — live availability and prices for your trip.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.