Putnam-Rosa Lake
Putnam County, FloridaLimited DataOligotrophic
Putnam-Rosa Lake is a cold, clear oligotrophic lake in Putnam County, Florida. Water quality is graded A based on 1 sampling years through 2025. Compared to the 67 other monitored lakes in Putnam County, Putnam-Rosa Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-04-20. Grade methodology: LakeGrade methodology.
Watch Putnam-Rosa Lake water quality
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Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 16.8 ft down. Trophic State Index: 36.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 16.8 ft | A |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 36 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Location
County Ranking
Ranked #2 of 68 lakes in Putnam County
Nearby Lakes in Putnam 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
Seminole County · Clarity: 11 ft
Seminole County · Clarity: 13 ft
Orange County · Clarity: 11.5 ft
Oligotrophic 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: 2025-04-20
Monitoring stations: 3
Where to stay near Putnam-Rosa Lake
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