Putnam-Rosa Lake
Putnam-Rosa Lake in Putnam County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar.
- Trend
- ↑ Improving
Next lake in Putnam County
Swipe left or right on this bar to open the next or previous lake.
Why Putnam-Rosa Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Putnam-Rosa Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by FDEP and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Putnam-Rosa Lake is a lake in Putnam County, Florida. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-04-20. Grade methodology: LakeQuality methodology.
Watch Putnam-Rosa Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Putnam-Rosa Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
Where to stay near Putnam-Rosa Lake
Compare lakeside cabins, hotels, and vacation rentals near Putnam-Rosa 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 Putnam-Rosa Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Florida’s top lakes →
Fishing Putnam-Rosa Lake
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.075 m/yr | 5 |
| Phosphorus | ↑ Improving | -16.3 µg/L/yr | 5 |
EPA Impairment Status
Putnam-Rosa Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit FL2543F · Official waterbody report · Matched by proximity (1.53 km)
Graded lakes near Putnam-Rosa Lake
Putnam-Rosa Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Putnam County
Frequently asked questions about Putnam-Rosa Lake
Where is Putnam-Rosa Lake?
- Putnam-Rosa Lake is a lake in Putnam County, Florida. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Putnam-Rosa Lake?
- Putnam-Rosa Lake in Putnam County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar.
Is Putnam-Rosa Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Putnam-Rosa Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Putnam-Rosa Lake across LakeQuality
More Florida Lake Rankings
Other Lakes in Florida
Where this data comes from
9 measurements from 3 monitoring stations, 2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX9 samples · 2025
Monitoring station identifiers (3)
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