Lake Rosalie
Polk County, FloridaView mapDirections
No nutrient or algae sampling on record from Florida DEP for this lake.
- Limited data
Lake Rosalie in Polk County, Florida has water-quality measurements published by Florida DEP, shown here as reported.
Lake Rosalie is a lake in Polk County, Florida. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-02-11. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lake Rosalie 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 Lake Rosalie
These are the measurements Florida DEP publishes for Lake Rosalie, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data.
Ask about Lake Rosalie
Answers come straight from the public measurements and survey records on this page.
→ Lake Rosalie water level: the live USGS gauge reading
Stays via Stay22
Stays near Lake Rosalie
Compare lakeside cabins, hotels, and vacation rentals near Lake Rosalie in Polk 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 Lake Rosalie
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Follow Lake Rosalie’s readings
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Fishing Lake Rosalie
Water Quality Trend: Worsening
Based on 6 years of monitoring (2020–2025).
Water clarity
Worsening6 years
Phosphorus
Worsening+3.44 µg/L/yr6 years
Nearby Lakes in Polk County
Frequently asked questions about Lake Rosalie
Where is Lake Rosalie?
- Lake Rosalie is a lake in Polk County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Lake Rosalie?
- Lake Rosalie in Polk County, Florida has water-quality measurements published by Florida DEP, shown here as reported.
Is Lake Rosalie safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Lake Rosalie across LakeQuality
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Where this data comes from
2 measurements from 1 monitoring station, 2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples2 samples · 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.