Polk-Daisy Lake
Polk-Daisy Lake in Polk County, Florida has a water quality grade of B (Good). Water clarity: 7 ft visibility. Phosphorus: 19.5 µg/L.
- Clarity
- 7 ft
- Type
- Mesotrophic
- Trend
- ↓ Declining
- Public access
- Yes
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Polk-Daisy Lake is a mesotrophic lake in Polk County, Florida. Water quality is graded B based on 1 sampling years through 2025. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 176 other monitored lakes in Polk County, Polk-Daisy Lake ranks #29 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-04-23. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyLow algae
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.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
Moderate clarity, visible to about 7 ft. Phosphorus level: 19.5 µg/L. Trophic State Index: 48.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 7 ft | Not graded |
| Phosphorus | 19.5 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Polk-Daisy Lake
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Recreation & Access
- Lake Daisy Public Boat RampPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Polk-Daisy Lake
Water Quality Trend: ↓ Declining
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.133 m/yr | 6 |
| Phosphorus | → Stable | -0.09 µg/L/yr | 6 |
County Ranking
Ranked #29 of 177 lakes in Polk County
Nearby Lakes in Polk County
Frequently asked questions about Polk-Daisy Lake
Where is Polk-Daisy Lake?
- Polk-Daisy Lake is a lake in Polk County, Florida. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Polk-Daisy Lake?
- Polk-Daisy Lake in Polk County, Florida has a water quality grade of B (Good). Water clarity: 7 ft visibility. Phosphorus: 19.5 µg/L.
Is Polk-Daisy Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Polk-Daisy Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
Are there boat ramps on Polk-Daisy Lake?
- Polk-Daisy Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Daisy Public Boat Ramp. Public access is listed as yes.
Explore Polk-Daisy Lake across LakeQuality
More Florida Lake Rankings
Other Grade B Lakes in Florida
Mesotrophic Lakes in Florida
Where this data comes from
211 measurements from 3 monitoring stations, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX211 samples · 2020–2025
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
Named boat-access points from the USGS National Boat Ramps inventory