Whistlercn Lake
Polk County, Florida764 acresView mapDirections
Florida DEP publishes the water-quality measurements for Whistlercn Lake. Here is what has been measured.
- Eutrophic
- Limited data
Whistlercn Lake in Polk County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 2 ft visibility. Phosphorus: 15 µg/L. Surface area: 764 acres.
Whistlercn Lake is a 764-acre productive, nutrient-rich eutrophic lake in Polk County, Florida. Water clarity is declining over recent sampling years. Compared to the 176 other monitored lakes in Polk County, Whistlercn Lake ranks #91 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-06-16. Methodology: how these readings are compared.
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Whistlercn Lake 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 Whistlercn Lake
These are the measurements Florida DEP publishes for Whistlercn Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 2 ft of visibility. Phosphorus 15 µg/L. TSI 55.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 15µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 55 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Whistlercn Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Whistlercn Lake typically sits around 77°F at the surface in October. Summer average is about 87°F. Usually warmest in Jul (about 88°F) and coldest in Jan (about 60°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (60°F) to its warmest (88°F).
Typical surface water temperature by month, from 55 field readings (2021–2025) via the EPA Water Quality Portal. See the full Whistlercn Lake water temperature breakdown →
Lake Details
Surface area
764 acres
No bathymetric survey has been published for Whistlercn Lake, so its depth is not documented here.
Stays via Stay22
Stays near Whistlercn Lake
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Fishing Whistlercn Lake
Water Quality Trend: Stable
Based on 6 years of monitoring (2020–2025).
Water clarity
Worsening6 years
Phosphorus
Improving-0.49 µg/L/yr6 years
Reservoir Info (USACE NID)
Whistlercn Lake is a man-made reservoir impounded by the Structure P-3 (completed 1965), built primarily for flood risk reduction on the P-3 Canal; concrete-type dam, 18 ft tall.
- Surface area
- 764 ac
- Normal storage
- 6,112 ac-ft
- Max storage
- 11,460 ac-ft
- Drainage area
- 3.7 sq mi
- Hazard class
- High
- Owner
- SWFWMD
Source: USACE National Inventory of Dams, NID ID FL12011 · Operator website · Matched by proximity (0.31 km)
Nearby Lakes in Polk County
Frequently asked questions about Whistlercn Lake
Where is Whistlercn Lake?
- Whistlercn Lake 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 Whistlercn Lake?
- Whistlercn Lake in Polk County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 2 ft visibility. Phosphorus: 15 µg/L. Surface area: 764 acres.
Is Whistlercn Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Whistlercn Lake?
- Whistlercn Lake typically sits around 77°F at the surface in October, from 55 EPA Water Quality Portal field readings (2021–2025). That is a typical value for the month, not a live reading.
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Where this data comes from
44 measurements from 1 monitoring station, 2021–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples44 samples · 2021–2025
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.