Tiger Lake
Polk County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Tiger Lake. Here is what has been measured.
- Hypereutrophic
- Impaired · Mercury
Tiger Lake in Polk County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 1 ft visibility. Phosphorus: 135 µg/L.
Tiger Lake is a highly nutrient-loaded hypereutrophic lake in Polk County, Florida. Water clarity is declining over recent sampling years. Compared to the 176 other monitored lakes in Polk County, Tiger Lake ranks #134 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-06-18. Methodology: how these readings are compared.
Swimming conditions
Readings onlyRecreation use not supported
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. Tiger Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Tiger 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 Tiger Lake
These are the measurements Florida DEP publishes for Tiger 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 1 ft of visibility. Phosphorus 135 µg/L. TSI 76.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 135µg/L | Poor 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. | 76 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Tiger Lake
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near Tiger Lake
Compare lakeside cabins, hotels, and vacation rentals near Tiger Lake 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. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Tiger Lake are listed below.
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Fishing Tiger Lake
Water Quality Trend: Stable
Based on 6 years of monitoring (2020–2025).
Water clarity
Worsening6 years
Phosphorus
Improving-15.4 µg/L/yr6 years
EPA Impairment Status
Tiger Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life, Fish consumption, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL1573A · Official waterbody report
Nearby Lakes in Polk County
Frequently asked questions about Tiger Lake
Where is Tiger Lake?
- Tiger 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 Tiger Lake?
- Tiger Lake in Polk County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 1 ft visibility. Phosphorus: 135 µg/L.
Is Tiger Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Tiger Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
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Where this data comes from
92 measurements from 9 monitoring stations, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples82 samples · 2022–2025
- Submitting organization not recorded for these samples10 samples · 2020
Monitoring station identifiers (9)
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.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database