Lake Chautauqua
Lake Chautauqua in Pinellas County, Florida has a water quality grade of B (Good). Water clarity: 4.3 ft visibility. Phosphorus: 10 µg/L.
- Clarity
- 4.3 ft
- Typical in August
- 88°F
- Type
- Mesotrophic
- Trend
- ↑ Improving
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Lake Chautauqua is a mesotrophic lake in Pinellas County, Florida. Water quality is graded B based on 1 sampling years through 2024. Overall water quality is improving over recent sampling years. Compared to the 33 other monitored lakes in Pinellas County, Lake Chautauqua ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2024-12-03. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyBacteria C · advisory
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.
Based on E. coli testing, Lake Chautauqua occasionally exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 7.4% of 54 samples across 7 seasons.
This is a historical summary of past testing, not a current condition — bacteria levels change quickly, especially after rain. Always check Florida’s current beach and health-department advisories before swimming.
Water Quality Grade: B (Good)
Murky, only visible to about 4.3 ft. Phosphorus level: 10 µg/L. Trophic State Index: 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.3 ft | Not graded |
| Phosphorus | 10 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Lake Chautauqua
Compare lakeside cabins, hotels, and vacation rentals near Lake Chautauqua in Pinellas 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 Chautauqua
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Water Temperature
Lake Chautauqua typically sits around 88°F at the surface in August. Summer average is about 88°F. Usually warmest in Jun (about 88°F) and coldest in Jan (about 60°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 318 field readings (2010–2024) via the EPA Water Quality Portal. See the full Lake Chautauqua water temperature breakdown →
Fishing Lake Chautauqua
Water Quality Trend: ↑ Improving
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.139 m/yr | 6 |
| Phosphorus | ↑ Improving | -2.71 µg/L/yr | 6 |
EPA Impairment Status
Lake Chautauqua is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL1575A · Official waterbody report · Matched by proximity (1.85 km)
County Ranking
Ranked #2 of 34 lakes in Pinellas County
Nearby Lakes in Pinellas County
Frequently asked questions about Lake Chautauqua
Where is Lake Chautauqua?
- Lake Chautauqua is a lake in Pinellas County, Florida. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Chautauqua?
- Lake Chautauqua in Pinellas County, Florida has a water quality grade of B (Good). Water clarity: 4.3 ft visibility. Phosphorus: 10 µg/L.
Is Lake Chautauqua safe to swim in?
- Based on E. coli testing, Lake Chautauqua occasionally exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 7.4% of 54 samples across 7 seasons. That works out to a bacteria swim-safety grade of C — a historical summary of past testing, not a current reading. Lake Chautauqua has a water quality grade of B (Good). Bacteria levels can spike quickly after heavy rain, so always check Florida's current beach and health-department advisories before you swim.
What is the water temperature of Lake Chautauqua?
- Lake Chautauqua typically sits around 88°F at the surface in August, from 318 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
Explore Lake Chautauqua across LakeQuality
More Florida Lake Rankings
Other Grade B Lakes in Florida
Hillsborough County · 6.2 ft
Hillsborough County · 4.3 ft
Hillsborough County · 9 ft
Hillsborough County · 7 ft
Hillsborough County · 9 ft
Hillsborough County · 4.3 ft
Mesotrophic Lakes in Florida
Where this data comes from
75 measurements from 1 monitoring station, 2020–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples75 samples · 2020–2024
Monitoring station identifiers (1)
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