Lake Carroll Middle
Hillsborough County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Lake Carroll Middle. Here is what has been measured.
- Eutrophic
- Limited data
Lake Carroll Middle in Hillsborough County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Phosphorus: 68 µg/L.
Lake Carroll Middle is a productive, nutrient-rich eutrophic lake in Hillsborough County, Florida. Overall water quality is declining over recent sampling years. Compared to the 123 other monitored lakes in Hillsborough County, Lake Carroll Middle ranks #115 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-07-08. Methodology: how these readings are compared.
Swimming conditions
Readings onlyBacteria tested: low
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.
Based on E. coli testing, Lake Carroll Middle never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 21 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.
Whether Lake Carroll Middle 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 Carroll Middle
These are the measurements Florida DEP publishes for Lake Carroll Middle, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 68 µg/L. TSI 65.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 68µg/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. | 65 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lake Carroll Middle
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Lake Carroll Middle typically sits around 82°F at the surface in October. Summer average is about 88°F. Usually warmest in Jul (about 88°F) and coldest in Jan (about 62°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (62°F) to its warmest (88°F).
Typical surface water temperature by month, from 25 field readings (2019–2025) via the EPA Water Quality Portal. See the full Lake Carroll Middle water temperature breakdown →
Stays via Stay22
Stays near Lake Carroll Middle
Compare lakeside cabins, hotels, and vacation rentals near Lake Carroll Middle in Hillsborough 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 Lake Carroll Middle are listed below.
Top-rated places to stay near Lake Carroll Middle
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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Fishing Lake Carroll Middle
Water Quality Trend: Worsening
Based on 6 years of monitoring (2020–2025).
Water clarity
Worsening6 years
Phosphorus
Worsening+5.19 µg/L/yr6 years
Nearby Lakes in Hillsborough County
Frequently asked questions about Lake Carroll Middle
Where is Lake Carroll Middle?
- Lake Carroll Middle is a lake in Hillsborough 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 Carroll Middle?
- Lake Carroll Middle in Hillsborough County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Phosphorus: 68 µg/L.
Is Lake Carroll Middle safe to swim in?
- Based on E. coli testing, Lake Carroll Middle never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 21 samples across 7 seasons. That is a historical summary of past bacteria testing, not a current reading and not a swimming clearance. Bacteria levels can spike quickly after heavy rain, so whether Lake Carroll Middle is safe to swim in today is a call for Florida's water agency and the county health department; check their current beach advisories before you swim.
What is the water temperature of Lake Carroll Middle?
- Lake Carroll Middle typically sits around 82°F at the surface in October, from 25 EPA Water Quality Portal field readings (2019–2025). That is a typical value for the month, not a live reading.
Explore Lake Carroll Middle across LakeQuality
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Where this data comes from
21 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples21 samples · 2020–2025
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.