Lake Roberta
Hillsborough County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Lake Roberta. Here is what has been measured.
- Hypereutrophic
- Public access
Lake Roberta in Hillsborough County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 1.3 ft visibility. Phosphorus: 116 µg/L.
Lake Roberta is a highly nutrient-loaded hypereutrophic lake in Hillsborough County, Florida. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available. Compared to the 123 other monitored lakes in Hillsborough County, Lake Roberta ranks #92 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2023-08-09. Methodology: how these readings are compared.
Swimming conditions
Readings onlyBacteria tested: exceedances
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 Roberta routinely exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 64.7% of 51 samples across 6 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 Roberta 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 Roberta
These are the measurements Florida DEP publishes for Lake Roberta, 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 1.3 ft of visibility. Phosphorus 116 µg/L. TSI 73.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1.3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 116µg/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. | 73 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Lake Roberta
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Lake Roberta typically sits around 81°F at the surface in October. Summer average is about 86°F. Usually warmest in Jul (about 87°F) and coldest in Jan (about 64°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (64°F) to its warmest (87°F).
Typical surface water temperature by month, from 146 field readings (2018–2023) via the EPA Water Quality Portal. See the full Lake Roberta water temperature breakdown →
Stays via Stay22
Stays near Lake Roberta
Compare lakeside cabins, hotels, and vacation rentals near Lake Roberta 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 Roberta are listed below.
Top-rated places to stay near Lake Roberta
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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Planning a whole trip? See where to stay at Florida’s top lakes →
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Fishing Lake Roberta
Water Quality Trend: Worsening
Based on 4 years of monitoring (2020–2023).
Water clarity
Worsening4 years
Phosphorus
Worsening+2.55 µg/L/yr4 years
Regulated Pollution Sources Nearby
5 EPA-permitted facilities operate within about 5 miles of Lake Roberta under Clean Water Act (NPDES) discharge permits, including 2 classified by the EPA as major dischargers. 1 facility has a reported Clean Water Act violation in the past three years.
- Hillsborough Co & Co App - MS4Tampa · 3.3 mi away · NPDES FLS000006Major
- Tampa - MS4Tampa · 3.7 mi away · NPDES FLS000008Major
- Seaworld Parks Entertainment Llc - Busch GardensTampa · 3.1 mi away · NPDES FL0185833Recent violation
- Buckeye Terminals, Llc - Tampa North TerminalTampa · 3.5 mi away · NPDES FL0034622
- Mplx Terminals, Llc - Tampa TerminalTampa · 3.8 mi away · NPDES FL0037702
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Nearby Lakes in Hillsborough County
Frequently asked questions about Lake Roberta
Where is Lake Roberta?
- Lake Roberta 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 Roberta?
- Lake Roberta in Hillsborough County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 1.3 ft visibility. Phosphorus: 116 µg/L.
Is Lake Roberta safe to swim in?
- Based on E. coli testing, Lake Roberta routinely exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 64.7% of 51 samples across 6 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 Roberta 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 Roberta?
- Lake Roberta typically sits around 81°F at the surface in October, from 146 EPA Water Quality Portal field readings (2018–2023). That is a typical value for the month, not a live reading.
Can I fish at Lake Roberta?
- Public access to Lake Roberta is listed as yes on the lake record. Seasons, size and bag limits, and whether you need a license are set by Florida's fish and wildlife agency, so check its current regulations before you go.
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Where this data comes from
84 measurements from 1 monitoring station, 2020–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples84 samples · 2020–2023
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.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)