Lake Roberta
Hillsborough County, FloridaHypereutrophic
Lake Roberta is a highly nutrient-loaded hypereutrophic lake in Hillsborough County, Florida. Water quality is graded F based on 2 sampling years through 2023. Compared to the 221 other monitored lakes in Hillsborough County, Lake Roberta ranks #175 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2023-08-09. Grade methodology: LakeGrade methodology.
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Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 1.3 ft of visibility. Phosphorus level: 116 µg/L. Trophic State Index: 73.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.3 ft | F |
| Phosphorus | 116 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 73 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Location
County Ranking
Ranked #175 of 222 lakes in Hillsborough County
Cleaner Lakes Within 30 Miles
Lake Roberta holds Grade F. 3 nearby lakes hold higher grades.
- BHillsborough-Egypt LakeHillsborough County · 2.7 mi · Two grade letters higher (F → B)
- CHillsborough-Silver LakeHillsborough County · 3.1 mi · Two grade letters higher (F → C)
- CEgypt Lake @ CenterHillsborough County · 2.8 mi · Two grade letters higher (F → C)
Nearby Lakes in Hillsborough County
More Florida Lake Rankings
Other Grade F Lakes in Florida
Polk County · Clarity: 1.3 ft
Polk County · Clarity: 1 ft
Alachua County · Clarity: 2.4 ft
Volusia County · Clarity: 2 ft
Brevard County · Clarity: 1.6 ft
Highlands County · Clarity: 1 ft
Hypereutrophic Lakes in Florida
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.
Data Sources
Water quality data from the EPA Water Quality Portal
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2023-08-09
Monitoring stations: 1
Where to stay near Lake Roberta
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