Hillsborough-Maurine Lake
Hillsborough County, FloridaEutrophic
Hillsborough-Maurine Lake is a productive, nutrient-rich eutrophic lake in Hillsborough County, Florida. Water quality is graded C based on 2 sampling years through 2025. Compared to the 221 other monitored lakes in Hillsborough County, Hillsborough-Maurine Lake ranks #82 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-03-22. Grade methodology: LakeGrade methodology.
Watch Hillsborough-Maurine Lake water quality
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 4.3 ft. Phosphorus level: 20 µg/L. Trophic State Index: 52.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.3 ft | D |
| Phosphorus | 20 µg/L | B |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 52 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #82 of 222 lakes in Hillsborough County
Cleaner Lakes Within 30 Miles
Hillsborough-Maurine Lake holds Grade C. 4 nearby lakes hold higher grades.
- AHillsborough-Grace LakeHillsborough County · 0.6 mi · Two grade letters higher (C → A)
- BHillsborough-Echo LakeHillsborough County · 1.7 mi · Higher grade (C → B)
- BWillamsctr LakeHillsborough County · 1.3 mi · Higher grade (C → B)
- BHillsborough-Church LakeHillsborough County · 1.4 mi · Higher grade (C → B)
Nearby Lakes in Hillsborough County
More Florida Lake Rankings
Other Grade C Lakes in Florida
Orange County · Clarity: 3.5 ft
Walton County · Clarity: 4.2 ft
Seminole County · Clarity: 4.5 ft
Seminole County · Clarity: 2.9 ft
Polk County · Clarity: 3.5 ft
Volusia County · Clarity: 4.5 ft
Eutrophic Lakes in Florida
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
2 EPA-permitted facilities operate within about 5 miles of Hillsborough-Maurine Lake 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.
- Northwest Regional WrfTampa · 1.8 mi away · NPDES FL0041670MajorRecent violation
- River Oaks Wastewater Treatment PlantTampa · 4.1 mi away · NPDES FL0027821Major
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)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-03-22
Monitoring stations: 3
Where to stay near Hillsborough-Maurine Lake
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