Hillsborough-Dosson Lake
Hillsborough County, FloridaEutrophic
Hillsborough-Dosson 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-Dosson Lake ranks #113 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-05-01. Grade methodology: LakeGrade methodology.
Watch Hillsborough-Dosson Lake water quality
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Very murky, less than 3.3 ft of visibility. Phosphorus level: 28 µg/L. Trophic State Index: 56.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.3 ft | D |
| Phosphorus | 28 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 56 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #113 of 222 lakes in Hillsborough County
Cleaner Lakes Within 30 Miles
Hillsborough-Dosson Lake holds Grade C. 3 nearby lakes hold higher grades.
- BHillsborough-Leclare LakeHillsborough County · 1.2 mi · Higher grade (C → B)
- BHillsborough-Starvation LakeHillsborough County · 1.2 mi · Higher grade (C → B)
- CLkhelenctr LakeHillsborough County · 0.8 mi · Higher overall water quality score
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
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-05-01
Monitoring stations: 3
Where to stay near Hillsborough-Dosson Lake
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