Blue Sink Lake
Hernando County, FloridaEutrophic
Blue Sink Lake is a productive, nutrient-rich eutrophic lake in Hernando County, Florida. Water quality is graded F based on 2 sampling years through 2025. Compared to the 22 other monitored lakes in Hernando County, Blue Sink Lake ranks #23 for water quality.
Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-02-05. 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 2.3 ft of visibility. Phosphorus level: 112.5 µg/L. Trophic State Index: 69.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.3 ft | F |
| Phosphorus | 112.5 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 69 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Location
County Ranking
Ranked #23 of 23 lakes in Hernando County
Cleaner Lakes Within 30 Miles
Blue Sink Lake holds Grade F. 5 nearby lakes hold higher grades.
- BTank LakeHernando County · 4.4 mi · Two grade letters higher (F → B)
- CHernando-Bystre LakeHernando County · 4.7 mi · Two grade letters higher (F → C)
- CLindsey LakeHernando County · 2 mi · Two grade letters higher (F → C)
- CMckethan Lake EastHernando County · 2.5 mi · Two grade letters higher (F → C)
- CMckethan LakeHernando County · 2.6 mi · Two grade letters higher (F → C)
Nearby Lakes in Hernando County
More Florida Lake Rankings
Other Grade F Lakes in Florida
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: 2025-02-05
Monitoring stations: 1
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