What is the water quality grade for Highlands-Annie Lake?

Highlands-Annie Lake in Highlands County, Florida received a water quality grade of B (Good). Water clarity: 7 ft visibility. Phosphorus: 9 µg/L.

Is Highlands-Annie Lake safe to swim in?

Good for swimming, clear water with low algae levels. Highlands-Annie Lake has an overall water quality grade of B. Always check local health department advisories before swimming.

Highlands-Annie Lake

Highlands County, FloridaMesotrophic

Highlands-Annie Lake is a mesotrophic lake in Highlands County, Florida. Water quality is graded B based on 2 sampling years through 2025. Compared to the 149 other monitored lakes in Highlands County, Highlands-Annie Lake ranks #25 for water quality.

Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-04-16. Grade methodology: LakeGrade methodology.

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Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Moderate clarity, visible to about 7 ft. Phosphorus level: 9 µg/L. Trophic State Index: 42.

Metric	Value	Grade
Water Clarity (Secchi Depth)	7 ft	C
Phosphorus	9 µg/L	A
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	42	Mesotrophic

Moderate nutrients, good water quality

Location

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County Ranking

Ranked #25 of 150 lakes in Highlands County

Cleaner Lakes Within 30 Miles

Highlands-Annie Lake holds Grade B. 2 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Highlands County

Lake Annie

Highlands County

Highlands-Placid Lake

More Florida Lake Rankings

Cleanest lakes in Florida

Top 25 by overall water quality score

Best swimming lakes in Florida

Grade A/B + low algae filter

Family fishing lakes in Florida

Panfish-rich, public access

All Florida lakes

Full state directory

Other Grade B Lakes in Florida

Bay-Deer Point Lake

Bay County · Clarity: 4 ft

Brevard-Clear Lake

Brevard County · Clarity: 9.8 ft

Alachua-Santa Fe Painter Canal Lake

Alachua County · Clarity: 5.5 ft

Seminole-Little Howell Lake

Seminole County · Clarity: 5 ft

Marion-Deerback Lake

Marion County · Clarity: 7 ft

Hillsborough-Flynn Lake

Hillsborough County · Clarity: 6 ft

Mesotrophic Lakes in Florida

Bay-Deer Point Lake Brevard-Clear Lake Marion-Deerback Lake Hillsborough-Flynn Lake

Lake Size & Watershed

Watershed (drainage) area

8 sq mi

Surface area

74 acres

Mean depth (est.)

6.9 ft

Shoreline

1.3 mi

Elevation

112 ft

Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.

Data Sources

Water quality data from the EPA Water Quality Portal

Lake size & watershed from HydroLAKES (HydroSHEDS)

Grading methodology based on Metropolitan Council standards

Most recent sample: 2025-04-16

Monitoring stations: 3

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