What is the water quality grade for M of Lower Dianne Lake?

M of Lower Dianne Lake in Leon County, Florida received a water quality grade of D (Poor). Water clarity: 1.3 ft visibility. Phosphorus: 44 µg/L.

Is M of Lower Dianne Lake safe to swim in?

Swimming not recommended, poor water quality with high algae risk. M of Lower Dianne Lake has an overall water quality grade of D. Always check local health department advisories before swimming.

M of Lower Dianne Lake

Leon County, FloridaEutrophic

M of Lower Dianne Lake is a productive, nutrient-rich eutrophic lake in Leon County, Florida. Water quality is graded D based on 2 sampling years through 2025. Compared to the 126 other monitored lakes in Leon County, M of Lower Dianne Lake ranks #99 for water quality.

Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-06-25. Grade methodology: LakeGrade methodology.

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Swimming Safety

Swimming not recommended, poor water quality with high algae risk

Water Quality Grade: D, Poor

Very murky, less than 1.3 ft of visibility. Phosphorus level: 44 µg/L. Trophic State Index: 66.

Metric	Value	Grade
Water Clarity (Secchi Depth)	1.3 ft	F
Phosphorus	44 µg/L	C
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	66	Eutrophic

High nutrients, frequent algae, reduced clarity

Location

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County Ranking

Ranked #99 of 127 lakes in Leon County

Cleaner Lakes Within 30 Miles

M of Lower Dianne Lake holds Grade D. 4 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Leon County

More Florida Lake Rankings

Cleanest lakes in Florida

Top 25 by overall water quality score

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Grade A/B + low algae filter

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Panfish-rich, public access

All Florida lakes

Full state directory

Other Grade D Lakes in Florida

Flagler-Emerald Lake

Flagler County · Clarity: 1.8 ft

Ftt Lake

Indian River County · Clarity: 2.3 ft

Lake Orlando East

Orange County · Clarity: 2 ft

Lake Rowena

Orange County · Clarity: 3 ft

Lake G

Orange County · Clarity: 2 ft

Putnam-Suggs Lake

Putnam County · Clarity: 2 ft

Eutrophic Lakes in Florida

Lake Lancaster West Flagler-Emerald Lake Eastern Lake Outlet Seminole-Secret Lake

Lake Size & Watershed

Watershed (drainage) area

1 sq mi

Surface area

44 acres

Mean depth (est.)

9.5 ft

Shoreline

1.5 mi

Elevation

190 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: 2025-06-25

Monitoring stations: 1

Where to stay near M of Lower Dianne Lake

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