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F

Seminole-Howell Lake

Seminole County, FloridaEutrophic

Seminole-Howell Lake is a productive, nutrient-rich eutrophic lake in Seminole County, Florida. Water quality is graded F based on 2 sampling years through 2023. Compared to the 167 other monitored lakes in Seminole County, Seminole-Howell Lake ranks #163 for water quality.

Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2023-06-17. 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 ft of visibility. Phosphorus level: 100 µg/L. Trophic State Index: 69.

MetricValueGrade
Water Clarity (Secchi Depth)2 ftF
Phosphorus100 µg/LF
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)69Eutrophic

High nutrients, frequent algae, reduced clarity

Location

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County Ranking

Ranked #163 of 168 lakes in Seminole County

Cleaner Lakes Within 30 Miles

Seminole-Howell Lake holds Grade F. 5 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Seminole County

D
Lakehwell
Seminole County
D
Lake Howell
Seminole County
C
Lake Ann
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Lkannctr Lake
Seminole County
D
Lake Waumpi
Orange County
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Lake Florence
Seminole County

More Florida Lake Rankings

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Top 25 by overall water quality score

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Panfish-rich, public access

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Other Grade F Lakes in Florida

Polk-Little Bass Lake

Polk County · Clarity: 1.3 ft

Polk-Big Bass Lake

Polk County · Clarity: 1 ft

Alachua-Wauberg Lake

Alachua County · Clarity: 2.4 ft

Lake Roberta

Hillsborough County · Clarity: 1.3 ft

Volusia Lake George @ N of Center

Volusia County · Clarity: 2 ft

Lwc Lake

Brevard County · Clarity: 1.6 ft

Eutrophic Lakes in Florida

Lake Lancaster WestFlagler-Emerald LakeEastern Lake OutletFtt Lake

Lake Size & Watershed

Watershed (drainage) area
53 sq mi
Surface area
358 acres
Mean depth (est.)
7.2 ft
Shoreline
3.8 mi
Elevation
66 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: 2023-06-17

Monitoring stations: 3

Where to stay near Seminole-Howell Lake

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