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D

Herlong Park Lake

Lake County, FloridaHypereutrophic

Herlong Park Lake is a highly nutrient-loaded hypereutrophic lake in Lake County, Florida. Water quality is graded D based on 2 sampling years through 2023. Compared to the 316 other monitored lakes in Lake County, Herlong Park Lake ranks #302 for water quality.

Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2023-08-17. 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 3.3 ft of visibility. Phosphorus level: 219 µg/L. Trophic State Index: 71.

MetricValueGrade
Water Clarity (Secchi Depth)3.3 ftD
Phosphorus219 µg/LF
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)71Hypereutrophic

Very high nutrients, dense algae, poor clarity

Location

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County Ranking

Ranked #302 of 317 lakes in Lake County

Cleaner Lakes Within 30 Miles

Herlong Park Lake holds Grade D. 5 nearby lakes hold higher grades.

See full comparison →

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Other Grade D Lakes in Florida

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Flagler County · Clarity: 1.8 ft

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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

Hypereutrophic Lakes in Florida

Polk-Little Bass LakeAlicetst LakePolk-Big Bass LakeLake Roberta

Regulated Pollution Sources Nearby

2 EPA-permitted facilities operate within about 5 miles of Herlong Park Lake under Clean Water Act (NPDES) discharge permits.

  • Leesburg, City Of - Canal Street Wwtf
    Leesburg · 0.3 mi away · NPDES FL0105066
  • Cutrale Citrus Sprayfield
    Leesburg · 0.4 mi away · NPDES FL0105619

Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.

Data Sources

Water quality data from the EPA Water Quality Portal

Regulated discharger data from EPA ECHO (ICIS-NPDES)

Grading methodology based on Metropolitan Council standards

Most recent sample: 2023-08-17

Monitoring stations: 1

Where to stay near Herlong Park Lake

Compare lakeside cabins, hotels, and vacation rentals near Herlong Park Lake in Lake County, Florida — live availability and prices for your trip.

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