D

Lake Norris

Lake County, FloridaHypereutrophic

Lake Norris is a highly nutrient-loaded hypereutrophic lake in Lake County, Florida. Water quality is graded D based on 2 sampling years through 2025. Compared to the 316 other monitored lakes in Lake County, Lake Norris ranks #307 for water quality.

Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-07-16. Grade methodology: LakeGrade methodology.

Watch Lake Norris water quality

Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.

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: 88 µg/L. Trophic State Index: 71.

Metric	Value	Grade
Water Clarity (Secchi Depth)	1.3 ft	F
Phosphorus	88 µg/L	D
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	71	Hypereutrophic

Very high nutrients, dense algae, poor clarity

Location

Loading map…

County Ranking

Ranked #307 of 317 lakes in Lake County

Cleaner Lakes Within 30 Miles

Lake Norris holds Grade D. 5 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Lake County

Lake Norris S of Center

Clrwtrpais Lake

Sandminesesh 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 D Lakes in Florida

Flagler-Emerald Lake

Flagler County · Clarity: 1.8 ft

Indian River County · Clarity: 2.3 ft

Lake Orlando East

Orange County · Clarity: 2 ft

Orange County · Clarity: 3 ft

Orange County · Clarity: 2 ft

Putnam-Suggs Lake

Putnam County · Clarity: 2 ft

Hypereutrophic Lakes in Florida

Polk-Little Bass Lake Alicetst Lake Polk-Big Bass Lake Lake Roberta

Lake Size & Watershed

Watershed (drainage) area

81 sq mi

Surface area

1,077 acres

Mean depth (est.)

17.1 ft

Shoreline

6.4 mi

Elevation

36 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: 2025-07-16

Monitoring stations: 2

Where to stay near Lake Norris

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

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.