What is the water quality grade for Spring Lake Northwest?

Spring Lake Northwest in Orange County, Florida received a water quality grade of C (Fair). Water clarity: 3 ft visibility. Phosphorus: 37 µg/L.

Is Spring Lake Northwest safe to swim in?

Generally safe for swimming, moderate water quality. Spring Lake Northwest has an overall water quality grade of C. Always check local health department advisories before swimming.

Spring Lake Northwest

Orange County, FloridaEutrophic

Spring Lake Northwest is a productive, nutrient-rich eutrophic lake in Orange County, Florida. Water quality is graded C based on 2 sampling years through 2025. Compared to the 531 other monitored lakes in Orange County, Spring Lake Northwest ranks #357 for water quality.

Source: EPA Water Quality Portal sampling records, Florida DNR, last sampled 2025-02-25. Grade methodology: LakeGrade methodology.

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Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Very murky, less than 3 ft of visibility. Phosphorus level: 37 µg/L. Trophic State Index: 59.

Metric	Value	Grade
Water Clarity (Secchi Depth)	3 ft	D
Phosphorus	37 µg/L	C
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	59	Eutrophic

High nutrients, frequent algae, reduced clarity

Location

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County Ranking

Ranked #357 of 532 lakes in Orange County

Cleaner Lakes Within 30 Miles

Spring Lake Northwest holds Grade C. 2 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Orange County

More Florida Lake Rankings

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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

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Other Grade C Lakes in Florida

Eastern Lake Outlet

Walton County · Clarity: 4.2 ft

Seminole-Secret Lake

Seminole County · Clarity: 4.5 ft

Spring Lake

Seminole County · Clarity: 2.9 ft

Polk-Fannie Lake

Polk County · Clarity: 3.5 ft

Volusia-North Talmadge Lake

Volusia County · Clarity: 4.5 ft

Seminole-Spring Lake

Seminole County · Clarity: 3 ft

Eutrophic Lakes in Florida

Flagler-Emerald Lake Eastern Lake Outlet Seminole-Secret Lake Ftt Lake

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2025-02-25

Monitoring stations: 1

Where to stay near Spring Lake Northwest

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