What is the water quality grade for Port Henry Section Lake?

Port Henry Section Lake in Addison County, Vermont received a water quality grade of B (Good). Water clarity: 10.8 ft visibility. Phosphorus: 10 µg/L. Chlorophyll-a (algae): 5.9 µg/L.

Is Port Henry Section Lake safe to swim in?

Good for swimming, clear water with low algae levels. Port Henry Section Lake has an overall water quality grade of B. Algae concentration (chlorophyll-a) is 5.9 µg/L. Always check local health department advisories before swimming.

Addison County, Vermont

Port Henry Section Lake

Grade BGood · 10.8 ft clarity

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Mesotrophic

Port Henry Section Lake is a mesotrophic lake in Addison County, Vermont. Water quality is graded B based on 3 sampling years through 2024. Compared to the 12 other monitored lakes in Addison County, Port Henry Section Lake ranks #6 for water quality.

Source: EPA Water Quality Portal sampling records, Vermont DNR, last sampled 2024-10-11. Grade methodology: LakeGrade methodology.

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Swimming Safety

Good for swimming, clear water with low algae levels

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Water Quality Grade: B, Good

Good clarity, visible to about 10.8 ft. Phosphorus level: 10 µg/L. Chlorophyll-a: 5.9 µg/L. Trophic State Index: 43.

Metric	Value	Grade
Water Clarity (Secchi Depth)	10.8 ft	B
Phosphorus	10 µg/L	A
Chlorophyll-a (Algae)	5.9 µg/L	B
Trophic State Index (TSI)	43	Mesotrophic

Moderate nutrients, good water quality

Where to stay near Port Henry Section Lake

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