What is the water quality grade for Otter Creek Section Lake?

Otter Creek Section Lake in Addison County, Vermont received a water quality grade of B (Good). Water clarity: 9.8 ft visibility. Phosphorus: 11.4 µg/L. Chlorophyll-a (algae): 6.1 µg/L.

Is Otter Creek Section Lake safe to swim in?

Good for swimming, clear water with low algae levels. Otter Creek Section Lake has an overall water quality grade of B. Algae concentration (chlorophyll-a) is 6.1 µg/L. Always check local health department advisories before swimming.

Addison County, Vermont

Otter Creek Section Lake

Grade BGood · 9.8 ft clarity

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Mesotrophic

Otter Creek Section Lake is a mesotrophic lake in Addison County, Vermont. Water quality is graded B based on 3 sampling years through 2025. Compared to the 12 other monitored lakes in Addison County, Otter Creek Section Lake ranks #10 for water quality.

Source: EPA Water Quality Portal sampling records, Vermont DNR, last sampled 2025-08-19. 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

Moderate clarity, visible to about 9.8 ft. Phosphorus level: 11.4 µg/L. Chlorophyll-a: 6.1 µg/L. Trophic State Index: 44.

Metric	Value	Grade
Water Clarity (Secchi Depth)	9.8 ft	C
Phosphorus	11.4 µg/L	A
Chlorophyll-a (Algae)	6.1 µg/L	B
Trophic State Index (TSI)	44	Mesotrophic

Moderate nutrients, good water quality

Where to stay near Otter Creek Section Lake

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