What is the water quality grade for Lake Sidney Lanier Upstream of Buford Dam Forebay?

Lake Sidney Lanier Upstream of Buford Dam Forebay in Gwinnett County, Georgia received a water quality grade of B (Good). Water clarity: 13.3 ft visibility. Chlorophyll-a (algae): 5.3 µg/L.

Is Lake Sidney Lanier Upstream of Buford Dam Forebay safe to swim in?

Good for swimming, clear water with low algae levels. Lake Sidney Lanier Upstream of Buford Dam Forebay has an overall water quality grade of B. Algae concentration (chlorophyll-a) is 5.3 µg/L. Always check local health department advisories before swimming.

Gwinnett County, Georgia

Lake Sidney Lanier Upstream of Buford Dam Forebay

Grade BGood · 13.3 ft clarity

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Limited DataMesotrophic

Lake Sidney Lanier Upstream of Buford Dam Forebay is a mesotrophic lake in Gwinnett County, Georgia. Water quality is graded B based on 1 sampling years through 2025. Compared to the 1 other monitored lakes in Gwinnett County, Lake Sidney Lanier Upstream of Buford Dam Forebay ranks #1 for water quality.

Source: EPA Water Quality Portal sampling records, Georgia DNR, last sampled 2025-10-08. Grade methodology: LakeGrade methodology.

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Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Good clarity, visible to about 13.3 ft. Chlorophyll-a: 5.3 µg/L. Trophic State Index: 43.

Metric	Value	Grade
Water Clarity (Secchi Depth)	13.3 ft	A
Phosphorus	No data
Chlorophyll-a (Algae)	5.3 µg/L	B
Trophic State Index (TSI)	43	Mesotrophic

Moderate nutrients, good water quality

Where to stay near Lake Sidney Lanier Upstream of Buford Dam Forebay

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