What is the water quality grade for Tar River Reservoir?

Tar River Reservoir in Nash County, North Carolina received a water quality grade of D (Poor). Phosphorus: 70 µg/L. Chlorophyll-a (algae): 33 µg/L.

Is Tar River Reservoir safe to swim in?

Swimming not recommended, poor water quality with high algae risk. Tar River Reservoir has an overall water quality grade of D. Algae concentration (chlorophyll-a) is 33 µg/L. Always check local health department advisories before swimming.

Nash County, North Carolina

Tar River Reservoir

Grade DPoor water quality

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Eutrophic

Tar River Reservoir is a productive, nutrient-rich eutrophic lake in Nash County, North Carolina. Water quality is graded D based on 2 sampling years through 2022.

Source: EPA Water Quality Portal sampling records, North Carolina DNR, last sampled 2022-09-01. Grade methodology: LakeGrade methodology.

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Swimming Safety

Swimming not recommended, poor water quality with high algae risk

Water Quality Grade: D, Poor

No clarity data. Phosphorus level: 70 µg/L. Chlorophyll-a: 33 µg/L. Trophic State Index: 65.

Metric	Value	Grade
Water Clarity (Secchi Depth)	No data
Phosphorus	70 µg/L	D
Chlorophyll-a (Algae)	33 µg/L	F
Trophic State Index (TSI)	65	Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Tar River Reservoir

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