Limestone Lake is a productive, nutrient-rich eutrophic lake in Duplin County, North Carolina. Water quality is graded D based on 3 sampling years through 2023.
Source: EPA Water Quality Portal sampling records, North Carolina DNR, last sampled 2023-09-18. 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
Very murky, less than 2.3 ft of visibility. Phosphorus level: 50 µg/L. Chlorophyll-a: 63 µg/L. Trophic State Index: 66.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.3 ft | F |
| Phosphorus | 50 µg/L | C |
| Chlorophyll-a (Algae) | 63 µg/L | F |
| Trophic State Index (TSI) | 66 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Location
County Ranking
Ranked #1 of 1 lakes in Duplin County
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Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2023-09-18
Monitoring stations: 2