Great Lake is a productive, nutrient-rich eutrophic lake in Craven County, North Carolina. Water quality is graded D based on 3 sampling years through 2024. Compared to the 1 other monitored lakes in Craven County, Great Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, North Carolina DNR, last sampled 2024-10-17. 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 0.7 ft of visibility. Phosphorus level: 70 µg/L. Chlorophyll-a: 8 µg/L. Trophic State Index: 67.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.7 ft | F |
| Phosphorus | 70 µg/L | D |
| Chlorophyll-a (Algae) | 8 µg/L | B |
| Trophic State Index (TSI) | 67 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Great Lake
Location
County Ranking
Ranked #1 of 2 lakes in Craven County
Nearby Lakes in Craven County
Explore Great Lake across LakeGrade
More North Carolina Lake Rankings
Top 25 by overall water quality score
Top 25 by Secchi water clarity
Grade A/B + low algae filter
Panfish-rich, public access
Full state directory
Other Grade D Lakes in North Carolina
Eutrophic Lakes in North Carolina
More records, surveys & data sources
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-10-17
Monitoring stations: 2