Mayo Reservoir is a productive, nutrient-rich eutrophic lake in Person County, North Carolina. Water quality is graded C based on 2 sampling years through 2024. Compared to the 2 other monitored lakes in Person County, Mayo Reservoir ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, North Carolina DNR, last sampled 2024-10-22. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 5.9 ft. Chlorophyll-a: 9.5 µg/L. Trophic State Index: 52.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.9 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 9.5 µg/L | B |
| Trophic State Index (TSI) | 52 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Mayo Reservoir
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Fishing Mayo Reservoir
Location
County Ranking
Ranked #1 of 3 lakes in Person County
Cleaner Lakes Within 30 Miles
Mayo Reservoir holds Grade C. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Person County
Explore Mayo Reservoir 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 C 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: 2024-10-22
Monitoring stations: 3