
Duplin County Lake Quality
North Carolina, 6 lakes, average grade F (Algae-prone)
Duplin County holds 6 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. 1 of those lake carry an A–F grade. The county-level summary describes that subset, not every water body listed. The county average is F — the most-stressed bracket in our rubric. Most monitored lakes here show persistent nutrient loading and algal pressure.
Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Limestone Lake (F) is the cleanest in the county.
Where to stay near Duplin County
Top-rated places to stay near Duplin County
Prices for Sep 4–6, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Duplin County?
Get lake water-quality report cards plus the best cabin & lodging deals near Duplin County — straight to your inbox. No spam, unsubscribe anytime.
Quick Answers for Duplin County
Planning a trip? Check special fishing regulations for Limestone Lake — or check the official North Carolina fishing regulations.
All Lakes in Duplin County
6 lakes · 1 graded, 5 not rated1 graded lake · 5 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | FLimestone LakeDuplin | F | 2.3 ft | 50 µg/L | 63 µg/L | No recent samples | Not recorded |
| NRBoney Mill PondDuplin | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRJohnsons LakeDuplin | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRWhitfields PondDuplin | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRMaxwell MillpondDuplin | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRBowden MillpondDuplin | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded |
NR = not rated: there is not enough recent sampling to support a letter. That is EPA Integrated Reporting Category 3 (insufficient information), not a failing grade. How grading works.
Lake Match
Which lake suits how you actually use one?
Six questions — swimming, fishing, quiet, cabins, drive time — and a shortlist of graded lakes that fit, with the water quality behind each one.
Other Counties in North Carolina
See how Duplin County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all United States (49 states), Canada (Ontario and Québec), and 38 other country hubs..
Source: EPA National Aquatic Resource Surveys, 2026.