
Hyde County Lake Quality
North Carolina, 4 lakes, average grade F (Algae-prone)
Hyde County holds 4 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. Lake Mattamuskeet (F) is the cleanest in the county.
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Quick Answers for Hyde County
Planning a trip? Check special fishing regulations for Lake Mattamuskeet — or check the official North Carolina fishing regulations.
All Lakes in Hyde County
4 lakes · 1 graded, 3 not rated1 graded lake · 3 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | FLake MattamuskeetHyde | F | No recent samples | 55 µg/L | 102.5 µg/L | No recent samples | ✓ Public |
| NRSwan Creek LakeHyde | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRNew LakeHyde | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRLake MattamuskeetHyde | NR | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public |
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.
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Other Counties in North Carolina
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Source: EPA National Aquatic Resource Surveys, 2026.