Dams in Onslow County, North Carolina
5Total Dams
3High Hazard
0Significant
Dam Safety in Onslow County, North Carolina
Onslow County has 5 dams tracked in the National Inventory of Dams. Of these, 3 are classified as high hazard — meaning failure would probably cause loss of human life.
The average dam in Onslow County is 23 years old. The most common purpose is other. The tallest dam is North Topsail Water & Sewer Lagoon Dam at 18 ft.
Explore more: Oldest dams in North Carolina · Tallest dams · High risk dams · Largest reservoirs
Data note: Hazard potential describes the consequences if a dam failed; it does not predict the likelihood of failure. Inspection, condition, and emergency-plan fields can be incomplete or delayed. Check state dam-safety officials and local emergency managers for official guidance.
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| North Topsail Water & Sewer Lagoon Dam | High | Fair | 18 | Other | |
| Jacksonville East-west Storage Lagoon Dam | High | Satisfactory | 15 | Other | 1997 |
| Jacksonville South Storage Lagoon Dam | High | Satisfactory | 0 | Flood Risk Reduction | 2009 |
| Yow-williams Lake Dam | Low | Satisfactory | 12 | Recreation | |
| Oceanview Farms Dam | Low | Satisfactory | 12 | Other |