| Survey name | Type | Altitude | Spacing | Flight line distance |
|---|---|---|---|---|
| Central North Carolina | M-Dz | 152.4 m above ground | 0.80 km | 8,272 km |
| Northeast North Carolina | M-D | 152.4 m above ground | 1.60 km | 8,288 km |
| South-central N. C. West | M-D | 152.4 m above ground | 1.60 km | 4,184 km |
| Offshore E. Coast Tie Lines | M-D | 300 m (barometer) | -9999.00 km | 185,000 km |