| Survey name | Type | Altitude | Spacing | Flight line distance |
|---|---|---|---|---|
| Greensboro | M/R-D | 121.9 m | 4.80 km | 5,122 km |
| Hamme | M-Dz | 121.9 m above ground | 0.80 km | 6,477 km |
| Danville 1994 | M-D | 121.9 m above ground | 0.80 km | 4,828 km |
| South-central Piedmont | M-Dz | 152.4 m above ground | 0.80 km | 10,621 km |