| Survey name | Type | Altitude | Spacing | Flight line distance |
|---|---|---|---|---|
| Roanoke | M/R-D | 121.9 m | 9.60 km | 2,784 km |
| Roanoke Quad. | M-Dz | 152.4 m above ground | 0.80 km | 11,265 km |
| Piedmont Areas | M-Dz | 152.4 m above ground | 0.80 km | 10,782 km |
| S.-cent. Piedmont Rad (R5) | M/R-D | 152.4 m above ground | 0.80 km | 4,506 km |