| Survey name | Type | Altitude | Spacing | Flight line distance |
|---|---|---|---|---|
| Baltimore | M/R-D | 121.9 m | 4.80 km | 4,250 km |
| Maryland Coop '68 | M-Dz | 121.9 m above ground | 0.80 km | 3,947 km |
| Maryland Coop '71 | M-Dz | 365.7 m (barometer) | 1.60 km | 4,565 km |
| Delaware-New Jersey | M-D | 152.4 m above ground | 1.60 km | 13,751 km |
| Washington | M/R-D | 121.9 m | 4.80 km | 3,823 km |
| Wilmington | M/R-D | 121.9 m | 9.60 km | 2,018 km |