| Survey name | Type | Altitude | Spacing | Flight line distance |
|---|---|---|---|---|
| Baltimore | M/R-D | 121.92 m | 4.83 km | 4,250 km |
| Maryland Coop '68 | M-Dz | 121.92 m above ground | 0.80 km | 3,948 km |
| Maryland Coop '71 | M-Dz | 365.76 m (barometer) | 1.61 km | 4,566 km |
| Delaware-New Jersey | M-D | 152.4 m above ground | 1.61 km | 13,752 km |
| Washington | M/R-D | 121.92 m | 4.83 km | 3,824 km |
| Wilmington | M/R-D | 121.92 m | 9.66 km | 2,018 km |