| Survey name | Type | Altitude | Spacing | Flight line distance |
|---|---|---|---|---|
| Baltimore | M/R-D | 121.9 m | 4.80 km | 4,250 km |
| Harrisburg | M/R-D | 121.9 m | 4.80 km | 4,852 km |
| Harford County | M-Dz | 152.4 m above ground | 0.80 km | 2,092 km |
| Maryland Coop '68 | M-Dz | 121.9 m above ground | 0.80 km | 3,947 km |
| Newark | M/R-D | 121.9 m | 4.80 km | 3,975 km |
| Pennsylvania Triassic '57 | M-Dz | 152.4 m above ground | 0.40 km | 18,958 km |
| Pennsylvania Coop | M-Dz | 914.4 m (barometer) | 3.20 km | 4,828 km |
| Pennsylvania-Maryland Tie | M-Dz | 152.4 m above ground | 0.80 km | 1,351 km |
| Wilmington | M/R-D | 121.9 m | 9.60 km | 2,018 km |