| Survey name | Type | Altitude | Spacing | Flight line distance |
|---|---|---|---|---|
| Cleveland | M/R-D | 121.9 m | 9.60 km | 2,114 km |
| Northern Ohio East | M-D | 548.6 m (barometer) | 3.20 km | 7,330 km |
| Pittsburgh ARMS | M-Dz | 152.4 m above ground | 1.60 km | 24,140 km |
| Central & Northern Penn. | M-Dz | 304.8 m above ground | 4.80 km | 12,713 km |