| Survey name | Type | Altitude | Spacing | Flight line distance |
|---|---|---|---|---|
| Davenport | M/R-D | 121.9 m | 9.60 km | 2,666 km |
| Manchester region | M-D | 80 m above ground | 0.50 km | 22,712 km |
| East-central Iowa | M-A | 304.8 m above ground | 1.60 km | 12,070 km |
| Southeast Iowa | M-A | 304.8 m above ground | 1.60 km | 14,886 km |