| Survey name | Type | Altitude | Spacing | Flight line distance |
|---|---|---|---|---|
| Grangeville | M/R-D | 121.9 m | 9.60 km | 2,636 km |
| Walla Walla (Pendleton) | M-D&Dz | 152.4 m above ground | 1.60 km | 3,971 km |
| Pasco | M-D | 150 m above ground | 0.40 km | 51,790 km |
| Pullman | M/R-D | 121.9 m | 9.60 km | 2,611 km |
| Walla Walla | M/R-D | 121.9 m | 9.60 km | 2,298 km |
| Area C, Central Washington | M-D | 304.8 m above ground | 0.80 km | 7,040 km |
| Area D, Central Washington | M-D | 304.8 m above ground | 0.80 km | 6,891 km |