| Survey name | Type | Altitude | Spacing | Flight line distance |
|---|---|---|---|---|
| Hoquiam | M/R-D | 121.9 m | 9.60 km | 2,282 km |
| Portland 1992 | M-D | 152.4 m above ground | 0.40 km | 5,700 km |
| Longview North | M-D | 304.8 m above ground | 0.80 km | 13,888 km |
| Hillsboro Northwest | M-D | 304.8 m above ground | 0.53 km | 482 km |
| Northern Cascades West | M-D | 2134 m (barometer) | 1.60 km | 10,138 km |
| Vancouver | M/R-D | 121.9 m | 9.60 km | 2,341 km |
| South Cascades | M-Dz | 2438 m (barometer) | 1.60 km | 5,632 km |
| S. Washington Cascades | M-D | 2438 m (barometer) | 1.00 km | 6,960 km |