| Survey name | Type | Altitude | Spacing | Flight line distance |
|---|---|---|---|---|
| Trinity Alps | M-Dz | 2590 m (barometer) | 1.60 km | 1,853 km |
| Yolla Bolly | M-Dz | 304.8 m above ground | 0.80 km | 1,182 km |
| Orleans Mountain | M-D | 304.8 m above ground | 0.80 km | 1,094 km |
| Redding '85 | M-D | 304.8 m above ground | 0.80 km | 14,966 km |
| Cape Mendocino | M-D | 304.8 m above sea level | 0.80 km | 3,058 km |
| California Cascades | M-D | 2743 m (barometer) | 1.60 km | 21,726 km |
| RedBluff | M-D | 244 m above ground | 0.80 km | km |
| Redding | M/R-D | 121.9 m | 9.60 km | 2,697 km |
| Ukiah | M/R-D | 121.9 m | 9.60 km | 2,441 km |
| Weed | M/R-D | 121.9 m | 9.60 km | 2,660 km |