| Survey type |
M-D (magnetic; collected in digital form) |
| Flown by |
U.S. Geological Survey |
| Date flown |
08/92-09/92 |
| Line spacing |
0.4 (km)
|
| Altitude |
152.4 (m) above ground
|
| Total distance |
5,700 (km)
|
| References |
Snyder, Stephen L., Felger, T.J., Blakely, R. J., Wells, R. E., 1993, Aeromagnetic map of the Portland-Vancouver Metropolitan area, Oregon and Washington; Open-File Report 93-211http://dx.doi.org/10.3133/ofr93211 |
| Counties |
Clackamas - Marion - Multnomah - Washington - Yamhill - Clark - Skamania
|
| Overlapping surveys |
|
