Hillsboro Northwest (OR-WA)

Survey type M-D (magnetic; collected in digital form)
Flown by Airmag Surveys, Inc.
Date flown 06/96
Line spacing 0.53 (km)
Altitude 304.8 (m) above ground
Total distance 482 (km)
References
Counties Columbia - Multnomah - Washington - Clark
Overlapping surveys

Data: Magnetic (M-D)