Northeast Washington '73 (WA)

Survey type M-D (magnetic; collected in digital form)
Flown by Aerial
Date flown 07/73-08/73
Line spacing 1.61 (km)
Altitude 2133.6 (m) by barometer measurement
Total distance 8,143 (km)
References
Counties Bonner - Kootenai - Douglas - Ferry - Grant - Lincoln - Okanogan - Pend Oreille - Spokane - Stevens
Overlapping surveys

Data: Magnetic (M-D)