Hells Canyon (ID-OR)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by GeoMet.
Date flown 09/74
Line spacing 1.61 (km)
Altitude 2743.2 (m) by barometer measurement
Total distance 3,058 (km)
References
Counties Adams - Idaho - Nez Perce - Valley - Baker - Wallowa - Asotin
Overlapping surveys

Data: Magnetic (M-Dz)