Southeastern California (CA-NV)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by U.S. Geological Survey
Date flown 03/73-04/73
Line spacing 4.8 (km)
Altitude 2743 (m) by barometer measurement
Total distance 6,681 (km)
References
Counties La Paz - Mohave - Riverside - San Bernardino - Clark
Overlapping surveys

Data: Magnetic (M-Dz)