Long Valley '56 (CA)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by U.S. Geological Survey
Date flown 08/56
Line spacing 1.6 (km)
Altitude 152.4 (m) by barometer measurement
Total distance 1,641 (km)
References
Counties Inyo - Mono
Overlapping surveys

Data: Magnetic (M-Dz)