Central Sierra Nevada (CA)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by Aero Service Corporation
Date flown ?/56
Line spacing 0.6 and 1.2 (km)
Altitude 152.4 (m) above ground
Total distance 7,378 (km)
References
Counties Calaveras - Fresno - Madera - Mariposa - Merced - Stanislaus - Tuolumne
Overlapping surveys

Data: Magnetic (M-Dz)