Coastal California N. (CA)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by Gulf
Date flown ?/54
Line spacing 1.6 (km)
Altitude 914.4 (m) by barometer measurement
Total distance 4,828 (km)
References
Counties Alameda - Marin - Mendocino - San Francisco - San Mateo - Santa Clara - Santa Cruz - Sonoma
Overlapping surveys

Data: Magnetic (M-Dz)