North Sierra Foothills (CA)

Survey type M-D (magnetic; collected in digital form)
Flown by Geodata International, Inc.
Date flown 04/81
Line spacing 0.8 (km)
Altitude 304.8 (m) above ground
Total distance 8,481 (km)
References
Counties Amador - Butte - El Dorado - Nevada - Placer - Sacramento - San Joaquin - Shasta - Tehama - Yuba
Overlapping surveys

Data: Magnetic (M-D)