Stonyford (CA)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by U.S. Geological Survey
Date flown 10/62
Line spacing 1.6 (km)
Altitude 2134 (m) by barometer measurement
Total distance 1,287 (km)
References
Counties Colusa - Glenn - Lake - Mendocino
Overlapping surveys

Data: Magnetic (M-Dz)