Yellowstone Regional (WY-MT)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by U.S. Geological Survey
Date flown 07/69-09/69
Line spacing 1.6 (km)
Altitude 4115 (m) by barometer measurement
Total distance 9,213 (km)
References
Counties Carbon - Stillwater - Fremont - Hot Springs - Park - Teton
Overlapping surveys

Data: Magnetic (M-Dz)