Lawrence County (SD)

Survey type M-A (magnetic; derived from analog data)
Flown by U.S. Geological Survey
Date flown 10/55
Line spacing 0.8 (km)
Altitude 152.4 (m) above ground
Total distance 1,689 (km)
References
Counties Lawrence - Meade - Pennington
Overlapping surveys

Data: Magnetic (M-A)