Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
FremontM/R-D121.9 m 4.80 km4,546 km
Northwest IowaM-A304.8 m above ground1.60 km19,199 km
OaklandM/EM-D30 m above ground0.27 km371 km
Sioux CityM/R-D121.9 m 8.00 km2,740 km