Waterloo (IA)

Survey type M/R-D (magnetic; radiometric; collected in digital form)
Flown by EG&G
Line spacing 9.66 (km)
Altitude 121.92 (m)
Total distance 2,634 (km)
Counties Benton - Black Hawk - Boone - Bremer - Buchanan - Butler - Cerro Gordo - Chickasaw - Fayette - Floyd - Franklin - Grundy - Hamilton - Hancock - Hardin - Humboldt - Kossuth - Marshall - Story - Tama - Webster - Wright
Overlapping surveys

Data: Magnetic, radiometric (NURE) (NURE)