Airborne geophysical surveys

Counties of Iowa

Survey name Type Altitude Spacing Flight line distance
BurlingtonM/R-D121.9 m 9.60 km2,742 km
CentervilleM/R-D121.9 m 9.60 km2,697 km
DavenportM/R-D121.9 m 9.60 km2,666 km
Des MoinesM/R-D121.9 m 9.60 km2,666 km
DubuqueM/R-D121.9 m 9.60 km2,634 km
Manchester regionM-D80 m above ground0.50 km22,712 km
FairmontM/R-D121.9 m 9.60 km2,602 km
FremontM/R-D121.9 m 4.80 km4,546 km
Ft DodgeM/R-D121.9 m 9.60 km2,634 km
Manson (Blanden)M-A304.8 m above ground1.60 km1,770 km
DecorahM/G-D79 m above ground0.40 km3,411 km
Northwest IowaM-A304.8 m above ground1.60 km19,199 km
Northeast IowaM-A304.8 m above ground1.60 km12,713 km
East-central IowaM-A304.8 m above ground1.60 km12,070 km
Southeast IowaM-A304.8 m above ground1.60 km14,886 km
Southern IowaM-A609.6 m (barometer)1.60 km8,545 km
Northwest IllinoisM-D548.6 m (barometer)4.80 km2,341 km
SW Wisconsin-NW IllinoisM-D609.6 m (barometer)0.80 km7,563 km
La CrosseM/R-D121.9 m 9.60 km2,602 km
Mason CityM/R-D121.9 m 9.60 km2,602 km
WasecaM-Dz304.8 m above ground1.60 km13,759 km
Minnesota Coop SouthwestM-Dz304.8 m above ground1.60 km16,173 km
Southwestern surveysM-D200 m above ground0.50 km81,000 km
Southeastern surveys part 1M-D200 m above ground0.50 km km
Southeastern surveys part 3M-D200 m above ground1.00 km km
North Missouri Ground MagM-Dz-9999 m at ground level1.60 km km
Nebraska South '63M-A304.8 m above ground3.20 km5,544 km
Nebraska CityM/R-D121.9 m 9.60 km2,697 km
OmahaM/R-D121.9 m 9.60 km2,666 km
Cedar RapidsM/EM-D45 m above ground0.20 km338 km
Sioux CityM/R-D121.9 m 8.00 km2,740 km
Sioux FallsM/R-D121.9 m 9.60 km2,380 km
WaterlooM/R-D121.9 m 9.60 km2,634 km
Wis.-Ill. Lead-Zinc '48M-Dz548.6 m (barometer)0.40 km4,441 km
Southwest WisconsinM-D304.8 m above ground0.80 km22,128 km
Wisconsin Tie LinesM-D304.8 m above ground0.80 km2,293 km