Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
AberdeenM/R-D121.92 m 9.66 km2,316 km
AllianceM/R-D121.92 m 9.66 km2,528 km
EkalakaM/R-D121.92 m 4.83 km4,691 km
Big Sioux AquiferM/EM-D38 m above ground0.20 km911 km
GilletteM/R-D121.92 m 4.83 km4,723 km
Hot SpringsM/R-D121.92 m 4.83 km4,711 km
HuronM/R-D121.92 m 9.66 km2,348 km
Northwest IowaM-A304.8 m above ground1.61 km19,199 km
LemmonM/R-D121.92 m 4.83 km4,257 km
MartinM/R-D121.92 m 9.66 km2,433 km
Mc IntoshM/R-D121.92 m 9.66 km2,430 km
MilbankM/R-D121.92 m 9.66 km2,366 km
MitchellM/R-D121.92 m 9.66 km2,380 km
Minnesota Coop SouthwestM-Dz304.8 m above ground1.61 km16,174 km
SwiftM-Dz304.8 m above ground1.61 km14,162 km
South-central North DakotaM-D1066.8 m (barometer)4.83 km2,784 km
NemoM/R-D121.92 m above ground0.40 km238 km
New CastleM/R-D121.92 m 4.83 km4,764 km
O'neillM/R-D121.92 m 8.05 km2,741 km
PierreM/R-D121.92 m 9.66 km2,565 km
Rapid CityM/R-D121.92 m 4.83 km5,010 km
South Black HillsM-A152.4 m above ground0.40 km2,575 km
Lawrence CountyM-A152.4 m above ground0.80 km1,690 km
Black HillsM-A2286 m (barometer)1.61 km1,971 km
S.W. S. Dakota-E. WyomingM-D152.4 m above ground1.00 km10,581 km
Standing RockM-D91.44 m above ground1.00 km13,036 km
S. South DakotaM-Dz1310.64 m (barometer)1.61 km28,690 km
NemoM-D121.92 m above ground0.40 km238 km
Sioux CityM/R-D121.92 m 8.05 km2,741 km
Sioux FallsM/R-D121.92 m 9.66 km2,380 km
ValentineM/R-D121.92 m 9.66 km2,638 km
WatertownM/R-D121.92 m 9.66 km2,382 km