Airborne geophysical surveys

Counties of South Dakota

Survey name Type Altitude Spacing Flight line distance
AberdeenM/R-D121.9 m 9.60 km2,315 km
AllianceM/R-D121.9 m 9.60 km2,528 km
EkalakaM/R-D121.9 m 4.80 km4,691 km
Big Sioux AquiferM/EM-D38 m above ground0.20 km910 km
GilletteM/R-D121.9 m 4.80 km4,723 km
Hot SpringsM/R-D121.9 m 4.80 km4,710 km
HuronM/R-D121.9 m 9.60 km2,348 km
Northwest IowaM-A304.8 m above ground1.60 km19,199 km
LemmonM/R-D121.9 m 4.80 km4,256 km
MartinM/R-D121.9 m 9.60 km2,433 km
Mc IntoshM/R-D121.9 m 9.60 km2,430 km
MilbankM/R-D121.9 m 9.60 km2,365 km
MitchellM/R-D121.9 m 9.60 km2,380 km
Minnesota Coop SouthwestM-Dz304.8 m above ground1.60 km16,173 km
SwiftM-Dz304.8 m above ground1.60 km14,162 km
West-central surveysM-D150 m above ground0.40 km82,000 km
South-central North DakotaM-D1067 m (barometer)4.80 km2,784 km
New CastleM/R-D121.9 m 4.80 km4,763 km
O'neillM/R-D121.9 m 8.00 km2,740 km
PierreM/R-D121.9 m 9.60 km2,565 km
Rapid CityM/R-D121.9 m 4.80 km5,009 km
South Black HillsM-A152.4 m above ground0.40 km2,574 km
Lawrence CountyM-A152.4 m above ground0.80 km1,689 km
Black HillsM-A2286 m (barometer)1.60 km1,971 km
S.W. S. Dakota-E. WyomingM-D152.4 m above ground1.00 km10,581 km
Standing RockM-D91 m above ground1.00 km13,035 km
S. South DakotaM-Dz1311 m (barometer)1.60 km28,689 km
NemoM/R-D121.9 m above ground0.40 km238 km
Sioux CityM/R-D121.9 m 8.00 km2,740 km
Sioux FallsM/R-D121.9 m 9.60 km2,380 km
ValentineM/R-D121.9 m 9.60 km2,637 km
WatertownM/R-D121.9 m 9.60 km2,381 km