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  3. Magnetic anomaly
  4. Aeromagnetic surveys

Airborne geophysical surveys

Counties of North Dakota

Survey name Type Altitude Spacing Flight line distance
AberdeenM/R-D121.92 m 9.66 km2,316 km
BismarckM/R-D121.92 m 9.66 km2,525 km
Devils LakeM/R-D121.92 m 9.66 km2,213 km
DickinsonM/R-D121.92 m 4.83 km4,183 km
EkalakaM/R-D121.92 m 4.83 km4,691 km
FargoM/R-D121.92 m 9.66 km2,342 km
GlendiveM/R-D121.92 m 9.66 km2,470 km
Grand ForksM/R-D121.92 m 9.66 km2,301 km
JamestownM/R-D121.92 m 9.66 km2,282 km
LemmonM/R-D121.92 m 4.83 km4,257 km
Mc CluskyM/R-D121.92 m 9.66 km2,342 km
Mc IntoshM/R-D121.92 m 9.66 km2,430 km
MilbankM/R-D121.92 m 9.66 km2,366 km
Miles CityM/R-D121.92 m 4.83 km4,411 km
MinotM/R-D121.92 m 9.66 km2,557 km
Northeast Mt.-Western N.D.M-D&Dz1219.2 m (barometer)4.83 km11,193 km
South-central North DakotaM-D1066.8 m (barometer)4.83 km2,784 km
RaubM-D&Dz1066.8 m (barometer)4.83 km410 km
NE North DakotaM-D152.4 m above ground0.40 km29,266 km
New RockfordM/R-D121.92 m 9.66 km2,248 km
Standing RockM-D91.44 m above ground1.00 km13,036 km
Thief River FallsM/R-D121.92 m 9.66 km2,277 km
Watford CityM/R-D121.92 m 4.83 km2,923 km
WillistonM/R-D121.92 m 9.66 km2,363 km
Wolf PointM/R-D121.92 m 9.66 km2,475 km