Airborne geophysical surveys

Counties of Michigan

Survey name Type Altitude Spacing Flight line distance
AshlandM/R-D121.9 m 4.80 km3,162 km
CheboyganM/R-D121.9 m 9.60 km1,351 km
ChicagoM/R-D121.9 m 9.60 km2,051 km
DetroitM/R-D121.9 m 9.60 km1,342 km
EscanabaM/R-D121.9 m 9.60 km1,284 km
Iron Mountain - Menominee RegionM-D80 m above ground0.15 km37,553 km
FlintM/R-D121.9 m 9.60 km1,609 km
Ft WayneM/R-D121.9 m 9.60 km2,666 km
Grand RapidsM/R-D121.9 m 9.60 km3,310 km
HancockM/R-D121.9 m 4.80 km442 km
Iron MtnM/R-D121.9 m 4.80 km4,280 km
Iron Mtn - GLTZM-D100 m above ground0.15 km38,941 km
Iron RiverM/R-D121.9 m 4.80 km3,846 km
MarquetteM/R-D121.9 m 4.80 km2,655 km
Michigan A (Iron)M-Dz152.4 m above ground0.40 km13,840 km
Michigan C (Dickinson)M-Dz152.4 m above ground0.53 km3,540 km
Michigan FM-Dz152.4 m above ground0.40 km9,817 km
Michigan B (Keweenaw)M-Dz152.4 m above ground0.80 km3,701 km
Michigan B '50M-Dz152.4 m above ground0.80 km1,046 km
Marquette Harvey CentralM-Dz152.4 m above ground1.60 km780 km
Michigan E NorthM-Dz152.4 m above ground0.40 km4,506 km
Michigan Coop '62M-Dz152.4 m above ground0.40 km2,665 km
Michigan Coop South '63M-Dz152.4 m above ground0.40 km3,540 km
Michigan Coop West '65M-Dz152.4 m above ground0.80 km2,735 km
MenomineeM-Dz152.4 m above ground0.80 km4,184 km
Delta '67M-Dz152.4 m above ground0.80 km7,966 km
Upper Michigan EastM-D152.4 m above ground1.60 km3,918 km
Upper Michigan WestM-D152.4 m above ground3.20 km1,094 km
Michigan Peninsula EastM-D152.4 m above ground3.20 km1,432 km
Michigan Peninsula WestM-D152.4 m above ground1.60 km2,084 km
Limestone MountainM-D121.9 m above ground0.80 km48 km
Jacobsville Contact SouthM-D121.9 m above ground0.40 km1,487 km
Jacobsville Contact NorthM/R-D121.9 m above ground0.40 km302 km
Berrien CountyM/R/EM-D30 m above ground0.32 km542 km
Berrien County Long LinesM/R/EM-D30 m above ground0.32 km98 km
SE MichiganM-D30 m above ground0.32 km692 km
MidlandM/R-D121.9 m 9.60 km3,389 km
Northern Ohio WestM-D548.6 m (barometer)2.40 km9,503 km
Sault Sainte MarieM/R-D121.9 m 9.60 km1,464 km
Tawas CityM/R-D121.9 m 9.60 km785 km
ToledoM/R-D121.9 m 9.60 km1,731 km
Traverse CityM/R-D121.9 m 9.60 km3,567 km
Two HarborsM/R-D121.9 m 9.60 km1,364 km
Florence '56M-Dz152.4 m above ground0.40 km3,942 km
Ironwood Fill-InM-D304.8 m above ground0.80 km1,005 km
West Florence Fill-InM-D304.8 m above ground0.80 km675 km
Northeastern WisconsinM-D304.8 m above ground0.80 km10,002 km
Northeast WisconsinM-D304.8 m above ground0.80 km19,312 km
Wisconsin Tie LinesM-D304.8 m above ground0.80 km2,293 km
North-central WisconsinM-D152 m above ground0.80 km km