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  4. Aeromagnetic surveys
  5. Washington

Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
HoquiamM/R-D121.9 m 9.60 km2,282 km
Mt. St. Helens '11M/EM-D-9999 m -9999.00 km759 km
Portland 1992M-D152.4 m above ground0.40 km5,700 km
Northern Cascades WestM-D2134 m (barometer)1.60 km10,138 km
Northern Cascades EastM-D1524 m (barometer)1.60 km5,471 km
PascoM-D150 m above ground0.40 km51,790 km
CentraliaM-D200 m above ground0.40 km23,501 km
The DallesM/R-D121.9 m 9.60 km2,336 km
VancouverM/R-D121.9 m 9.60 km2,341 km
South CascadesM-Dz2438 m (barometer)1.60 km5,632 km
Mt. AdamsM-D4420 m (barometer)1.00 km281 km
Mt. St. Helens '79M-D3505 m (barometer)1.00 km281 km
S. Washington CascadesM-D2438 m (barometer)1.00 km6,960 km
Goat RocksM-D304.8 m above ground0.80 km1,713 km
Mt. MargaretM-D304.8 m above ground0.80 km1,094 km
Indian HeavenM-D304.8 m above ground0.80 km466 km
Mt. St. Helens '81M/EM-D50 m above ground0.20 km64 km
Mt. St. Helens ReflyM-D3505 m (barometer)1.00 km281 km
YakimaM/R-D121.9 m 9.60 km2,169 km