The regional maps (GIF images, HAZUS input format, and Microsoft Access Database®) available here are derived in much the same way as the urban seismic hazard maps, with both including the effects of shallow geologic structure on estimated ground shaking. The sources of the geologic information are provided below and each map lists the earthquake parameters specific to that map.

Location Description Mag Measurement Download
New Madrid Seismic Zone
N of Memphis on a fault coincident with the NE linear zone of modern seismicity, geology included M7.7 MMI GIF
N of Memphis on a fault coincident with the NE linear zone of modern seismicity, geology included M7.7 PGA GIF
N of Memphis on a fault coincident with the NE linear zone of modern seismicity, geology included M7.7 1.0s SA GIF
N of Memphis on a fault coincident with the NE linear zone of modern seismicity, geology included M7.7 0.3s SA GIF
N of Memphis on a fault coincident with the NE linear zone of modern seismicity, geology included - HAZUS input/ArcGIS M7.7 MMI,PGA,PGV,1.0s SA,0.3s SA ZIP (3.3MB), MDB (7.8MB)
NW of Memphis on a fault coincident with the SW linear zone of modern seismicity, geology included M7.7 MMI GIF
NW of Memphis on a fault coincident with the SW linear zone of modern seismicity, geology included M7.7 PGA GIF
NW of Memphis on a fault coincident with the SW linear zone of modern seismicity, geology included M7.7 1.0s SA GIF
NW of Memphis on a fault coincident with the SW linear zone of modern seismicity, geology included M7.7 0.3s SA GIF
NW of Memphis on a fault coincident with the SW linear zone of modern seismicity, geology included - HAZUS input/ArcGIS M7.7 MMI,PGA,PGV,1.0s SA,0.3s SA ZIP (2.4MB), MDB (5.8MB)
Wabash Valley Seismic Zone
Near Vincennes, IN in an area coincident with liquefaction features, geology included M7.1 MMI GIF
Near Vincennes, IN in an area coincident with liquefaction features, geology included M7.1 PGA GIF
Near Vincennes, IN in an area coincident with liquefaction features, geology included M7.1 1.0s SA GIF
Near Vincennes, IN in an area coincident with liquefaction features, geology included M7.1 0.3s SA GIF
Near Vincennes, IN in an area coincident with liquefaction features, geology included - HAZUS input/ArcGIS M7.1 MMI,PGA,PGV,1.0s SA,0.3s SA ZIP (168KB), MDB (1.3MB)
Shoal Creek/Southern Illinois Basin
E of St.Louis, MO in an area coincident with liquefaction features, geology included M6.0 MMI GIF
E of St.Louis, MO in an area coincident with liquefaction features, geology included M6.0 PGA GIF
E of St.Louis, MO in an area coincident with liquefaction features, geology included M6.0 1.0s SA GIF
E of St.Louis, MO in an area coincident with liquefaction features, geology included M6.0 0.3s SA GIF
E of St.Louis, MO in an area coincident with liquefaction features, geology included - HAZUS input/ArcGIS M6.0 MMI,PGA,PGV,1.0s SA,0.3s SA ZIP (93KB), MDB (1.1MB)