A brief description of some of the famous earthquake faults in the United States.

Free Encyclopedia with information & background history about the New Madrid Fault Zone. Talks about the potential reocurrances of earthquakes in this region.

Discusses the suspected rupture area in the New Madrid seismic zone.

This site is about The New Madrid Fault, the highest earthquake risk in the United States. It explains The great New Madrid Earthquak of 1811-12. It answers some of the follwoing questions:

• WHEN WILL ANOTHER EARTHQUAKE HAPPEN THE SIZE OF THOSE IN 1811-1812?
• WHAT is the RICHTER SCALE?
• IF a FAULT HAS LOTS of LITTLE EARTHQUAKES, WILL LARGER ONES BE PREVENTED?
• IF a FAULT HAS LOTS of LITTLE EARTHQUAKES, WILL LARGER ONES BE PREVENTED?

Explains the fault system, what measures can be taken to protect lives,and the various earthquake (magnitude) measuring methods.

Introduction to the New Madrid Fault Zone and how & why it got its name.

History and the consequences behind the 1811 quake. Includes a map of the 136 recent earthquakes in Central US. Take a look at the menu on the right side of the page. Emergency checklist gives notes to help prepare you for all sorts of emergencies. How soon? How Strong? introduces construction problems.

The Mississippi Valley-"Whole Lotta Shakin' Goin' On"

Presents what Government agencies, universities, and private organizations are doing to increase awareness of earthquake threat and to reduce loss of life and property in future shocks.

Discusses the New Madrid Earthquake and others with links to other resources like maps.

An actual eyewitness account of the New Madrid Earthquake. Contains details of its history and the events/happenings of the quake.

Explains the role of a structural engineer. Explains how building designs and other structures are built to resist the effects of earthquakes.

The Big One: Looking Ahead to the next New Madrid Earthquake

Discusses the chances of another earthquake in New Madrid.

River facts and figures information.

Talks about the central Mississippi Valley and how it as more earthquakes than any other part of the United States. Discusses the geologic structures associated with the causes of these quakes. The Ongoing geophysical studies that are revealing these hidden features, enabling residents of the region to better prepare for future earthquakes also presented.

 Online reference center for information on the Mississippi River with pictures of maps.

Select year, choose the information you are looking for and then scroll down and search the time period. (1790-1860)

National census database spanning 1850 to 2000.

Demographic & geography information.

Demographic & geography information.