The building is closed to the public, and fines have been suspended until further notice. You may return items using our book drops and pick up reserved items via curbside pick-up. Thanks for your continued patience.

Our Seismograph

Through generous funding from individuals, groups and businesses, the Merrimack Public Library became the first public library in New Hampshire to house a working seismograph and join an international network of seismic monitoring centers in June 2014. The EQ-1 seismograph is installed in the Lowell Room. Please contact Library Director Yvette Couser at to plan a class visit to learn more about the machine.

Our Donors

A seismograph in a library? Why?


Hosting a working siesmograph in our library is an exciting and unique way for the library to fulfill its mission to enhance life-long learning in our community. By partnering with the Boston College Educational Seismology Project (BC-ESP), we have geophysicists, seismologists, and geologists from the Boston College Department of Earth & Environmental Sciences training library staff, patrons, home-school groups, seniors, teachers, school classes - all citizens who wish to become "citizen scientists" - how to read and analyze data collected from seismic events (earthquakes) around the world.

On October 16, 2012,  a 4.6 quake that shook Hollis, Maine was felt throughout the region. It also happened to occur during a Merrimack Library Trustees' monthly Business meeting and recorded by Merrimack TV.