The percentage of no-response wells is similar for the Mw 7.9Wenchuan and Mw9.0Tohoku earthquake (25.7% and 22%), and also similar for the 2007 and 2012 Sumatra earthquakes (42% and 43%). The most common type of the coseismic response is water level oscillations, followed by no response, and the least frequently observed response is an oscillation-gradual change.