From the latter 2000s to the present, Arroyo Seco and the rest of the Sierra Gorda in Querétaro have been experiencing numerous small earthquakes, with most registering from 2.5 to 3.5 on the Richter scale, generally imperceptible to humans. Seismologists say that while the number has been unusual, such activity is not and is due to the settling of the sedimentary rock which is below most of the Sierra Gorda region. However, Arroyo Seco and other municipalities have seismographs installed to monitor the situation.