Satellite-based tech employed by Arizona Dept. of Water Resources has found more than 3,400 square miles of land subsidence in the state

AZGS in the field examining earth fissures with UNESCO, AIPG and AGS.

The ineluctable march of earth fissures in southern Arizona documented in newly revised earth fissure study area maps.

Version 2.0 of the Natural Hazards in Arizona viewer includes more than 8,000 landslide features covering more than 800 square miles.