Land Subsidence in California
New USGS reports on subsidence at Edwards Air Force Base in Southern California and on Twitchell Island in the Sacramento-San Joaquin Delta examine the problem
Land subsidence from ground-water pumping
Land subsidence, the loss of surface elevation due to removal of subsurface support, occurs in nearly every state in the United States. Subsidence is one of the most diverse forms of ground failure, ranging from small or local collapses to broad regional