1. Geodetic network to evaluate historical elevation changes and to monitor land subsidence in lower Coachella Valley, California, 1996 Yale Public content 1997. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Information Services. English. Public. California, Coachella Valley, Coachella Valley., and Coachella Valley (Calif.).