Title Death Valley regional groundwater flow system, Nevada and California : hydrogeologic framework and transient groundwater flow model / edited by Wayne R. Belcher and Donald S. Sweetkind ; prepared in cooperation with the U.S. Department of Energy, Office of Environmental Management, National Nuclear Security Administration, Nevada Site Office, under Interagency Agreement DE--AI52--01NV13944, Office of Civilian Radioactive Waste Management, under Interagency Agreement DE--AI28--02RW12167, and Department of the Interior, National Park Service.