Determination of Land Subsidence Related to Ground-water-level Declines Using Global Positioning System and Leveling Surveys in Antelope Valley, Los Angeles and Kern Counties, California, 1992
U.S. Department of the Interior, U.S. Geological Survey, 1994 - Global Positioning System - 101 pages
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14 in Lancaster accuracy adjustment Angeles County Antelope Valley aquifer system aquifer-system Avenue average Base becomes bench marks Blvd BOUNDARY calculated California changes compaction Continue contour control stations coordinates corner datum decline Department determined differences dirt rq drive edge effective elevation error estimated exit feet Figure ft above ls Geodetic Global Positioning System ground-water height historical HPGN hydrograph increased indicate intersection Lakebed Lancaster land subsidence Last recovered leveling locations magnitude maximum measured mile monitoring monument Note numbers occurred Palmdale period Positioning primary rates rates of subsidence relative Road Rogers Lake Rosamond Blvd selected shows Sierra Highway Sierra Hwy stations Street East stress surface Survey thence Township track USC&GS USGS vector vertical vertical-control stations water-level Water-level elevation West witness post