Index to Figures
from
Chapter from Current Research and Case Studies of Land Subsidence: Proceedings of the Dr. Joseph F. Poland Symposium on Land Subsidence, Association of Engineering Geologists Special Publication No. 8, Published by Star Publishing Company, Belmont, CA 94002-0068 (in press)
Figure 1. Location map of Antelope Valley.
Figure 2. Map of 1915 (predevelopment) ground-water levels in the principal aquifer of the Lancaster ground-water subbasin.
Figure 3. Graphs showing A) historical ground-water demand and imported water supplies, and B) historical and forecast irrigated acreage. (modified from Templin and others, 1995)
Figure 4. Land-use maps showing irrigated acreage and urban acreage for the years, A) 1961, and B) 1991.
Figure 5. Maps of ground-water levels in the principal aquifer of the Lancaster ground-water subbasin for the years, A) 1960, and B) 1991.
Figure 6. Map showing the decline in ground-water levels in the principal aquifer of the Lancaster ground-water subbasin for the period, 1915-1991.
Figure 7. Graphs showing historical, paired water levels in wells and land subsidence measured at nearby benchmarks for two sites, A) well 7N/12W-15F1 and benchmark BM 474, and B) well 7N/10W-05E1 and benchmark BM 1171A. (modified from Ikehara and Phillips, 1994) Locations of wells and benchmarks are shown on Figure 1.
Figure 8. Map of land subsidence measured during the period, 1930 - 1992. (modified from Ikehara and Phillips, 1994).
California District home page or USGS Water Resources Information home page or USGS home page .
Fig. 1
Fig. 2
Figs. 3a and 3b
Figs. 4a and 4b
Figs. 5a and 5b
Fig. 6
Figs. 7a and 7b
Fig. 8