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1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, and 2000. California Geological Survey. This point shapefile depicts landslides too small to delineate at 1:24,000 scale (typically less than 1/5 acre in area or less than 150 feet in len... California Geological Survey.
2002. California. Division of Mines and Geology and California. Department of Conservation. This point shapefile contains landslide data for the Jackson Demonstration State Forest (JDSF), which is predominantly located on the coastal side ... California. Division of Mines and Geology.