20250506 13361000 1.0 TRUE D4_187_Proposed_WV_JT_Groundwater_Basins This shapefile was created from the boundary of the Warren Valley Basin from i08_B118_v5-1.shp dated 08/14/2017 (Bulletin 118 Interim Update 2016), downloaded by Mojave Water Agency on 02/22/2018. The boundary was clipped at the Yucca Barrier. The yucca barrier was digitized from Figure 12 “Water-level elevations in Warren Valley basin, spring 1969” on page 35 of “Ground-water resources of the Yucca Valley-Joshua Tree area, San Bernardino County, California”. USGS Open-File Report 72-234 written by R.E. Lewis. Warren Valley Basin, i08_B118_v5-1.shp, California Department of Water Resources, Bulletin 118 Interim Update 2016. Yucca Barrier, USGS Open-File Report 72-234 written by R.E. Lewis.