Maps of the Bonsall area of the San Luis Rey River Valley, San Diego County, California showing geology, hydrology, and ground-water quality / by John A. Izbicki ; prepared in cooperation with the Rainbow Municipal Water District
Sheet 1. Well locations -- Sheet 2. Thickness of alluvial fill -- Sheet 3. Water-level contours, November 1983, and hydrographs of selected wells -- Sheet 4. Ground-water quality in spring 1960 and graphs showing changes in dissolved-solids concentration of water from selected wells with time -- Sheet 5. Ground-water quality in spring 1984.