Richard M. Bloyd

• Approximate ground-water-level contours, April 1981, for the Soquel-Aptos area, Santa Cruz County, California
• Mathematical ground-water model of Indian Wells Valley, California
• Summary appraisals of the Nation's ground water resources, Ohio region
• Summary appraisals of the nation's ground-water resources, Upper Mississippi region
• Underground storage of imported water in the San Gorgonio Pass area, California
• Underground storage of imported water in the San Gorgonio Pass area, southern California