- Cobb, Ernest D.; Biesecker, J. E., 1971, The national hydrologic bench-mark network: U.S. Dept. of the Interior, Geological Survey, Circular 460-D, iv, 38 p. :ill., map ;26 cm.,
- Durum, W. H.; Hem, John David; Heidel, Sumner Griggs., 1971, Reconnaissance of selected minor elements in surface waters of the United States, October 1970: U.S. Dept. of the Interior, Circular 643, vi, 49 p. :maps. ;26 cm.,
- Geological Survey (U.S.), 1971, Index of surface-water records to September 30, 1970; Part 1, North Atlantic slope basins: U.S. Dept. of the Interior, Geological Survey, Circular 651, 89 p. ;27 cm.,
- Geological Survey (U.S.), 1971, Index of surface-water records to September 30, 1970; Part 3, Ohio River basin: U.S. Dept. of the Interior, Geological Survey, Circular 653, 71 p. ;28 cm.,
- Geological Survey (U.S.), 1971, Index of surface-water records to September 30, 1970; Part 4, St. Lawrence River basin: U.S. Dept. of the Interior, Geological Survey, Circular 654, 43 p. ;28 cm.,
- Geological Survey (U.S.), 1971, Index of surface-water records to September 30, 1970; Part 5, Hudson Bay and Upper Mississippi River basins: U.S. Dept. of the Interior, Geological Survey, Circular 655, 65 p. :ill ;27 cm.,
- Geological Survey (U.S.), 1971, Index of surface-water records to September 30, 1970; Part 6, Missouri River basin: U.S. Dept. of the Interior, Geological Survey, Circular 656, 91 p. :ill ;27 cm.,
- Geological Survey (U.S.), 1971, Index of surface-water records to September 30, 1970; Part 8, Western Gulf of Mexico basins: U.S. Dept. of the Interior, Geological Survey, Circular 658, 53 p. :map ;27 cm.27 cm.,
- Geological Survey (U.S.), 1971, Index of surface-water records to September 30, 1970; Part 9, Colorado River basin: Circular 659, 55 p.,
- Geological Survey (U.S.), 1971, Index of surface-water records to September 30, 1970; Part 10, The Great Basin: U.S. Dept. of the Interior, Geological Survey, Circular 660, 39 p. :ill., map ;26 cm.,
- Geological Survey (U.S.), 1971, Index of surface-water records to September 30, 1970; Part 11, Pacific slope basins in California: U.S. Dept. of the Interior, Geological Survey, Circular 661, 53 p. :ill. ;28 cm.,
- Geological Survey (U.S.), 1971, Index of surface-water records to September 30, 1970; Part 12, Pacific slope basins in Washington and upper Columbia River basin: U.S. Dept. of the Interior, Geological Survey, Circular 662, 40 p. :ill. ;27 cm.,
- Geological Survey (U.S.), 1971, Index of surface-water records to September 30, 1970; Part 13, Snake River basin: U.S. Dept. of the Interior, Geological Survey, Circular 663, 29 p. :ill ;27 cm.,
- Geological Survey (U.S.), 1971, Index of surface-water records to September 30, 1970; Part 14, Pacific slope basins in Oregon and lower Columbia River basin: U.S. Dept. of the Interior, Geological Survey, Circular 664, 31 p. :ill. ;27 cm.,
- Geological Survey (U.S.), 1971, Index of surface-water records to September 30, 1970; Part 15, Alaska: U.S. Dept. of the Interior, Geological Survey, Circular 665, 21 p. :ill. ;27 cm.,
- Geological Survey (U.S.), 1971, Index of surface-water records to September 30, 1970; Part 16, Hawaii and other Pacific areas: U.S. Dept. of the Interior, Geological Survey, Circular 666, 27 p. :ill. ;27 cm.,
- Godwin, Larry H.; Haigler, L. B.; Rioux, R. L.; White, D. E.; Muffler, L. J.; Wayland, R. G., 1971, Classification of public lands valuable for geothermal steam and associated geothermal resources: U.S. Dept. of the Interior, Geological Survey, Circular 647, iii, 18 p. :maps ;26 cm.,
- Harris, David Dell; Williams, Robert Charles, 1971, Streamflow, sediment-transport, and water-temperature characteristics of the three small watersheds in the Alsea River basin, Oregon: [U.S. Geological Survey], Circular 642, v, 21 p. :illus., map. ;26 cm.,
- Leopold, Luna Bergere; Clarke, F. E.; Hanshaw, B. B.; Balsley, J. R., 1971, A procedure for evaluating environmental impact: U.S. Dept. of the Interior, Circular 645, 13 p. :illus. ;26 cm.; 1 plate,
- Mansfield, George Rogers, 1971, Origin of the Brown Mountain light in North Carolina: [U.S. Geological Survey], Circular 646, v, 18 p. :map. ;26 cm.,
- Rickert, David A.; Spieker, Andrew Maute., 1971, Real-estate lakes: [U.S. Geological Survey], Circular 601-G, vii, G1-G19 p. :illus. ;26 cm.,
- Shacklette, Hansford T.; Boerngen, Josephine G.; Turner, Robert L., 1971, Mercury in the environment; surficial materials of the conterminous United States: [U.S. Geological Survey], Circular 644, 5 p. :illus. ;26 cm.,
- Weld, Betsy A.; Griffin, Margaret S.; Brett, George W., 1971, Reports and maps of the Geological Survey released only in the open files, 1970: U.S. Dept. of the Interior, Geological Survey, Circular 638, 23 p. :26 cm.,
