- Allen, Howard E.; Grant, R. Stephen., 1971, Floods in Hebron Quadrangle, Northeastern Illinois: Hydrologic Atlas 363, 1 col. map ;58 x 43 cm., on sheet 77 x 122 cm.,
- Allen, Howard E.; Noehre, Allen W., 1971, Floods in Wilmington Quadrangle, Northeastern Illinois: Hydrologic Atlas 306, 1 col. map ;58 x 44 cm., on sheet 77 x 132 cm.,
- Allen, Howard E.; Noehre, Allen W., 1971, Floods in Channahon Quadrangle, Northeastern Illinois: Hydrologic Atlas 362, 1 col. map ;58 x 44 cm., on sheet 78 x 133 cm.,
- Coffin, Donald L.; Welder, Frank A.; Glanzman, Richard K., 1971, Geohydrology of the Piceance Creek structural basin between the White and Colorado Rivers, northwestern Colorado: Hydrologic Atlas 370, 2 maps on 2 sheets :col. ;104 cm. x 127 cm., folded to 26 x 22 cm., in envelope 30 x 24 cm.,
- Devaul, Robert Washburn; Green, J. H., 1971, Water resources of Wisconsin--central Wisconsin River basin: Hydrologic Atlas 367, 9 maps on 4 sheets :col. ;31 x 24 cm. or smaller, sheets 73 x 84, each sheet folded to 26 x 21 cm., in envelope 30 x 24 cm.,
- Downey, Joe S., 1971, Ground-water resources of Walsh County, northeastern North Dakota: Hydrologic Atlas 431, 1 map :col. ;75 x 85 cm., folded in envelope 31 x 24 cm.,
- Ellis, M. J.; Adolphson, D. G., 1971, Hydrogeology of the Pine Ridge Indian Reservation, South Dakota: Hydrologic Atlas 357, 1 map on two sheets.,
- Ellis, M. J.; Ficken, James H.; Adolphson, D. G., 1971, Hydrology of the Rosebud Indian Reservation, South Dakota: Hydrologic Atlas 355, 1 map on two sheets.,
- Emery, Philip A., 1971, Hydrology of the San Luis Valley in south-central Colorado: Hydrologic Atlas 381, 2 maps :col. ;81 x 46 cm. on 2 sheets 80 x 102 cm. folded to 26 x 20 cm. in envelope 30 x 24 cm.,
- Fenzel, Frank Walker; Price, McGlone, 1971, Flood of January 1969 near Carpinteria, California: Hydrologic Atlas 422, 1 map.,
- Feulner, Alvin J., 1971, Water-resources reconnaissance of a part of the Matanuska-Susitna Borough, Alaska: Hydrologic Atlas 364, 1 map.,
- Fields, Fred K., 1971, Floods in the Anasco area, Puerto Rico: Hydrologic Atlas 375, 16 leaves :ill., maps (some col.) ;28 cm.,
- Fields, Fred K., 1971, Floods in Yabucoa area, Puerto Rico: Hydrologic Atlas 382, 1 map.,
- Gann, E. E., 1971, Water resources of northeastern Missouri: Hydrologic Atlas 372, 1 map on four sheets.,
- Gebert, W. A., 1971, Low-flow frequency of Wisconsin streams: Hydrologic Atlas 390, 1 map :col. ;72 x 79 cm., folded in envelope 30 x 24 cm.,
- Giessner, Frank W.; Price, McGlone, 1971, Flood of January 1969 near Azusa and Glendora, California: Hydrologic Atlas 424, 1 map.,
- Gilbert, Bruce K.; Kammerer, John C., 1971, Hydrology of the Genesee River basin, New York and Pennsylvania: Hydrologic Atlas 368, 1 map on four sheets.,
- Haire, William J., 1971, Floods in Patillas-Maunabo area, Puerto Rico: Hydrologic Atlas 445, 1 map.,
- Haire, William J., 1971, Floods in Guayama area, Puerto Rico: Hydrologic Atlas 446, 1 map.,
- Haire, William J., 1971, Floods in Salinas area, Puerto Rico: Hydrologic Atlas 447, 1 map.,
- Haire, William J., 1971, Floods in Santa Isabel area, Puerto Rico: Hydrologic Atlas 448, 1 map.,
- Hendrickson, G. E.; Doonan, C. J., 1971, Reconnaissance of the Sturgeon River, a cold-water river in the north-central part of Michigan‘s southern peninsula: Hydrologic Atlas 353, 1 map on two sheets.,
- Hendrickson, G. E.; Doonan, C. J., 1971, Reconnaissance of the Black River, a cold-water river in the north-central part of Michigan‘s southern peninsula: Hydrologic Atlas 354, 1 map on two sheets.,
- Hendrickson, G. E.; Doonan, C. J., 1971, Reconnaissance of the Pere Marquette River, a cold water river in the central part of Michigan‘s Southern Peninsula: Hydrologic Atlas 384, 1 map on two sheets.,
- Knutilla, R. L., 1971, Water resources of the River Rouge basin southeastern Michigan: Hydrologic Atlas 356, 7 col. maps, on 2 sheets ;78 x 103 cm. or smaller fold. to 26 x 22 cm. or smaller +1 pamphlet (12 p. ; 28 cm.),
- Oster, E. A., 1971, Floods on selected reaches of Elk Creek, Douglas County, Oregon: Hydrologic Atlas 388, 1 map.,
- Post, Austin; Mayo, L. R., 1971, Glacier dammed lakes and outbursts floods in Alaska: Hydrologic Atlas 455, 2 maps, 1 photographic display :col. ;folded in envelope 30 x 24 cm. +1 pamphlet (10 p ; 28 cm.),
- Price, McGlone, 1971, Floods in the vicinity of Ellijay, Georgia: Hydrologic Atlas 418, 1 map.,
- Robison, J. H., 1971, Hydrology of basalt aquifers in the Hermiston-Ordnance area, Umatilla and Morrow Counties, Oregon: Hydrologic Atlas 387, 1 map on two sheets.,
- Robison, J. H., 1971, Availability and quality of ground water in the Medford area, Jackson County, Oregon: Hydrologic Atlas 392, 1 map on two sheets.,
- Shearman, James O.; Holmstrom, B. K., 1971, Floods on Rock River in northeastern Jefferson County, Wisconsin: Hydrologic Atlas 394, 1 map.,
- Shearman, James O.; Holmstrom, B. K., 1971, Floods on Rock River in southwestern Jefferson County, Wisconsin: Hydrologic Atlas 413, 1 map.,
- Singer, John A.; Price, McGlone, 1971, Flood of January 1969 near Ventura, California: Hydrologic Atlas 423, 1map :col. ;76 x 100 cm. folded in envelope 30 x 24 cm.,
- Singer, John A.; Price, McGlone, 1971, Flood of January 1969 near Cucamonga, California: Hydrologic Atlas 425, 1 map.,
- Sloan, Charles E.; Garber, M. S., 1971, Ground-water hydrology of the Mescalero Apache Indian Reservation, south-central New Mexico: Hydrologic Atlas 349, 1 map.,
- Stewart, Joseph W., 1971, Potentiometric surface and areas of artesian flow, May 1969, and change of potentiometric surface 1964 to 1969, Floridan aquifer, Southwest Florida Water Management District, Florida: Hydrologic Atlas 440, 1 map.,
- Swallow, L. A.; Petersen, Richard G.; Searles, G. H., 1971, Flood of March 1968 on the Charles River, Massachusetts: Hydrologic Atlas 419, 1 map on two sheets.,
- Takasaki, K. J., 1971, Ground water in the Waianae District, Oahu, Hawaii: Hydrologic Atlas 358, 1 map on two sheets.,
- Walter, Gerald L.; Mycyk, Roman T., 1971, Floods in Huntley Quadrangle, Northeastern Illinois: Hydrologic Atlas 361, 1 col. map ;58 x 43 cm., on sheet 80 x 110 cm.,
- Wilder, Hugh B.; Slack, Larry J., 1971, Chemical quality of water in streams of North Carolina: Hydrologic Atlas 439, 4 maps on two sheets :col. ;55 x 84 cm.,
