- Amey, Earle B., 2001, Gold recycling in the United States in 1998: Circular 1196-A, p. A1-A8,
- edited by Karl, Herman A.; Chin, John L.; Ueber, Edward; Stauffer, Peter H.; Hendley, James W., II, 2001, Beyond the Golden Gate; oceanography, geology, biology, and environmental issues in the Gulf of the Farallones: Circular 1198, 78 p.; CD-ROM in pocket,
- Groschen, George E.; Harris, Mitchell A.; King, Robin B.; Terrio, Paul J.; Warner, Kelly L., 2001, Water quality in lower Illinois River basin, Illinois, 1995-98: U.S. Geological Survey, Circular 1209, iv, 36 p. :col. ill., col. maps ;28 cm.,
- Hilliard, Henry E., 2001, Platinum recycling in the United States in 1998: Circular 1196-B, p. B1-B9,
- Jacobson, Robert B.; Femmer, Suzanne R.; McKenney, Rose A., 2001, Land-use changes and the physical habitat of streams - a review with emphasis on studies within the U.S. Geological Survey Federal-State Cooperative Program: Circular 1175, 63 p.,
- Macek-Rowland, K. M.; Burr, M. J.; Mitton, G. B., 2001, Precipitation in the Northern Plains, September 1996 through April 1997: Circular 1185-A, 19 p.,
- Macek-Rowland, K. M.; Burr, M. J.; Mitton, G. B., 2001, Peak discharges and flow volumes for streams in the Northern Plains, 1996-97: Circular 1185-B, 52 p.,
- Papp, John F., 2001, Chromium Recycling in the United States in 1998: Circular 1196-C, p. C1-C10,
- Plachy, Jozef, 2001, Zinc Recycling in the United States in 1998: Circular 1196-D, p. D1-D8,
- Taylor, Charles J.; Alley, William M., 2001, Ground-water-level monitoring and the importance of long-term water-level data: Circular 1217, 68 p.,
