• 473 Geology and Geophysics Library (Leith)
• 19 Wisconsin's Water Library
• 3 Memorial Library
• 2 Verona Shelving Facility
• 1 Limnology Library
• 1 Map Library (Robinson)

• 1,176 Books
• 60 Microforms
• 49 Maps, Atlases
• 11 Journals, Magazines, Newspapers
• 2 Computer file

• 513 Stream measurements
• 186 Water quality
• 113 Mathematical models
• 99 Stream-gaging stations
• 84 Watersheds
• 75 Computer simulation
• 69 Water-supply
• 63 Water
• 61 Groundwater
• 61 Rivers
• 59 Environmental aspects
• 56 Floods
• 50 Hydrology
• 49 Groundwater flow
• 41 Runoff
• 37 Flood forecasting
• 33 Drainage
• 33 Precipitation (Meteorology)
• 25 Bodies of water
• 24 Sediment transport
• 22 Pollution
• 22 Suspended sediments
• 21 Climatic changes
• 21 Observations

• 41 United States. Bureau of Reclamation
• 31 United States. Congress. House
• 25 United States. Army. Corps of Engineers
• 22 Grover, Nathan Clifford
• 22 United States. National Park Service
• 21 Thomas, M. P. (Mendall Patterson), 1908-1988
• 21 United States. Environmental Protection Agency
• 18 Eisenhuth, H. P.
• 17 Eisenhuth, H. P
• 17 United States. Bureau of Land Management
• 15 Anderson, B. A
• 15 Asquith, William H
• 15 U.S. Fish and Wildlife Service
• 14 Hodgkins, Glenn
• 14 National Water-Quality Assessment Program (U.S.)
• 12 Dudley, Robert W
• 12 Holtschlag, David J
• 12 New Jersey. Department of Environmental Protection
• 12 United States. Federal Emergency Management Agency
• 11 Koltun, G. F
• 11 Pennsylvania. Department of Environmental Protection
• 11 Tasker, Gary D
• 10 Kansas Water Office
• 10 Kjelstrom, L. C

• 1,234 English
• 3 Spanish

• 85 United States
• 57 Texas
• 40 Colorado
• 39 Florida
• 35 Massachusetts
• 34 California
• 34 Connecticut
• 32 Arizona
• 30 Oregon
• 30 Washington (State)
• 27 Montana
• 26 Alaska
• 25 Kansas
• 25 Pennsylvania
• 24 Hawaii
• 24 Maine
• 23 Idaho
• 21 New Mexico
• 20 Colorado River (Colo.-Mexico)
• 20 New York (State)
• 18 North Carolina
• 17 Iowa
• 17 Missouri
• 17 New Jersey
• 16 Ohio

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