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USDA Forest Service organization that develops and implements methdologies for study of stream hydrology. Site provides information about physical aspects of wildland streams, especially fluvial geomorphology.
Definitive statistical tables from World Resources 2000-2001 covering Freshwater Resources and Withdrawals, Groundwater and Desalinization, and Major Watersheds of the World. (Tables are in Adobe Acrobat PDF format only.)
Provides comparative ecological and other information about 16 of the world's major rivers: Congo, Mississippi, Columbia, Blackstone, Volga, Ganges, Pawtuxet, Connecticut, Colorado, Amazon, Missouri, Murray-Darling, Hudson, Nile, Euphrates, and Housatonic.
Information about Riparian Management Systems how they help protect water quality through nitrate, phosphorus, and sediment removal. Site from Iowa State University includes details of project sites, FAQs, publications, and research details.
Essay by J. G. Imhof of Ontario Ministry of Natural Resources. Includes a classification of stream types (with examples from Ontario) and explains how different streams favor different species.