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Unformatted text preview: waters of the chief rivers in the state-1890 US congress passes rain making experiments -1908 1 st forest experiment sight in Arizona primarily funded to do water research -1910 paired watersheds; test one leave the other alone, see what happens Water Resource Problems: Water becomes a problem when there isnt enough, endangers human safety or becomes an inconvenience 1. Problems of absolute supply (quantity) Not enough:-quantity in context of water year (Oct. 1 st Sept. 30 th ) * Oct. is end of growing season in Northern hemisphere-simply do not have enough water; problem: water importation/ cost issue and water from imported place will run out eventually too-desalinization for fresh water; problems with cost -reduction in evaporation losses in areas of high evaporation...
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- Fall '10