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IT <br />Table 1. Selected decisions and projects influencing the Upper Colorado River <br />system (Adapted from Carlson and Muth 1989). • <br />Laws com,.pacts treaties and other decisions <br />Year Action <br />Rationale or <br />effect <br />1902 Reclamation (Newlands) Created U.S. Reclamation <br />Act Passed Service (Bureau of <br />Reclamation) <br />1915 Dinosaur National Monument <br />and Rocky Mountain National <br />Park established <br />1922 Colorado River Compact Divided Colorado River. <br />signed (Arizona joined water between Upper and <br />1944) Lower Basinsa <br />1929 Boulder Canyon Project Act Authorized Hoover Dam and <br />passed All-American Canal; Congress <br />approved compact of 1922 <br />1934 Fish and Wildlife Provided that federal water <br />Coordination- Act passed project planning must <br />consider impacts on wildlife <br />1944 Mexican Water Treaty Assured Mexico of 1.85 km3/yr <br />signed of Colorado River waters; <br />authorized Davis Dam <br />1948 <br />1956 <br />Upper Colorado River Basin Apportioned Upper Basin water <br />Compact signed to Upper Basin States and Arizonaa <br />Colorado River Storage <br />Project Act passed <br />Authorized Flaming Gorge, Glen <br />Canyon, Navaho and Curecanti <br />projects in Upper Basin <br />is <br />