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FIGURES <br />Number <br />1 The Upper Colorado River Basin (Adapted from Tyus <br />et al. 1982) ......................................... 2 <br />2 Approximate water and suspended-sediment discharge expressed as <br />percentages of the combined streamflow and combined suspended- <br />sediment discharge of the Colorado and Paria Rivers at Lees <br />Ferry, Arizona (From lorns et al. 1965) ...................... 61 <br />3 Equilibrium status of Upper Colorado River Basin rivers (Compiled <br />from Andrews (1986), Chart (1987), Elliot et al. (1984), Garde <br />(1980), Green and Butler (1987), Kellerhals (1980), O'Brien (1987), <br />and U.S. Fish and Wildlife Service (1984a) ................... 85 <br />• <br />4 Cumulative sediment load versus discharge relations showing the <br />percentage of annual total sediment load transported by flows <br />less than or equal to a given discharge at Station 09260050, <br />Yampa River, Deerlodge Park (From Elliot et al. 1984) ......... 107 40 <br />5 Relation between total sediment discharge and spawning period of <br />Colorado squawfish at Mathers Hole (river kilometer 26.4), Yampa <br />River, 1981-1987 (courtesy M. Butter). Solid vertical lines = <br />total period; dashed vertical lines = optimum spawning period <br />(From Tyus and Karp 1989) ............................ 115 <br />6 A comparison of the cruising speeds of four Colorado River fishes <br />with the Arctic grayling (Mac Phee and Watts 1975) at various <br />water temperatures (Modified from Bulkley et al. 1982) ......... 145 <br />7 Comparisons of LC-50's of inorganic toxicants among different fish <br />species (From Kemp et al. 1975) ......................... 254 <br />8 Weighted-average concentration of dissolved solids at selected sites <br />in the Upper Colorado River Basin, water years 1914-1957 adjusted <br />to 1957 conditions (From lorns et al. 1965) ................. 273 <br />xii 0