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<br />Table 1. - Backwater characteristics for the upper and lower reaches of the Green River, <br />1989 ISMP, September 27 and 28, 1989 (flow at GS Jensen gauge = 1,023-1,420 fe/s; <br /> flow at GS Green River, Utah, gauge = 1,590-1,660 ft3/S) <br />River-mile Backwaters Backwaters/ Area Area/mile Mean size S* <br /> mile (m~ (m~ (m~ <br />Lower reach <br />0-15 12 0.8 4,278 285 357 524 <br />16-35 19 1.0 12,412 621 653 1,043 <br />36-55 23 1.2 17,272 864 751 1,063 <br />56-75 24 1.2 16,588 829 691 867 <br />76-95 15 0.8 5,175 259 345 455 <br />96-115 16 0.8 10,449 522 653 832 <br />116-120 7 1.4 2,284 457 326 366 <br />Total reach 116 1.0 68,457 570 590 866 <br />(0-120) <br />UDDer reach <br />200-215 30 2.0 32,986 12,199 1,100 2,521 <br />216-235 56 2.8 46,110 2,306 823 1,299 <br />236-255 81 4.0 71,589 3,579 884 1,765 <br />256-275 93 4.6 55,893 2,795 601 1,245 <br />276-295 95 4.8 42,035 2,102 442 624 <br />296-315 51 2.6 32,008 1,600 628 1,242 <br />316-317 1 1.0 12 <br />Total reach 407 3.4 280,632 2,378 690 1,414 <br />(200-317) <br />* Standard deviation. <br /> <br />11 <br />