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<br />w <br />o <br />~ <br />00 <br /> <br />Tne cumulative dOwnstream s2dimenc 10aCinss associace~ with <br /> <br />the prOjected ~edium level of aevelopmenc ~ichout che emer~ins <br /> <br />energy t8cnnologies ~ere computed for each mainstem ~d~ins stacion <br /> <br />in tne study reaChes and are Shown in parent,eses in tne risnt-hano <br /> <br />column of taoles 4-9. <br /> <br />A comparison of tne tocal sediment loacings <br /> <br />~ith the sediment loads estimated for the downStream mdinstem gaging <br /> <br />stations indicate that only in the instances of the ~reen Kiver in <br /> <br />~yomins and Yampa River study reaches would the additional seOimenc <br /> <br />loadings estimated for tne year 2000 exceed 1 percenc of tn~ <br /> <br />estimatea mean-annual sediment loads throu~h 1977. <br /> <br />Tne prOjeCted <br /> <br />sediment loadings at gaying station 09217000 (Green River at Green <br /> <br />~iver, ~iO.) in the year 2000 ~ithout the development of emerginJ <br /> <br />energy teChnologies is 58,000 tons per year or a 41-percent increase <br /> <br />In the estimated mean-annual sedimenc load ac this location. <br /> <br />Most <br /> <br />of this sediment loading riill De the resulc of land disturoance <br /> <br />associated witn population gro~tn in and around the towns of Green <br /> <br />River and Rock Springs. ~yo. <br /> <br />In the Yampa River basin. the prOjected <br /> <br />sediment loading in the year 2000 withouc development of emerging <br /> <br />energy cechnologies ~ill result in a is-percent increase in the <br /> <br />sediment load at gaging station 09244410 (Yampa River below diverSion <br /> <br />near Hayden) and a 7-percent increase at gaging station 09251000 <br /> <br />\Yampa River near ~aybell). <br /> <br />More than 85 percent of tnis sediment <br /> <br />loaaing riill be associated with population srowtn In and arouna <br /> <br />the towns of Steamboat Springs, Hayden. and Craig, Colo. <br /> <br />33 <br />