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Oil Shale Diversion Point Sheep Creek Piceance Creek Yellow Creek *Inc1udes 6000 acre-feet Annual Diversion* (acre-feet) 26,300 13,100 13,100 originally allocated for coal. I I I I I I I I I I I I I I I I , I I Severa 1 water' de 1 i very poi nts were incorporated into the operat i on study for each alternative plan. Diversion points for the agricultural and coal water supplies werE' in the upper basin, while municipal and domestic water was assumed to bE left in the river for diversion in the vicinity of Meeker. Oil shale demands were diverted from the mainstem of the White River at three locaticns: near Sheep Creek, near Piceance Creek, and near Yellow Creek. The annual water delivery at each of these three locations was assumed to be as follows: Return Flows The industrial water deliveries were assumed to be totally consumed and therefore represented a total depletion to the river system. Municipal, domest ic, and agricu ltura 1 water deli veri es, however, wi 11 not be one-hundred percent consumptively used and the operation studies had to account for the return flow component. It was assumed that sprinkler irrigation systems. would be installed on the project's lands and that the cropping pattern would be more diversified than the present. It was ,estimated that 2'5 percent of the water divertl~d for agricultural use, 4500 acre-feet per year, would return to the Whi:e River at locations upstream of the stream gage point above Meeker. It was assumed that 50 percent of the return flow would occur in the month of diversion and that the remaining 50 percent would reach the river in the month following. Return flow from municipal and domestic use varies during the season. It was estimated that 50 percent of the March-through-September use and 80 percent of the winter use would be returned to the river. The annual volume of return flow from project-supplied municipal and domestic water was V-6