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<br />Future Condition - Additional Surface Water and Ground-water Development <br /> <br />A future condition with additional surface water and ground-water <br />development was established which has the following characteristics: <br /> <br />1. Additional ground-water development in Nebraska. <br /> <br />2. Flows of the Laramie River fully depleted. <br /> <br />3. Flows at Jul esburg reflecting upstream development approaching the <br />South Platte Compact limits; including Narrows Reservoir, and fully <br />depleting the Cache la Poudre River and Lodgepole Creek. <br /> <br />4. Little Blue and Prairie Bend projects operational in Nebraska. <br /> <br />Thi s condition represents the "worst case" exami ned. Additi onal ground- <br />water development will allow another 1.8 million acres to be irrigated <br />in Nebraska. Depleting the Laramie River results in 64,100 acre-feet/ <br />year being consumptively used in Wyoming for irrigation, municipal, and <br />industrial purposes. If the flows at Julesburg approach the compact <br />limits, an additional 225,500 acre-feet can be used in Colorado. The <br />Little Blue and Prairie Bend Units divert 106,000 and 80,000 acre-feet, <br />respectively, in this alternative. Table 16 presents the estimated flow <br />conditions for each of the points examined in the study area. <br /> <br />This future condition has a tendency to even out the South Platte flows <br />at Julesburg. The average monthly flows range from 3,400 acre-feet in <br />September to 16,600 acre-feet in February. On an annual basis, the flow <br />decreased by 64 percent when compared against the future condition <br />without addi ti onal ground-water development. The s ituati on is most <br />critical in May and June when the flows declined by 99 and 85 percent, <br />respectively. The annual flows at Overton and Grand Island declined by <br />57 and 69 percent, respectively. <br /> <br />A graphic presentation of the average monthly flows for each of the <br />alternatives at the Julesburg, Colorado, and Lewellen and Overton, <br />Nebraska, locations are shown in figures 3, 4, and 5. <br /> <br />58 <br />