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<br />. <br /> <br />f> <br /> <br />. <br /> <br />'7 r'. \"' ,., <br />.:lVo,J'.', <br /> <br />g "00 <br />/ <br />The river outlets are designed for ;;5QD c.f.s. and the spillway for <br />a discharge of 27,600 c.f.s. <br /> <br />Quality of Water <br /> <br />The quality of \olater in the South Platte River has been <br />evaluated by chemical analysis as suitable for irrigation. For <br />irrigation purposes the quality of \olater is judged in terms of its <br />influence on crops either directly or through changes in chemical <br />and physical properties of the soil. It is concluded that the project <br />operation will not significantly change the quality of the irrigation <br />waters. <br /> <br />Drainage <br /> <br />Some of the valley and bottom lands along the South Platte River <br />have developed seep areas primarily from excessive use of irrigation <br />water. Additional seep areas have also developed on slopes below <br />irrigation ditches. Increased deliveries to the area from the <br />project may result in new problem areas. Improved control or deli- <br />very of surface irrigation water, coupled \olith ground-water pumping <br />and more drains, will eliminate or reduce drainage problems. <br /> <br />Power Analysis <br /> <br />No feasible plans for the development of power generation as <br />an associated function with irrigation development were found. <br /> <br />DOWNSTREAM EFFECTS <br /> <br />As previously discussed in the water rights section of this <br />Chapter, the Narrows Unit will not be effected by the Colorado- <br />Nebraska Compact since Narrows Dam \olill be located above Balzac, <br />Colorado. As shown on the last line of Table 2, the average annual <br />flow at Julesburg, Colorado, for the period 1947 through 1961 will <br />be reduced from the historic flow of 315,000 acre-feet to 229,900 acre- <br />feet with the Harrows operation. l~onthly flows for historic and. <br />"with project" conditions may be found in colwnns 44 and l+6 of the <br />operation study found in Chapter 5. <br /> <br />10 <br />