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<br />4-16-52
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<br />Sediment control
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<br />Sediments transported by the Arkansas River constitute a
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<br />"perennial problem and expense to the water users in the Arkansas
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<br />Valley through deposition at the headworks, in the canals and
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<br />reservoirs, and on the irrigated land. Provisions are made in
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<br />the proposed Pueblo Reservoir for the capture of about 944 acre-feet
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<br />of sedilllent annually. Because the heavy bed load is characteristic
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<br />of the headwater strealll8, the reUefto the downstream water users
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<br />would be greater than that indicated by the proportion of the sedi-
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<br />rnent retai.ned.
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<br />It is estiIMted that the control of sediment in Pueblo Reser-
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<br />voir would result in an annual J;laving in operating ecxpense to
<br />downstream users in the amount of ~141~OOO.
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<br />Benefit-Cost comparison
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<br />5umnll.r1zing the estimated annual tangible benefits resulting
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<br />from the proposed project development we have:
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<br />Agricultural benefits. . . . . . $ 2,903,000
<br />Hydroelect.ric power. . . . . . . 4,064,000
<br />Nunicipal water. . . .. . . . . . l,662,OOO
<br />Flood control. . . . . . . . 583,000
<br />Sediment control . . . . . . . . 141,000
<br />Total benefits . . . . . . . $ 9,353,000
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<br />The annual equivalent Federal oost of the Fryingpan../l.rkansas
<br />Project is estiIMted at $5,566,000. 'l:'his cost includes annual
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<br />operation, maintenance and replacement reserve, and an annual
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<br />equivalent investment cost based on amortization of the net
<br />public investment in construction cost at 2-1/2 percent interest
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<br />in 100 years.
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