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. ". r' :"i l~ J.. V \.1 '. Pueblo. The floodway is a concrete trapezoidal channel approximately 10,000 feet long extending through the city. Its present capacity is about 110,000 c.f.s. Barrier Dam is a concrete gravity and earthfill retarding structure across the Arkansas River about 6 miles above Pueblo. The dam, with a reservoir storage capacity of 21,000 acre~feetat spill- way crest, was designed to regulate,major floods to the capacity of the floodway through Pueblo. The structure also has a regulating effect on downstream flows. It is estimated that If the dam had been in place prior to the 1921 flood, the flood peak at Las Animas would have been reduced from 187,000 c.f.s. to 140,000 c.f.s. , , , 10. Local flood protection works of smaller scope have been con- structed by local interests on Fountain Creek at Colorado Springs and Wild Horse Creek at Holly, Wolf Creek at Granada, Arkansas River at La Junta, and numerous agricultural levees along the Arkansas River. These improvements consist of diversions, floodways, channel improvements, and levees. ,11. AUTHORIZED FLOOD PROTECTIVE WORKS. - The Flood Control Act of 1958 authorized the Corps of Engineers to construct and operate the multiple-purpose Trinidad Dam and Reservoir Project on the Purgatoire River about 4 miles upstream from the city of Trinidad., The purposes of the project are to provide a high degree of protection from floods on Purgatoire River to the city of Trinidad and the agricultural areas located above and below the city, a more dependable water supply for the irrigated lands below the city, and recreational opportunities. .' 12. The total storage capacity of the reservoir will be 114,500 acre-feet of which 59,000 is allocated'to irrigation and sediment reserve, 51,000 to flood control, and 4,500 acre-f~et for a permanent fishery pool. If the project had been'in operation during the flood which occurred on the Purgatoire River in May 1955, over 90 percent of the damages of $1,885,000 would have been prevented. By more effective regulation and conservation of irrigation water, it is estimated that the water supply for this purpose will be improved from the present average of 65 percent to an average of 84 percent of the full water supply. Although the dam will practically eliminate flooding on the Purgatoire through Trinidad and the'highly developed agricultural area below the city, the project will not have an important effect on flood peaks at the mouth of the Purgatoire River just below Las Animas. Construction was initiated in 1967. ' 13. Pursuant to Public Law 590, 87th Congress, the Fryingpan- Arkansas Project was authorized for construction, operation, and main- tenance by the Bureau of Reclamation. The project plan consists of a system of canals, tunnels, and reservoirs for transmountain diversion of water from the Colorado River Basin eastward through the Continental Divide into the headwaters of the Arkansas River Basin. This multiple- purpose project will, in addition to providing flood and sediment control, include storage for power generation and recreational uses and will provide supplemental water for irrigation and municipal and industrial , '. !. -'.:1t.."". ~ '-.;t._\1 4 , , - l