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'1 !. A""~' (~ (1 'f . ...J.... . . Pueblo. The floodway is a concrete trape,zoidal channel approximately ~ 10,000 feet long extending through the city. Its present capacity is about 110,000 c.f.s. Barrier Oam 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-feet at 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 dO\-mstream flolis. It is estimated that if the dam had heen 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 liild 1I0rse Creek at 1101 ly, \VoIf Creek at Granada, Arkansas River at La Junta, and numerous agricultural levees along the Arkansas River. These improvements consist of diversions, flood"ays, channel improvements, and levees. I~ 11. AUTHORIZED FLOOD PROTECTIVE f/ORKS.- The Flood Control Act of 1958 authorized the Corps of Engir.eers to construct and operate the multiple-purpose Trinidad Dam and Reservoir Project on the Purgatoire River about 4 miles upstream from the cit)' of Trinidad. The purposes of the project are to provide a high degree of protection from floods on Purgatoire Iliver to the city of Trinidad and the agricultural areas located above and belo" 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 "ill 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-feet for a permanent fishery pool. If the project had been in operation during the flood which occurred on the Purgatoire River in ~Ia)' 1955, over 90 percent of the damages of $1,885,000 would have been prevented. By more effective - - - - - --regu-lahon- and-conservation--of irrigan-onl,-aXer;-n:-rs estimated!llat - -- - - the water suppl)' for t:,is purpose wi I 1 be improved from the present average of 65 percent to an average of 84 percent of the full water supply. Although the dam will practicully eliminate flooding on the Purgatoire ~~rough Trinidad and the highly developed agricultural area belo" the city, the project "ill 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 "as 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 trsnsmountain diversion of "ater from the COlorado River Basin east"ard through the Continental Divide into the head"aters of the Arkansas River Basin. This multiple- purpose project "ill, in addition to providing flood and sediment centrol, incl~de storage for power generation and recreational uses and "ill provide supplemental "ater for irrigati_ol1 ilnd _municipal and_industrial- 4