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JQ"? .. ,,'-.... . . facilities, and rural businesses. There are "bout 1(, miles of the Federal highway system, about 30 miles of State roads, and 100 miles of county and other roads subject to dam"ge. A total of 21 highway hridges, including 5 in the city of Pueblo, are located in the flood plain, Approximately 40 miles of AT~SF, ~1issouri Pacific, and Denver and Rio Grande railroads ond (, bridges are subject to inundation, scour, and damage from debris. POI'er and telephone I ines and appurtenant structures such as switch yards arc also subject to flood damage. 72. Urban developments along the Arkansas River bet"een Pueblo and Juhn elartin Dam are generally located above the flood plain. Ilow- ever, serious flood problems exist in the major municipalities of Pueblo, La Junta, and Las Animas. 73. The city of Pueblo is provided a high degree of protection from floods on Arkansas River by the Barrier Darn-Pueblo F100dway proj- ect constructed by local interests in 1925 and extended by the Corps of Ene1neers in 1952. An area of about 3 square miles containing millions of dollars 0f commercial un(] industrial development is pro- tecteJ by the i!l\prov~n1Cnt. 110"I""e1', the city is subject to flooding frorr, Dry Creek and fountain Crcek. tributaries of the Arkansas fronl the north. 74. The P.rkansas River flood plain encompasses about 330 acres of the urban and suburban arca of La Junta located about 70 miles down- stream from Pueblo. North La Junta, a suburban area on the north side of the river, is the most vulnerable to flood damage, About 250 resi- dences, a fe" neighborhood businesses, a school, and a church are located in a frequently flooded portion of the flood plain. Most of the commercial and urban developments are located on the south side of the river in the city of La Junta. ^lthough the area subject to flooding-from -the_Arkansas l\iy~,!: j.~_L!,_Junta is smaller than in North La Junta, it contains a larger number of commercial ins~tanations in- cluding 10 business units and about SO residences. La Junta also has a significant flood rrob1em from King and Anderson Arroyos. 75. The area subject to flooding by the Arkansas River at Las Animas includes about 740 acres or urban and suburban lands. Improve- ments include about 1,050 residential units, 150 business units located mostly in the main business district, schools, churches, public buildings, and utility plants. Mthough the authorized Las Animas Local Protection Project will provide a high degree of protection, the city is still subject to inundation from infrequent large magnitude floods. All of the city would be inundated by a flood of standard project magnitude, except 10 to IS blocks in the "est-central section which would be isolated. 76. NATURE OF FLOOD DAMAGES. - Principal losses from Arkansas River floods upstream from John ~lartin Darn arc the result of inundation, 27