pwĕbˈlō, pyooĕbˈlō, city (1990 pop. 98,640), seat of Pueblo co., S central Colo., on the Arkansas River in the foothills of the Rockies; inc. 1885. It is the center of shipping, retail, and industry for the irrigated Arkansas valley farm area. One of the country's largest steel plants is nearby, as are coal fields and abundant timber. Traditionally a steelmaking center, Pueblo's economy diversified greatly in the 1990s. A trading post, called Pueblo, was established there in 1842, followed by a temporary Mormon settlement (1846–47). The city was laid out in 1860. After a 1921 flood, levees were constructed. The Pueblo Dam and Reservoir, part of a reclamation project serving the Arkansas and Fryingpan rivers, were completed in the 1980s. They are designed to provide irrigation, diversion, and power, as well as flood control. Pueblo is the seat of the Univ. of Southern Colorado and the headquarters for San Isabel National Forest. A large U.S. army ordnance depot is nearby.

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