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Welcome to the Encyclopedia of Arkansas
This Day in Arkansas History
July 24, 1946
The U.S. Congress passed the Rivers and Harbors Act authorizing the building of the McClellan-Kerr Arkansas River Navigation System, which included plans for hydropower, flood control, recreation, and navigation from Catoosa, Oklahoma, to the Mississippi River. Only $55 million was authorized initially, with later funding to be approved on a year-to-year, dam-by-dam basis. The system ultimately added billions of dollars in river transportation to the economies of both Arkansas and Oklahoma.
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About the Encyclopedia
The CALS Encyclopedia of Arkansas is a free, authoritative source of information about the rich history, geography, and culture of Arkansas. It is updated regularly to ensure the people of Arkansas have an accurate and accessible resource to explore our heritage. We invite you to browse our text entries and media galleries to learn more about the people, places, events, legends, and lore of the 25th state. We are continually adding new entries, photographs, maps, videos, quizzes, lesson plans, and more, so check back frequently to see what’s new.
Our overview page covers everything you would want to know about our beautiful state, including state symbols, demographics, and more!
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