<P> The Lake of the Ozarks is a large reservoir created by impounding the Osage River in the northern part of the Ozarks in central Missouri . Extents of three smaller tributaries to the Osage are included in the impoundment: the Niangua River, Grandglaize Creek, and Gravois Creek . The lake has a surface area of 54,000 acres (220 km) and 1,150 miles (1,850 km) of shoreline, and the main channel of the Osage Arm stretches 92 miles (148 km) from end to end . The total drainage area is over 14,000 square miles (36,000 km). The lake's serpentine shape has earned it the nickname "The Magic Dragon", which has in turn inspired the names of local institutions such as The Magic Dragon Street Meet . </P> <P> A hydro - electric power plant on the Osage River was first pursued by Kansas City developer Ralph Street in 1912 . He put together the initial funding and began building roads, railroads, and infrastructure necessary to begin construction of the dam, with a plan to impound a much smaller lake . In the mid-1920s, Street's funding dried up and he abandoned the effort . </P> <P> The lake was created by the construction of the 2,543 - foot (775 m) long Bagnell Dam by the Union Electric Company of St. Louis, Missouri . The principal engineering firm was Stone and Webster . Construction began August 8, 1929, was completed in April 1931, and reached spillway elevation on May 20, 1931 . During construction, the lake was referred to as Osage Reservoir or Lake Osage . The Missouri General Assembly officially named it Lake Benton after Senator Thomas Hart Benton . None of the names stuck, as it was popularly referred to by its location in the Ozarks . The electric generating station, however, is still referred to by the utility company as the "Osage Hydroelectric Plant". </P> <P> At the time of construction, the Lake of the Ozarks was the largest man - made lake in the United States and one of the largest in the world . It was created to provide hydroelectric power for customers of Union Electric, but it quickly became a significant tourist destination for the Midwest . Most of its shoreline is privately owned, unlike many flood - control lakes in the region that were constructed by the U.S. Army Corps of Engineers . The relatively stable surface elevation has created ideal conditions for private development within a few feet of the shoreline . There are over 70,000 homes along the lake, many of which are vacation homes . Spectacular scenery characteristic of the Ozarks has also helped to transform the lake into a major resort area, and more than 5 million people visit annually . </P>

When was the lake of the ozarks made
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