does it have any dam over it?
Yes, Black Eagle Dam, Ryan Dam, Canyon Ferry Dam, etc.
Missouri River
Between 1890 and 1940, five dams were built in the vicinity of Great Falls to generate power from the Great Falls of the Missouri, a chain of giant waterfalls formed by the river in its path through western Montana. Black Eagle Dam, built in 1891 on Black Eagle Falls, was the first dam of the Missouri. Replaced in 1926 with a more modern structure, the dam was little more than a small weir atop Black Eagle Falls, diverting part of the Missouri's flow into the Black Eagle power plant. The largest of the five dams, Ryan Dam, was built in 1913. The dam lies directly above the Big Falls, the largest waterfall of the Missouri.
what river forms the border between iowa and nebraska UNANSWERABLE which are the main tributaries of the missouri river? James, Big Sioux, Grand River systems etc. where does it originate from? It officially starts at the confluence of the Jefferson and Madison in Missouri Headwaters State Park near Three Forks, Montana.
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Missouri River [SEP] Dam-building era
In the late 19th and early 20th centuries, a great number of dams were built along the course of the Missouri, transforming 35 percent of the river into a chain of reservoirs. River development was stimulated by a variety of factors, first by growing demand for electricity in the rural northwestern parts of the basin, and by floods and droughts that plagued rapidly growing agricultural and urban areas along the lower Missouri River. Small, privately owned hydroelectric projects have existed since the 1890s, but the large flood-control and storage dams that characterize the middle reaches of the river today were not constructed until the 1950s.