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Gavins Point Dam is a 1.9-mile-long (3 km) embankment rolled-earth and chalk-fill dam which spans the Missouri River and impounds Lewis and Clark Lake. The dam joins Cedar County, Nebraska with Yankton County, South Dakota a distance of 811.1 river miles (1,305 km) upstream of St. Louis, Missouri , where the river joins the Mississippi River .
Today, Calumet Bluff is a Federally-protected area by the U.S. Army Corps of Engineers (USACE) as a part of the Lewis and Clark Lake - Gavins Point Dam Project and is located along the Lewis and Clark National Historic Trail.
Lewis and Clark Lake and Gavins Point Dam. Lewis and Clark Lake was created as a result of the construction of Gavins Point Dam on the Missouri River, completed in 1957. The lake is approximately 25 miles (40 km) long, with a surface area of 31,400 acres (127 km 2), and over 90 miles (140 km) of shoreline; it has a maximum depth of 45 feet (14 ...
The visitor center is known as a viewing point for the American Bald Eagle, which frequents the Missouri River below the dam, especially in winter months. The visitors center is operated and staffed by U.S. Army Corps of Engineers Park Rangers, who also give guided tours of Gavins Point Dam and the power plant. [5]
In 2014 zebra mussels, an aquatic invasive mussel were discovered in the lake and have infested the reservoir and the Missouri River downstream of Gavins Point Dam. [3] The Lewis and Clark Marina and Resort, located within the recreation area, is privately operated under an agreement with Division of Parks and Recreation.
High flows out of Gavins Point was a contributor to the flooding that breached two levees near the three-way meeting point of Iowa, Missouri and Nebraska on Monday. One was a reported 300-foot ...
The recreation area is located immediately downstream of Gavins Point Dam and Lewis and Clark Lake. It is named for Cottonwood Island, an original island located in the Missouri River, for the large groves of Cottonwood Trees that dominate the area. The recreation area is owned and managed by the U.S. Army Corps of Engineers. [1]
Gavins Point Dam: NE SD: Lewis and Clark Lake: 74 23 492,000 0.607 132 Tributary dams. All tributary dams with a storage capacity greater than 250,000 acre-feet (0.31 ...