Ouachita River Lock & Dam No. 8, Ouachita River at River Mile 282.8, Calion, Union County, AR
Significance: The Ouachita River Lock and Dam No. 8 is one of the oldest remaining locks and dams in the State of Arkansas. It represents a vital segment in the earliest attempt by the U.S. Army Corps of Engineers to control a river system in Arkansas. The overall lock and dam system portrays part of an early 20th century network of rivers and canals linking together much of the eastern U.S. From an engineering perspective, the property is unique by virtue of its movable wickets.
Survey number: HAER AR-1
Building/structure dates: 1907- 1912 Initial Construction
Building/structure dates: 1916 Subsequent Work