Marked Tree Lock and Siphons

	Marked Tree Lock and Siphons
	U.S. National Register of Historic Places
	U.S. Historic district
	One of the siphon pipes
Nearest city	Marked Tree, Arkansas
Coordinates	35°35′10″N 90°25′47″W / 35.58611°N 90.42972°W
Area	5.3 acres (2.1 ha)
Built	1926
Built by	US Army Corps of Engineers
NRHP reference No.	88000431
Added to NRHP	May 2, 1988

The Marked Tree Lock and Siphons are a flood control facility on the St. Francis River in Poinsett County, Arkansas. These facilities are located about 9 miles (14 km) north of Marked Tree. Built in 1926, the lock is located on a now disused and partially filled artificial channel west of the main river. It has a concrete trough about 130 feet (40 m) long and 30 feet (9.1 m) high, with a small brick control house from which four gates are operated to regulate water flow through the lock. The lock gates have been removed and that area filled in and topped by a roadway. The siphons are located on a levee that impounds the main river channel several hundred feet upstream from the lock, and consist of a series large metal tubes, whose ends are mounted in submerged concrete structures above and below the levee. The siphons were built in 1939 to solve the problem of water flow regulation in the wake of repeated major flooding events on the river, and are described by the United States Army Corps of Engineers as unique in the nation for their scope and efficiency.^[2]

The lock and siphons were listed on the National Register of Historic Places in 1988.^[1]

References

^ ^a ^b "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
^ "NRHP nomination for Marked Tree Lock and Siphons" (PDF). Arkansas Preservation. Retrieved 2014-12-05.

This article about a property in Poinsett County, Arkansas on the National Register of Historic Places is a stub. You can help Wikipedia by expanding it.

[nris-1] "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.

[NRHP-2] "NRHP nomination for Marked Tree Lock and Siphons" (PDF). Arkansas Preservation. Retrieved 2014-12-05.

[1]

[2]

v t e U.S. National Register of Historic Places
Topics	Architectural style categories Contributing property Historic district History of the National Register of Historic Places Keeper of the Register National Park Service Property types
Lists by state	List of U.S. National Historic Landmarks by state: Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming
Lists by insular areas	American Samoa Guam Minor Outlying Islands Northern Mariana Islands Puerto Rico Virgin Islands
Lists by associated state	Federated States of Micronesia Marshall Islands Palau
Other areas	District of Columbia American Legation, Morocco
Related	National Historic Preservation Act Historic Preservation Fund List of jails and prisons on the National Register of Historic Places University and college buildings listed on the National Register of Historic Places
National Register of Historic Places portal Category

See also

References