John Paul Hammerschmidt Lake

John Paul Hammerschmidt Lake is a reservoir on the Arkansas River and an integral part of the McClellan–Kerr Arkansas River Navigation System (MKARNS). It was formed by constructing the James W. Trimble Lock & Dam 13 across the river, near the city of Barling, Arkansas and extends upriver 26 miles (42 km) to W. D. Mayo Lock and Dam, which is located inside the state of Oklahoma. Although the Trimble facility was completed in 1969, it was not allowed to pass commercial barges until 1971, when upstream facilities were completed.

John Paul Hammerschmidt Lake
Coordinates35.352586°N 94.295629°W / 35.352586; -94.295629
Etymologynavigational reservoir [1]
Part ofMcClellan-Kerr Arkansas River Navigation System (MKARNS)
River sourcesArkansas River, Poteau River
Basin countriesUnited States
Managing agencyU.S. Army Corps of Engineers
Max. length26 miles (42 km)
Surface area7,700 acres (31 km2)[1]
Shore length1120 miles (190 km)[1]
Surface elevation392 feet (119 m)[2]
SettlementsFort Smith, Arkansas, Van Buren, Arkansas, Barling, Arkansas, Moffett, Oklahoma, Fort Coffee, Oklahoma
References[1]
1 Shore length is not a well-defined measure.

The lake also serves as the boundary between Crawford and Sebastian Counties, Arkansas, as well as dividing Van Buren, the county seat of Crawford County, and Fort Smith, the county seat of Sebastian County. The Arkansas-Oklahoma State Line is the western boundary of both Arkansas counties.[2] Approximately one half of the lake's length lies within Oklahoma, where the lake separates Sequoyah County, Oklahoma from LeFlore County, Oklahoma.[1]

Poteau River, an Arkansas River tributary which flows north in Oklahoma, crosses the Arkansas-Oklahoma state line immediately southwest of Fort Smith and discharges into Hammersmith Lake.

The normal elevation of the lake is 392 feet (119 m) above sea level.[2]

References
  1. Townsend, Jay, "11 Great Things about the Arkansas River in Arkansas." Pacesetter Live. November 17, 2015. Accessed December 21, 2017.
  2. "John Paul Hammerschmidt Lake." Lake Browser. 2017. Accessed December 22, 2017.


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