From Wikipedia, the free encyclopedia

Inland waterway system with McClellan-Kerr Navigation System shown in red.

Newt Graham Lock and Dam on the Verdigris River in Wagoner County, Oklahoma

The McClellan-Kerr Arkansas River Navigation System is part of the inland waterway system originating at the Tulsa Port of Catoosa and running southeast through Oklahoma and Arkansas to the Mississippi River.

Though it primarily follows the Arkansas River, it also follows portions of the Verdigris River in Oklahoma and the White River in Arkansas. It also includes the Arkansas Post Canal, a short canal named for nearby Arkansas Post National Memorial, connecting the Arkansas and White Rivers.

Through Oklahoma and Arkansas, dams artificially deepen and widen this modest sized river to build it into a commercially navigable body of water. Along the section of the Arkansas River that carries the McClellan-Kerr channel, the river sustains commercial barge traffic and offers passenger and recreational use, and is little more than a series of reservoirs.

The Arkansas River is very shallow through Arkansas and Oklahoma, and was naturally incapable of supporting river traffic though most of the year. To allow for navigation, construction was started in 1971 on a system of channels and locks to connect the many resevoirs along the length of the Arkansas River. The first section, running to Little Rock, Arkansas, opened in 1968. The first barge to reach the Port of Catoosa arrived in early 1971.

Each lock measures 110 feet wide and 600 feet long, the standard size for much of the Mississippi River waterway. Standard jumbo barges, measuring 35 by 195 feet, are grouped 3 wide by 3 long, with a tug at center rear, to form a barge packet which can be fit into a lock. Larger barge packets must be broken down and passed through the lock in sections, and rejoined on the opposite side.

The specifications for the channel itself are as follows:

• Depth of channel: 9 feet (2.7 m) or more
• Width of channel: mostly 250 ft. - 300 ft. (75 m to 90 m)
• Bridge clearance: 300 ft. horizontal (90 m) 52 ft. vertical (15.6 m)

The following tables list the features of the navigation system, from the Mississippi River to the origin at the Port of Catoosa. Except as noted, all locks are on the Arkansas River.

Note that there is no lock 11; it is believed that revisions to Dardanelle Lock & Dam (which created Lake Dardanelle) eliminated the need for lock 11^{[citation needed]}. The Mississippi River lock is not numbered as it was added to the system after it was completed.

• Animated Map of navigation system
• An Outline History of the Arkansas River
• US Army Corps of Engineers, Little Rock, Arkansas district navigation information