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US Army Corps of Engineers

Little Rock District Website

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Navigation

Navigation & Maintenance
(501) 324-5739

Reservoir Control
(501) 324-6237

Pine Bluff Project Office
(870) 534-0451

Russellville Project Office
(479) 968-5008

Montgomery Pt L&D
(870) 548-3400

Norrell Lock
(870) 548-2796

Lock No. 2
(870) 548-2791

Joe Hardin Lock
(870) 479-3164

Emmett Sanders Lock
(870) 534-2127

Col Charles D. Maynard Lock
(501) 842-2761

David D. Terry Lock
(501) 961-9281

Murray Lock
(501) 663-1997

Toad Suck Ferry Lock
(501) 327-0853

Arthur V. Ormond Lock
(501) 354-8402

Dardanelle Lock
(479) 890-4987

Ozark-Jeta Taylor Lock
(479) 667-2120

James W. Trimble Lock
(479) 452-0488

Archive: April, 2023

14 Apr 2023
NAVIGATION NOTICE Number SWL 23-16 McClellan-Kerr Arkansas River Navigation System
Notices to Navigational Interests (NTNI) https://ntninotices.usace.army.mil/lpwb/f?p=150:1: This is to advise mariners transiting the White River Entrance Channel (WREC) of increased head differentials between Norrell Lock and Dam and Montgomery Point Lock and Dam. At 7:00 p.m. today, the tailwater elevation at Norrell Lock and Dam was 146.42 ft-msl and the headwater elevation at Montgomery Point Lock and Dam was 143.10 ft-msl with a differential of 3.32 feet. The WREC differential is forecasted to increase to 4.0 feet by 30 March 2023. The differential is expected to begin decreasing after 01 April 2023. A subsequent navigation notice will be issued once the differential is forecasted to decrease below and remain below 3.0 feet. Mariners are reminded of advised tow restrictions during increased differentials.