LITTLE ROCK, Ark. -- PUBLIC WEBSITE: Notices to Navigational Interests (NTNI) https://ndc.ops.usace.army.mil/ords/f?p=107:1
NAVIGATION NOTICE Number SWL 24-67
McClellan-Kerr Arkansas River Navigation System
August 22, 2024
In Reply Refer to: CESWL-OP
P. O. Box 867
Little Rock, AR 72203-0867
PH. 501-324-5096
INCREASED DIFFERENTIALS ON
THE WHITE RIVER ENTRANCE CHANNEL
MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM
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 9:00 a.m. today, the tailwater elevation at Norrell Lock and Dam was 119.35 ft-msl and the headwater elevation at Montgomery Point Lock and Dam was 116.31 ft-msl with a differential of 3.04 feet. The WREC differential is forecasted to increase to 4.0 feet around 31 August 2024. The differential is then forecasted to remain above 3.0 feet until approximately 03 September 2024.
Mariners are reminded of advised tow restrictions during increased differentials shown below:
WREC Differential # Barges
2.9 feet or less No restriction
3.0 to 4.4 feet 12 barge down bound restriction
No restriction up bound
4.5 to 5.0 feet 9 barge down bound restriction
No up bound restriction
5.1 to 5.9 feet 4 barge down bound restriction during daylight
2 barge down bound restriction during night
No up bound restriction
Mariners transiting the WREC should use extreme caution in this area, especially when passing Montgomery Point Lock and Dam. Contact Montgomery Point Lock and Dam or Norrell Lock and Dam for current differential and elevations or visit our website at https://www.swl-wc.usace.army.mil/pages/arkansas_river_projects.htm
Questions or requests for additional information concerning this notice should be directed to the Little Rock District Office at (501) 324-5096 or you may email CESWL-OP-OM@usace.army.mil.
//signed// (for)
Chief, Operations Division
Release no. 24-122