MKARNS Nav Notice No. SWL 24-17 WREC Differentials

Notice Number: 24-17

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 1:00 p.m. today, the tailwater elevation at Norrell Lock and Dam was 140.93 ft-msl and the headwater elevation at Montgomery Point Lock and Dam was 137.95 ft-msl with a differential of 2.98 feet. The differential is forecasted to increase above 3.0 feet later today and stay above 3.0 feet until approximately February 21, 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

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@us.army.mil.

//signed// (for)

Christopher B. Roark
Chief, Operations Division