MKARNS Nav Notice SWL 22-05 WREC Differentials

Little Rock District Operations Technical Services Branch
Published Feb. 4, 2022
Navigation Notice

Navigation Notice

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 AM today, the tailwater elevation at Norrell Lock and Dam was 129.6 ft-msl and the headwater elevation at Montgomery Point Lock and Dam was 126.3 ft-msl with a differential of 3.3 feet.  The WREC differential is forecasted to remain above 3.0 feet through this weekend.  Mariners are reminded of advised tow restrictions during increased differentials:

 

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 http://www.swl.usace.army.mil/Missions/WaterLevels.aspx

 

Questions or requests for additional information concerning this notice should be directed to the Little Rock District Office at (501) 324-5739 or you may email CESWL-OP-OM@us.army.mil.

 

//signed//

Christopher B. Roark

Chief, Operations Division


Contact
Little Rock District Operations Technical Services Branch
501-324-5096
CESWL-OP-OM@us.army.mil

Release no. 22-008