NAV NOTICE SWL 13-39 WHITE RIVER ENTRANCE CHANNEL INCREASED DIFFERENTIALS

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.  Currently, the tailwater elevation at Norrell Lock and Dam is 124.3 ft-msl and the headwater elevation at Montgomery Point Lock and Dam is 121.7 ft-msl with a differential of 2.6 feet.  Due to a falling Mississippi River level and higher than normal flows on the White River, the WREC differential is forecasted to reach 3 feet by Tuesday, September 10 and 4 feet by Wednesday, September 18.  These higher differentials are expected to persist until White River flows recede.  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

Mariners transiting the WREC should use extreme caution in this area, especially when passing Montgomery Point Lock and Dam.

Questions or requests for additional information concerning this notice should be directed to James McKinnie in the Little Rock District Office, at (501) 324-5739 or (501) 324-5096, or you may email CESWL-OP-OM@us.army.mil.

//signed//

John A. Balgavy, P.E.