US Army Corps of Engineers
Little Rock District Website

MKARNS Nav Notice SWL 17-48 Trimble Lock & Dam Low Navigation Pool Advisory

Published Sept. 28, 2017
Navigation Notice

Navigation Notice

Due to extended non-federal power generation early this morning, the Trimble Lock & Dam (No. 13) navigation pool was lowered beyond its normal range.  Therefore, mariners are advised that the navigation condition in this pool may be unfavorable at this time.  Preliminary assessments indicate that this low pool condition could remain until 11am Sept. 29.  Another navigation notice will be issued when the navigation pool is returned to the normal operating range. 

For questions related to the navigation conditions in this pool upstream of NM 308.6, please contact Rodney Beard (Tulsa District) at (918) 775-4475 extension 5890.  For the conditions downstream of NM 308.6, please see the contact information below. 

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


Kevin J. McDaniels

Chief, Operations Division
Little Rock District Operations Technical Support Branch

Release no. 17-176