LNM08G-8DF565
Received 23 Sept 2026, 00:00 UTCArchived 07 Oct 2026, 16:17 UTC
Warning text
Positions open on the mapSECTOR MOBILE, TERRITORIAL SEA - SECTOR MOBILE, SUBMERGED LAND ACT (SLA)
General / Miscellaneous
Alabama River - In accordance with Section 7-11 of the ACT Master Water Control Manual dated April 2022, full navigation channel availability on the Alabama River is dependent upon channel maintenance, seasonal flow conditions, and basin status. Flows for navigation are most needed in the unregulated portion of the lower Alabama River below Claiborne Lock and Dam. Alabama Power Company (APC) operates its reservoirs on the Coosa and Tallapoosa Rivers to provide a minimum navigation flow target in the Alabama River at Montgomery, Alabama. Basin status criteria are correlated to APC Drought Operations (ADROP) updates which monitors drought triggers related to basin inflow, state line flow on the Coosa River between Georgia and Alabama, as well as composite storage availability within the APC projects. These updates are provided monthly on the first and third Tuesday. Below is the most recent ADROP update provided by Alabama Power Company on September 15, 2026: *ADROP UPDATE* - Low Basin Inflow: TRUE - - Low State Line Flow: TRUE - - Low Composite Storage: FALSE - - Montgomery Flow Target: 4,200 cfs daily average - - Current Operations: Drought Intensity Level 2 - Currently, based on profile survey conducted on 04JUN2024, a 10 ft tailwater elevation near Claiborne Lock is required to provide a 9 ft navigation channel on the lower Alabama River. A modified depth of 7.5 ft navigable draft can be provided with a tailwater elevation of 8.5 ft at the Claiborne Lock and Dam. Commercial mariners should check water levels daily and schedule lockage appointments by calling the Claiborne Lock Supervisor at (251) 282-4575. Tailwater elevations below Claiborne Lock and Dam can be viewed at: https://waterdata.usgs.gov/monitoring-location/USGS-02428401
Position 31-36.90N 087-33.10W
USCG Heartland (Gulf) District Local Notice to Mariners 39/2026