LNM11-0FE30F
Received 23 Sept 2026, 00:00 UTC
Warning text
Positions open on the mapSAN JOAQUIN RIVER - STOCKTON CHANNEL
General / Hazards To Navigation / Obstructions
The U.S. Coast Guard has received a report of a submerged piece of concrete or rock located between Walter’s Island and Morrison Island in the vicinity of Black Slough Landing, in approximate position 37-59.78N 121-25.22W. Mariners are advised to transit with caution.
USCG Southwest District Local Notice to Mariners 45/2026