there's this notice about the entrance, hope it helps.
QUEENSLAND
NOTICE TO MARINERS073(Temporary) of 2008
BRISBANE PILOTAGE AREALOCALITY: MOOLOOLAH RIVER ENTRANCE
ACTIVITY: SILTATION TO THE RIVER ENTRANCE - REDUCED DEPTHMariners are advised that a shoaling patch has formed across the entrance to the Mooloolah
River. The patch extends due west from the head of the eastern breakwater light in position
latitude 26° 40.7506' S, longitude 153° 07.9588' E across the channel with depths of 2.0m close
to the breakwater to 2.4m on it's western extremity.
The Harbour Master has declared the depth on the entrance as 2.1m.
Mariners are advised to navigate the area with caution. Deeper draft vessels are to make best use
of tides and the deeper water on the western side of the channel.Cancel Notice: 005(T) of 2008
AUS Charts Affected: 235
Maritime Safety Queensland Charts Affected: Moreton Bay – Manly to Mooloolaba (MB1)
Maritime Safety Queensland Beacon to Beacon Directory (7th Edition) map 48
NOTE: Latitude and longitude positions on WGS84 horizontal datum (compatible with GDA94 datum).For further information about this Notice, please contact:The Brisbane Regional Harbour Master’s office on 07 3860 3500.Authorised by: DIRECTOR (MARITIME SERVICES)
Issued: Brisbane 1 February 2008