Right now the river is so low that there are places where you can literally cross the river without getting your feet wet by hopping from rock to rock.
The FN set up a rock weir every year at the high tide mark that stops the fish going upstream in the summer when the river is low. Right now there are many fish jumping around close to shore near the mouth. Last time I was there those jumpers were looking a little dark and were not biting. 20+ guys on the shore and I saw 1 fish caught and it was wild. Good fishing but not much catching. Lots of boats targeting the springs in deep water where the tidal current is strong.
When it rains and the river goes up to above 1.2m on the graph, the weir gets washed out and the fish can enter the river. Wait for the rain.