dead low water

At a fair stage of the river that might have answered; but when the dead low water came it was destructive.

When I quitted it very early in August, London life was, as it were, at dead-low water-mark.

Dead low water in Boulogne Harbour, and a slack time for the motor ambulances parked on the quay above.

They can go over this creek at dead low water, upon rocks and reefs, at the place called Spyt den Duyvel.

The admiral had wisely chosen the time of dead low water to commence the ascent.