mud flat

Regardless of his thousand-dollar fur, he rolled, thrashed, and tumbled about in the bushes and in the mud flat by a brook.

The flat we were approaching was a mud-flat, and, from its appearance, the tide was certainly at the ebb.

We had acquired this waste of marsh and mud-flat and were keen to go and possess it.

The combination always reminds me of a rather stylish tug-boat with its towline attached to a scow on a mud-flat.

Clifford told Jack that they must "row the old tub back to Mud Flat," and both boys pluckily bent to the work.