foreshore

The foreshore is that zone of a beach or seashore that lies between the average low-tide mark and the average high-tide mark. It is fully exposed at low tide, hence its synonym, beach face. While in the United States the foreshore is regarded as public space, in Britain this part of any beach is owned by the Crown or its grantee. Because of its association with tide markings, foreshore is not typically used to refer to freshwater lakes but rather to any large body of water—usually the sea—affected by the tide.

Patricia Hampl