Tidewater region is a geographic area in the US.
Tidewater region . In the case of Virginia , the Tidewater region includes the land east of the Fall Line , the natural border with the Piedmont Region . Virginia ( [ vɚˈdʒɪnjə ] , [ vɚˈdʒɪni.ə ] , officially the Commonwealth of Virginia ) is a state located on the Atlantic Coast of the United States .