The
Cooper River is a mainly
tidal river in the
U.S. state of
South Carolina. The South Carolina cities of
Mt. Pleasant,
Charleston,
North Charleston,
Goose Creek,
Moncks Corner, and
Hanahan are located along the river. Short and wide, it is joined first by the
blackwater East Branch, then farther downstream, the tidal
Wando River. Almost immediately thereafter, the river widens into its
estuary, uniting with the
Ashley River to form the
Charleston Harbor.