sentences:  The Coldwater River flows through Barry and Kent counties, and the drainage basin also includes a large portion of southwest Ionia County and a tiny portion of Sunfield Township in the northwest corner of Eaton County.The Coldwater is formed from the Little Thornapple River in Carlton Township in Barry County.It flows northerly for a few miles and then flows mostly west until emptying into the Thornapple River in southern Caledonia Township at .