Welcome to GMAC! Online Registration!!! White Water Rafting Pics   We provide winter swimming in Southern Maryland at the beautiful Great Mills Swimming Pool for kids preschool through high school.  Find out more by clicking on our Yahoo Otters link under the Useful Information Link.  The most current session is listed under the Schedule link however, new swimmers are always welcome. President: Donna Holden Vice President - Chris Staley Treasurer: Karen Lester E-Mail: gmacotters@yahoo.com Registration: Colleen Kahl Phone: 410-326-3981 E-Mail: Kahl93@verizon.net Great Mills Pool Location: 21110 Great Mills Rd. Great Mills, MD 20653 (map) 301-866-6560 Great Mills Pool Website