The Stingray Water Dam is available with either 20", 30" or 48" protection heights and lengths of either 15ft or 30ft. The units can be connected with industrial strength velcro to achieve your optimal length. Whether you are looking to surround the entire perimeter of your critical infrastructure, hold back the overflow of a swelling river, or create an effective cofferdam to redirect water, the Stingray Water Dam is the major solution for major flooding events.