Danger From Rip Currents In the US, rip currents cause approximately 100 drownings per year. About 80% of all swimmers rescued at beaches were endangered by rip currents (United States Lifesaving Association). Swimmers who understand rip currents can reduce their chances of being caught in one and increase their chances of survival if they are caught in a rip current. What Is a Rip Current? A rip current is a narrow region where water is flowing outward perpendicular to the shoreline. They usually range from 20 to 100 feet wide, but can occasionally be wider. The outward flowing current pulls even strong swimmers outward, but does not pull swimmers downward. People associate rip currents with ocean beaches, but they can also occur on any beach that has waves large enough to break, including large lakes. Rip currents can occur where there is a natural break in an offshore sandbar or near a manmade structure such as a pier or jetty.