The ban, which goes into effect on Aug. 18, prohibits visitors from "entering the waters of the San Luis Pass for any activity, including bathing, fishing and/or swimming."
Over the past several weeks, four people have drowned in San Luis Pass in three separate incidents. On Aug. 7, a man and his son-in-law drowned after getting caught in a rip current.
In early July, a Houston father drowned when the kayak he was in with his family capsized just north of the San Luis Pass.
Just a week earlier, a 19-year-old fisherman drowned as he fished with a friend; authorities believe the pair was pulled under by a rip current.
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