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 _____     __   __    _____    __   __   _    _   
|  __ \\   \ \\/ //  / ____||  \ \\/ // | \  / || 
| |  \ ||   \ ` //  / //---`'   \ ` //  |  \/  || 
| |__/ ||    | ||   \ \\___      | ||   | .  . || 
|_____//     |_||    \_____||    |_||   |_|\/|_|| 
 -----`      `-`'     `----`     `-`'   `-`  `-`

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Text this: Flow backup caused by structures within open channel