Determine the downstream depth required for a jump to occur in a 20 ft wide rectangular channel if upstream depth is 2 ft and Q is a) 200 cfs and b) 640 cfs, what the head loss at each case

You are making beer. the first step is filling the glass carboy with the liquid wort. the internal diameter of the carboy is 15 in., and you wish to fill it up to a depth of 2 ft. if your wort is drawn from the kettle using a siphon process that flows at 3 gpm, how long will it take to fill?