The SLAM computer simulation model of the locks system on the lower Fox River was modified to represent the operation of a proposed boat lift at the Rapide Croche lock. This boat lift is needed due to construction of a barrier to prevent migration of sea lamprey into the Fox River and Wolf River basins. The barrier gas put in place prior to the 1988 navigation season by sealing the Rapide Croche lock. Since then only three end locks have been operated. Prior to the sea lamprey barrier, the entire system of sixteen locks had been operated every summer since 1856. Two alternatives have been proposed for the boat lift at Rapide Croche. The simulation model was used to investigate delay of boat traffic within the system for both alternatives.
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