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If you have questions or concerns, please provide us with information and we will get back to you as soon as possible. If you provide your email address, we will not re-sell it, but will use it to provide you timely information about the lock system.

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Fox River Navigation System Authority

For special lockages we require 24 hours notice, please contact
Jim Van Boxtel, Locks Manager,, (m) 920-202-1853 or Luke Green, Locks Manager,, (m) 920-259-9164

Jeremy Cords, CEO,, (m) 920-309-4501

Karen Flesch, Operations Manager,

Customer Service: 920-759-9833, Fax: 920-759-9834

1008 Augustine Street
Kaukauna, WI 54130-1608

Office hours: Open Mon-Fri, please call (920) 759-9833 for availability and to schedule an appointment. Office Closed these holidays: Memorial Day, 4th of July, Labor Day, Thanksgiving, Friday after Thanksgiving, Christmas Eve, Christmas Day and New Years Day.