Jim,
Most who fish the Canal are more interested in the slack water periods when the tide turns then when high or low tide is at particular location in the Canal.
You can get this info in 3 places which I can think of:
1). The Visitors Center at the Herring Run has Tide Tables
2). Red Top has Tide Charts
3). The Eldridge Tide and Pilot Charts have this info
If you are going to be a 'Canal Rat' these charts are your Bible.