If you were to look for this site today, look at where Millis Trucking sits on Route 31 east of Weedsport. You can see the old West Shore Railway bridge crossing over Rt 31. At one time, this bridge carried the railroad over the Enlarged Erie. The concrete abutments are there today. The curved ditch in the foreground is the first Erie Canal.
To help you see it, here are the two canals.
Here is another view showing Clinton Road in the foreground. You can see how the road follows the curve of the canal. Much of this remains today, but is greatly grown over.
Here is the view from the other side of the railroad. Again you can see the canal just north of the railroad. And here we see all three canal routes, Clinton's Ditch, the Enlarged, and the Barge (using the Seneca River).
Central New York, especially Wayne, Cayuga, and Onondaga Counties have many places where you can see remains of the first and second canals lying alongside one another. Good stuff and great photos.