Wow -- the volume stats cited at that link are astounding. I knew it was a huge canal but according to that link, the lakes have been taking in 7 hectometers of water a day (about half the volume of average years), but average consumption or outflow (canal and otherwise) is ten hectometers per day. I had to google that one. A hectometer is a little over 264 MILLION gallons. Yeow. Makes the Erie Canal look like a little scratch in the earth's surface.