This venue, the Welland International Flatwater Center, is like the worlds largest outside swimming pool, It's a dead-end appendage of the Welland canal/lock system that connects Lakes Ontario & Erie. (If I'd had more time I would have liked to go watch the giant ships moving through the locks!)
The competition site was built for the Pan Am Games and is used mostly for rowing events. It's completely sheltered from the wind & currents, not very wide, has spectator seating at the start/finish, and a spectator-friendly path along the length of it. It also has giant yellow signs on the banks announcing 250, 500, 750, and 1000 meters. I really liked seeing these as I was swimming.