Flow is well within penstock capacity, thus reach is undoubtedly barely a trickle of water.
After a 'corridor' of lesser gradient (populated with smaller ledges, holes, and waves), the river takes a very slight bend to the right and a horizon line will be encountered. Au Train Falls starts out with a ledge of perhaps 5-6' vertical, fairly uniformly across the wide river. (This means the water will be shallow and grungy at the lip of the drop as well as the landing -- expect no 'cushion'.) The bedrock slopes away into a long series of slides, passing under a driveway (to the powerplant) and twisting off to the right. A few more ledges and holes will be encountered before the river tames down as it heads off through the woods.