There is the flume north of the wheel which seems so not only carry water but also logs and then there is the wheel with the mill and beyond that farther south the loading flume that leads to the harbor. It that right?
Yes, there is a long flume that runs to the north side of the mill's sluice, in which the Giant's Wheel sits, with the canal pound on the east side of the wheel. The Osprey River water turns the wheel and continues west of the sluice and wheel, up around the north end of the town. On the south side of the mill race is the actual mill and a short conveyor that moves logs into the southern flume. The southern flume is about 500 feet long, and ends in a slide that drops product to collection point at the water a hundred feet below the bluff on the town's eastern side.
And yes, the Giant's Wheel is articulated by Osprey River water collected in the canal pound. The northern flume terminates at the edge of the pound and adds its water to it.
Does any of this help?