wing dam

They also built piers and a wing dam just above the present location of the bridge.

It's the easiest way to reach the wing dam that Sanderson built at the canyon inlet to turn the current against the right bank.

While I was down at the wing dam a man passed me, coming from the direction of the great house.

“Right here is where, before long, we are going to build a wing dam to strengthen the main one,” explained the engineer.

Some danger from freezing was also encountered the next season, when the last part of the wing dam was being constructed.