He built the canals and locks around Willamette Falls in Oregon City in 1871-72.

They built locks at Baits Bite and Bottisham, and removed the sluice at Chesterton.

In 1792, with General Philip Schuyler, he formed a company to build locks and canals, starting with the Little Falls canal.

In the 1960s and 1970s the U.S. Army Corps of Engineers built four dams and locks on the lower Snake River to facilitate shipping.

In 1785, the James River Company was formed, with George Washington as honorary president, to build locks around the falls at Richmond.

At the rapids north of the village, they built new locks that could accommodate bigger barges.

The concept of building new locks and weirs, with most of the work being undertaken by volunteers, was new.

When the Corps began to build locks and dams on the Kanawha River in West Virginia in 1875, Craighill assumed charge there as well.

Environmental groups have begun a campaign against the government's plan to build higher bridges, wider canals and new locks around Berlin.

While barge owners and agricultural corporations have advocated building new locks to ease congestion along the bustling waterways, the proposals have encountered opposition, including from environmental groups.