Over one hundred years ago anadromous fish had unrestricted movement up the Cape Fear River in the spring. These types of fish live in salt water and spawn in fresh water. However, construction of three locks and dams in the early 1900s blocked their movement. In June 2001, the Army Corps of Engineers began work on rock arch rapids at Lock & Dam No. 1. When completed this stepladder will allow the fish to swim past the dam and further upstream.