This was the first river and harbor work by the Corps of Engineers in Oregon. Keeping it open required annual dredging. By 1869, the Corps had cleared a 17-foot-deep channel.
Snags, which are logs and trees that fall into the river and became embedded in sand or mud, and constantly shifting sandbars, were hazards to navigation. The Army opened its first engineering office in the West at San Francisco in 1866, and that same year began working to clear the channel of the Willamette River to Portland in response to a petition to Congress by Portland city officials and an appropriation that Congress authorized in response. Army Corps of Engineers has a major role in the day-to-day business of the Columbia River, from maintaining the navigation channel to operating most of the major hydroelectric dams and helping to protect and recover salmon and steelhead.
0 kommentar(er)
