US Army Corps of Engineers
Northwestern Division

  • May

    Complex system of dams turns 50, saves Oregon $1 billion annually

    This year, Blue River Dam turns 50-years-old, and marks the 50th commemoration of the completion of the entire system of U.S. Army Corps of Engineers’ 13 dams in Oregon’s Willamette Valley, which has been systematically protecting people, infrastructure and a way-of-life since 1969.
  • Operating the Columbia River System today

    Federal agencies operate many Columbia River dams to meet a wide spectrum of needs in the Pacific Northwest. Among the most important are flood risk management, power production, fish and wildlife protection, navigation, irrigation, recreation and municipal and industrial water supply.
  • What is the No Action Alternative?

    The National Environmental Policy Act requires agencies to always describe and analyze a “no action” alternative in an EIS. In simple terms, a No Action alternative for an existing or ongoing federal project considers what would happen if the federal agency continued to operate and maintain the authorized project with no changes.
  • Learn and Link

    Learn more about the Columbia River System Operations and the Environmental Impact Statement process.
  • CRSO EIS Featured Project

    The Columbia River System is large and complex. This educational feature introduces you to individual projects that play a role in supporting the region’s tribes, communities, industries and fish and wildlife species.
  • Webcast outlines reasonable range of alternatives

    An online webcast outlining the five alternatives undergoing a detailed evaluation.
  • Corps of Engineers leveraging drone technology to capture imagery after flooding in Midwest

    In mid-to-late March, flood water covered much of eastern Nebraska, western Iowa, and northern Missouri. Due to the extreme amount of water in the area, members of the U.S. Army Corps of Engineers, Omaha District had trouble getting to the more than 500 miles of compromised levees to surveille for damage so they turned to a new option to the Omaha District....drones. Drones, or unmanned aerial systems, offer the District the opportunity to fly over affected levees and other flooded areas without putting District employees in danger.
  • Omaha District System Restoration Team in full swing bringing levee system back up

    The U.S. Army Corps of Engineers, Omaha District responded to the devastating unregulated runoff event of 2019 by activating the Omaha Systems Restoration Team, whose mission is to provide regional, time-sensitive repair of levees, dams and other flood control structures that were damaged throughout the Missouri River Basin.
  • April

    CRSO EIS Featured Project

    Featured ProjectThe Columbia River System is large and complex. This educational feature introduces
  • Role of Cooperating Agencies in the EIS

    The participation of cooperating agencies is an essential part of the development of the CRSO EIS.