Home / Media / Feature Stories
Results:
Archive: June, 2021
Clear

  • June

    The Essayons travelled north to the Corps’ Alaska District, to dredge the Cook Inlet Navigation Channel. A sudden surge of shoal material in the past two years reduced depths and affected navigation in the channel, which is the only Coast Guard marked route for all cargo and fuel ships supplying the Port of Anchorage.

    Big Bertha heads to Benson Beach, battles erosion

    Off the coast of Oregon, Big Bertha moves in the water, inching toward land. Bertha, as her government creators to refer to it, is the result of three years of inter-agency planning. Her architects; some of whom work for the Portland District, U.S. Army Corps of Engineers; conscripted half of Portland District’s dredge fleet to scrape the river bottom and collect what was to become Bertha: a migrating mound of sand.
  • Corps contractors monitor screw traps downstream of Cougar Dam, May 28, 2021. The water flow turns a large screw creating hydraulics, which keeps small fish from escaping the trap. These traps are collecting juvenile salmon after they pass through Lookout Point, Cougar and Big Cliff dams. We’ve changed operations at these dams to help with downstream fish passage – or that’s the goal. These traps will give us insight into how well we’re doing.

    That sounds fishy: twisting traps troll tributaries in the Willamette

    The bulky contraptions float listlessly downstream of three dams in Oregon’s Willamette Valley. The buoyant, metal devices hold large screws that the water flow turns. This twist of the screw – creating a creaking, rasping, scraping sound – generates enough hydraulics to keep small fish from escaping the slowly spinning, cone-shaped collectors – or, screw traps.