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  • 23-039 Corps seeks public input for McNary Master Plan revision

    UMATILLA, Ore.– The U.S. Army Corps of Engineers Walla Walla District has prepared a draft McNary Master Plan with an accompanying draft Finding of No Significant Impact (FONSI) and Environmental Assessment (EA) to revise the outdated 1982 McNary Master Plan. The Walla Walla District will be accepting public comments from July 10 through Aug. 10.

  • 23-037 Corps to treat Lake Wallula to control invasive flowering rush

    WALLA WALLA, WA– The U.S. Army Corps of Engineers Walla Walla District will be performing up to five five-acre treatments in Lake Wallula, the McNary reservoir near the Tri-Cities, Washington, with herbicide, Diquat Dibromide, at an application rate of two gallons per surface acre. This effort is to control the invasive aquatic plant species flowering rush.

  • 23-004 Corps ropes off hillside after erosion event at McNary

    Umatilla, OR – Officials at McNary Lock and Dam have roped off the hillside on the south shore near the dam due to hazardous conditions created by an erosion event.

  • 22-030 Corps to begin construction this summer to connect McNary wastewater sewer system to the City of Umatilla sewer system

    Umatilla, Oregon – The U.S. Army Corps of Engineers’ Walla Walla District will begin construction this summer to connect the McNary Dam wastewater sewer system to the City of Umatilla sewer system. During the construction effort there will be temporary closures and detours affecting 3rd Street, West Park, Spillway Park, and the Visitor Center/Juvenile Fish Facility. Look for additional news releases as construction progresses with closure details and dates.

  • 22-029 Corps to hold public meetings to gather input for McNary Master Plan Revision

    BURBANK, Wash.– The U.S. Army Corps of Engineers’ Walla Walla District (Corps) has scheduled two open house public meetings to provide information and accept comments on the proposed revision of the 1982 McNary Master Plan and accompanying Environmental Assessment.

  • 22-028 Corps seeks public input for McNary Master Plan Revision

    BURBANK, Wash.– The U.S. Army Corps of Engineers’ Walla Walla District (Corps) invites the public to provide scoping comments for the upcoming revision of the McNary Master Plan. The Corps will be accepting comments from May 2 through June 2, 2022.

  • 22-005 Columbia and Snake river navigation locks will close in February for annual maintenance

    COLUMBIA & SNAKE RIVERS, Ore. & Wash. – The U.S. Army Corps of Engineers’ Walla Walla District will close the District’s navigation locks on the Columbia and Snake rivers in February for regularly-scheduled annual inspections, preventative maintenance and repairs.

  • 21-006 Columbia and Snake river navigation locks will close March 6 for annual maintenance

    COLUMBIA & SNAKE RIVERS, Ore. & Wash. – The U.S. Army Corps of Engineers’ Portland and Walla Walla districts will close all Corps navigation locks on the Columbia and Snake rivers March 6 at 6 a.m. for regularly-scheduled annual inspections, preventative maintenance and repairs.

  • 20-029 Summer recreational vessel lockage schedule has begun

    COLUMBIA & SNAKE RIVERS, Ore. & Wash. – For the Walla Walla District, Corps of Engineers, May 15 marked the start of the summer schedule for recreational boaters using navigation locks to travel past U.S. Army Corps of Engineers dams on the Columbia and Snake rivers, according to Corps navigation planners.

  • 15-072 McNary navigation lock to temporarily close Nov. 3

    UMATILLA, Ore. – McNary Dam’s navigation lock will be temporarily out of service Tuesday, Nov. 3, from 7 a.m. to 2 p.m. to allow inspection and measurement of the lock’s downstream and upstream gates brake shoes for future replacement, according to U.S. Army Corps of Engineers navigation officials at the Walla Walla District.