UMATILLA, OR. - Soldiers from the 2nd Battalion, 75th Ranger Regiment stationed at Joint Base Lewis-McChord will conduct military night operations training at McNary Lock and Dam from Monday, March 25 through Wednesday, March 27. The training employs the use of helicopters and simulated munitions to make the exercise as realistic as possible. The training will primarily occur after sunset.
For the safety of all involved the public is asked to maintain a respectful distance from all training activities and to not interfere.
McNary Lock and Dam is 7,365 feet long, rising approximately 183 feet above the streambed. It consists of a concrete structure with an earth fill embankment at the Oregon (south) abutment. The spillway is a concrete, gravity-type spillway dam. It is 1,310 feet long, and contains 22 vertical lift gates, each 50 feet by 51 feet. The crest is at elevation 291 feet mean sea level and is designed to pass a flood of 2.2 million cubic feet per second. It is operated and maintained by U.S. Army Corps of Engineers, Walla Walla District through congressional authorization.
Release no. 24-015