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Lower Monumental Dam Closes Public Dam Crossing to Perform Spillway Maintenance

Photo by Noe Gonzalez/US Army Corps of Engineers Walla Walla District Website

KAHLOTUS, Wash. – Officials at Lower Monumental Lock and Dam are closing dam crossings to the public from September 12 to September 25 in order to perform spillway maintenance.

Normal crossing hours are once an hour, on the half-hour, from 7:30 a.m. to 4:30 p.m. Monday through Thursday. Public dam crossings are also available at Lower Granite Lock and Dam and Little Goose Lock and Dam.

For more information about dam crossing visit or call 1-888-AM-INFO (1-888-326-4636).