US Army Corps of Engineers - LGR NRM Share: Government US Army Corps of Engineers - LGR NRM Visit Website 100 Fair Street Clarkston, WA 99403 (509) 751-0251 (509) 751-0242 (fax) http://www.usace.army.mil/Pages/default.aspx About About Our office manages lands along 100 miles of the Snake and Clearwater Rivers from Lewiston, ID down to the mouth of the Palouse River.