The name Tumtum is a Chinook Jargon word for "heart", and the river was so-named because it was considered to be the heart of the valley through which it flowed.[2] When the Burnt Woods post office was to be named, one of the names proposed to the Post Office Department was Tumtum.[2]
References
^ abcd"Tumtum River". Geographic Names Information System. United States Geological Survey. November 28, 1980. Retrieved April 26, 2011.