Tilton River

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Tilton River
Tilton River is located in Washington (state)
Tilton River
Location of the mouth of Tilton River in Washington
CountryUnited States
Physical characteristics
SourceGifford Pinchot National Forest
 ⁃ locationnorth of Morton
 ⁃ coordinates46°39′23″N 122°13′44″W / 46.65639°N 122.22889°W / 46.65639; -122.22889[1]
 ⁃ elevation3,035 ft (925 m)[2]
MouthCowlitz River
 ⁃ location
Lake Mayfield
 ⁃ coordinates
46°33′09″N 122°32′04″W / 46.55250°N 122.53444°W / 46.55250; -122.53444Coordinates: 46°33′09″N 122°32′04″W / 46.55250°N 122.53444°W / 46.55250; -122.53444[1]
 ⁃ elevation
427 ft (130 m)[1]
Length29 mi (47 km)[3]
Basin size154 sq mi (400 km2)[4]

The Tilton River is a tributary of the Cowlitz River, in the U.S. state of Washington. Named for territorial surveyor James Tilton,[5] it flows for about 29 miles (47 km), entirely within Lewis County.[3]


The Tilton River originates in the Cascade Range just north of Mount St. Helens and southwest of Mount Rainier. It flows south and west, joining the Cowlitz River in Lake Mayfield, near Mossyrock.[3]

See also[edit]


  1. ^ a b c "Tilton River". Geographic Names Information System (GNIS). United States Geological Survey. September 10, 1979. Retrieved January 27, 2013.
  2. ^ Source elevation derived from Google Earth search using GNIS source coordinates.
  3. ^ a b c United States Geological Survey. "United States Topographic Map". TopoQuest. Retrieved January 27, 2013. River miles are marked and numbered on the relevant map quadrangles.
  4. ^ Lower Columbia Fish Recovery Board (2006). "Grays–Elochman and Cowlitz Watershed Management Plan" (PDF). Cowlitz County. p. 55 (section 4). Retrieved January 28, 2013.[permanent dead link]
  5. ^ Meany, Edmond S. (1923). Origin of Washington geographic names. Seattle: University of Washington Press. p. 310.