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Castle Creek (Washington) facts for kids

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Castle Creek
Castle Creek and Castle Lake, Washington.jpg
Aerial view of Castle Creek and Castle Lake. Part of Mount St. Helens is visible in the upper left corner of the image.
Castle Creek (Washington) is located in Washington (state)
Castle Creek (Washington)
Country United States
U.S. State Washington
County Cowlitz
County Skamania
Physical characteristics
Main source West flank of Mount St. Helens
4,275 feet
River mouth North Fork Toutle River
2,200 feet
Basin features
  • Left:
    South Fork Castle Creek
Waterbodies Castle Lake (South Fork)

Castle Creek is a tributary of the North Fork Toutle River on the flank of Mount St. Helens in Washington state. It rises about two miles (three kilometers) northwest of the crater rim (46°13′01″N 122°14′22″W / 46.21690°N 122.23934°W / 46.21690; -122.23934 (Castle Creek source)) and flows generally to the northwest. The outflow of Castle Lake joins the creek at the lake's north end (46°15′29″N 122°16′19″W / 46.258°N 122.272°W / 46.258; -122.272 (South Fork Castle Creek confluence)) after traveling a few hundred meters on the South Fork Castle Creek. It joins the North Fork Toutle River at 46°16′59″N 122°17′37″W / 46.28302°N 122.29359°W / 46.28302; -122.29359 (Castle Creek mouth), elevation 2,200 feet.

Castle Lake was created by an avalanche subsequent to the May 18, 1980 eruption of Mount St. Helens which blocked South Fork Castle Creek. Pre-1980 maps show this area as "Castle Creek Marsh".

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