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North Fork Umatilla River

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Umatilla River near Cayuse, Oregon

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Umatilla River at 11K cfs

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Lamprey return to Umatilla River

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Umatilla river

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Mountain biking Umatilla Rim/ Oregon

The North Fork Umatilla River is a tributary of the Umatilla River in Union and Umatilla counties in the U.S. state of Oregon. Its headwaters lie in the Umatilla National Forest in the Blue Mountains of northeastern Oregon. It flows generally northwest to meet the South Fork Umatilla River near Graves Butte. Together the two forks form the main stem Umatilla.
  • River location facts 

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