the columbia river meets the pacific ocean at columbia river gorge.
the columbia river meets the pacific ocean at columbia river gorge.
where does the columbia river meet the pacific ocean?
columbia river gorge
the north coast, which stretches from the columbia river to cascade head, possesses longer stretches of unbroken beach (due to silt deposits washed southwards from the columbia river), a higher concentration of logging zones, and larger, but less frequent sandbar-enclosed bays. astoria serves as a staging ground for ships entering and leaving the columbia river, because of the dangerous columbia bar. ships wishing to make the passage require the aid of specially trained bar pilots. along the coast are the cities of seaside, cannon beach and tillamook. seaside and cannon beach lie directly on the pacific ocean, whereas tillamook lies inland along tillamook bay. because of the low lands that exist on this region of coast, flooding is an annual problem, especially in the winter, when storms push in from the north pacific. tillamook is particularly affected by these yearly floods, because of its location on a major floodplain. sandstone cliffs occur rather sporadically in this region. this is due to relatively slow uplift rates as well as fairly constant sediment wash from the columbia river. future uplift from the subduction of the juan de fuca plate will eventually create sandstone cliffs similar to those found further south and north. the north oregon coast is also a part of the graveyard of the pacific.
oregon coast
the organization of the following lists begins with the columbia river dams and is followed by dams on its tributaries (in order of length) and their respective watersheds. additionally, the table of contents below is indented to indicate tributary status of each river.









































section::::main stem columbia river dams.









































dams are listed in order from headwater (columbia lake, bc) to mouth (pacific ocean, or/wa).









































section::::main stem columbia river dams.:snake river dams.









































dams are listed in order from headwater (two oceans plateau, wy) to mouth columbia river, wa. 









































section::::main stem columbia river dams.:snake river dams.:salmon river dams.
list of dams in the columbia river watershed