A high rate of sedimentation from the outflow of the three major rivers (Fraser River, Columbia River, and Klamath River) which cross the Cascade Range contributes to further obscuring the presence of a trench.
Pacific Ocean | Pacific | Canadian Pacific Railway | Pacific War | South Pacific | Union Pacific Railroad | Pacific Islands | Pacific Northwest | Northern Pacific Railway | Pacific Islander | Southern Pacific Transportation Company | 2011 Pacific Games | Indo-Pacific | South Pacific (musical) | United States Pacific Fleet | Flinders Ranges | University of the Pacific | Central Pacific Railroad | University of the Pacific (United States) | Pacific Northwest Ballet | Cathay Pacific | United States Pacific Command | Asia-Pacific Economic Cooperation | Asia-Pacific | Pacific Southwest Airlines | Pacific Rim | War of the Pacific | Pacific Station | Pacific Highway | California Pacific Medical Center |