List of dams in the Columbia River watershed

Many of the dams in the Columbia River watershed were not created for the specific purposes of water storage or flood protection.

Furthermore, by creating a constant flow and consistent depth along the river channel, the series of locks and dams have allowed for Lewiston, Idaho, to become the furthest inland seaport on the west coast of the United States.

Download coordinates as: Dams are listed in order from headwater (Columbia Lake, BC) to mouth (Pacific Ocean, OR/WA).

Dams are listed in order from headwater (Two Oceans Plateau, WY) to mouth Columbia River, WA.

Dams are listed in order from headwater (Upper Elk Lake) to mouth (Kootenay River, BC).

Dams are listed in order from headwater (near Mount Dawson) to mouth (Kootenay River, BC).

Dams are listed in order from headwater (Lake Coeur d'Alene, ID) to mouth (Columbia River, WA).

Dams are listed in order from headwater (Canadian Rockies) to mouth (Columbia River, BC).