D D G G A A G G [Verse 1] D A Green Douglas firs where the water cut through A D Down her wild mountains and canyons she flew D G Canadian Northwest to the ocean so blue G A D It's roll on, Columbia, roll on [Chorus] D A Roll on, Columbia, roll on A D Roll on, Columbia, roll on D D7 G Your power is turning our darkness to dawn G A D So roll on, Columbia, roll on [Verse 2] D A Tom Jefferson's vision would not let him rest A D An empire he saw in the Pacific Northwest D G Sent Lewis and Clark and they did the rest G A D So roll on, Columbia, roll on [Chorus] D A Roll on, Columbia, roll on A D Roll on, Columbia, roll on D D7 G Your power is turning our darkness to dawn G A D So roll on, Columbia, roll on [Verse 3] D A At Bonneville now there are ships in the locks A D Waters have risen and cleared all the rocks D G Shiploads of plenty will steam past the docks G A D It's roll on, Columbia, roll on [Chorus] D A Roll on, Columbia, roll on A D Roll on, Columbia, roll on D D7 G Your power is turning our darkness to dawn G A D So roll on, Columbia, roll on [Verse 4] D A And up on the river is the Grand Coulee Dam A D The mightiest thing ever built by a man D G To run the great factories and water the land G A D It's roll on, Columbia, roll on [Chorus] D A Roll on, Columbia, roll on A D Roll on, Columbia, roll on D D7 G Your power is turning our darkness to dawn G A D So roll on, Columbia, roll on [Chorus] D A Roll on, Columbia, roll on A D Roll on, Columbia, roll on D D7 G Your power is turning our darkness to dawn G A D So roll on, Columbia, roll on [Outro] D D7 G G G A A D