American Falls Dam - Geography

Geography

The dam at American Falls is on the Snake River Plain at an elevation of 4357/1328 (ft/m). The topography in the immediate vicinity of the river is gently rolling, with differences in elevation of less than 200 ft (60 m). The original falls occur where the river channel narrows to about 600 ft (180 m) and cascades about 50 ft (15 m) in several 6–10 ft. drops over highly jointed basalt. The final drop is about a 15 ft (4.6 m) plunge.

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