page_title: List of longest streams of Idaho
section_title: Table
hierarchical_section_title: List of longest streams of Idaho / Table
caption_attribution_description: English: The Snake River cutting through the Snake River Plain here near Twin Falls, Idaho leaves behind many canyons and gorges.
context_page_description: A total of seventy streams that are at least 50 miles long flow through the U.S. state of Idaho. All of these streams originate in the United States except the Kootenai River and the Moyie River, both of which begin in the Canadian province of British Columbia. At 1,076 miles, the Snake River is the longest and the only stream of more than 500 miles in total length. It begins in Wyoming and flows through Idaho for 769 miles, and then through Oregon and Washington. Some of the other streams also cross borders between Idaho and Montana, Nevada, Oregon, Utah, Washington, or Wyoming, but the majority flow entirely within Idaho, the longest of which is the Salmon River at 425 miles.
  All but four of the streams lie within the large basin of the Columbia River, although the river itself does not flow through Idaho. Consequently, the predominant direction of the state's streamflow is northwest towards the Columbia River and its mouth at the Pacific Ocean. The only other major drainage basin in Idaho is the Great Salt Lake watershed in the state's southeastern corner, which is part of the Great Basin and has no outlet to the ocean.
caption: Snake River (longest) cutting through the Snake River Plain near Twin Falls
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