The Snake River is the largest tributary of the Columbia and one of the defining waterways of the inland Pacific Northwest. It begins near the Greater Yellowstone region, crosses southern […]

The Columbia River is the great river of the Pacific Northwest. It rises in the mountains of British Columbia, enters the United States and eventually reaches the Pacific between Oregon […]

The Colorado River is one of the most engineered, allocated and debated rivers in North America. It begins in the Rocky Mountains, crosses the Colorado Plateau and flows toward Mexico. […]

The Arkansas River travels through several versions of the American landscape. It begins among high mountains in Colorado, descends through a dramatic canyon, crosses the dry and windy Great Plains, […]

The Ohio River does not lead national lists by length, but it is one of the most important commercial waterways in the United States. It begins at Pittsburgh, where the […]

The Missouri River is commonly recognised as the longest named river in the United States. It begins in Montana, crosses the northern and central Great Plains, and joins the Mississippi […]

The Mississippi River is often called the backbone of the United States. That description is not simply poetic. The river gathers water from a vast central basin, forms or crosses […]

River rankings look simple until two lists disagree. One source calls the Missouri the longest river in the United States. Another emphasises the Mississippi-Missouri system. A third includes the entire […]

The United States is a country shaped by rivers. They form state boundaries, supply cities and farms, generate electricity, carry freight and create some of the nation’s most memorable landscapes. […]

Regulatory review date: 15 September 2026 A blackout and a dead ship condition are related, but they are not the same. Confusing them can lead to incorrect decisions during an […]