Now, let’s dive into some of the best Missouri River facts that will blow your mind! 8. The Missouri River is the Longest ...

January runoff in the Missouri River Basin above Sioux City was 0.7 million acre-feet, 92% of average. The 2025 calendar year ...

Take a look at these facts and make yourself a river expert ... It’s the second-longest river in North America, beaten only by the Missouri River. You’ll find the Mississippi at its narrowest ...