One tricky thing is the Mississippi has water, but the majority comes from the Ohio, nowhere near the Colorado. This is a diagram for capacity, not volume, but

One tricky thing is the Mississippi has water, but the majority comes from the Ohio, nowhere near the Colorado. This is a diagram for capacity, not volume, but you get the idea. https://ian.umces.edu/media-library/flow-capacity-for-the-mississippi-river/ https://ian.umces.edu/media-library/flow-capacity-for-the-mi...