[bacon_waffle]

Because it's in the Arkansas River drainage?

[justinator]

Hmm, no. The water that's diverted from the Colorado via the Grand Ditch goes into the Cache la Poudre River,

https://en.wikipedia.org/wiki/Grand_Ditch

Though it gets a lot more involved,

https://issuu.com/cfwe/docs/cfwe_cgtb_web

[bacon_waffle]

It was a stupid riff on the title. But, the Arkansas River does start in Colorado, and so some amount of Colorado's snowpack does wind up in Arkansas' river.

[julienchastang]

The Colorado snow pack ends up in the Rio Grande, and Platte as well.