The routes of trappers and prospectors frequently followed aid native trails, which crossed and recrossed the country in every direction, except where the canyons of the Green and Colorado were approached, when few lines of traverse were open across, and none along the course of the water.
On the headwaters of Green River lived the Crows, who called it the Seedskedee Agie or Prairie Hen River.

The Snakes and Utes living farther down called it the Bitter-root.

Fremont called it the Rio Verde of the Spaniards, but apparently without good authority.

It was also spoken of as Spanish River, from the report that Spaniards occupied its lower valleys.

Colorado was also one of its names, and this is what it should have remained.