Yes, the Colorado River's natural outlet to the sea is into the Gulf of California, a.k.a. the Sea of Cortez.,, but, alas, it dries up before from over water allocation. Perhaps the list member is thinking of the Arkansas River , the headwaters of which are around Leadville, Lake County, Colorado? My great grandfather, Theodore Schultze, born in Heidelberg, took his family to Leadville in the mid-1880s. Originally a bookkeeper, Theo became a co-owner of salon in Leadville my great aunt, grandfather and twin great uncles were born there, the twins are buried in the cemetar there. Sent from my NOOK