The Colorado now absolutely has lost all possibilities for commerce. Pioneer conditions are about the same as far southward as the Laguna dam. This structure, built to divert water for the Yuma and Imperial valleys, absolutely bars the river channel for navigation. Above it and below it now are only ferries and a few power boats. The great Imperial canal system, at a point below Yuma, for much of the year drains the river flow. Where good-sized steamers once plied from tidewater, at the head of the Gulf of California, now, for months at a time, is only a dry sand wash. To this extent the advance of civilization has obliterated a river that ranks, in geography at least, among the greatest streams of the United States. Establishing a River Port Callville, established on the Colorado by Anson Call in December, 1864, for a while was the southernmost outpost of Mormon settlement. Call himself was a pioneer of most vigorous sort. November 24,1851, he was one of the founders of Fillmore, Millard County, 150 miles south of Salt Lake, a settlement for a while the capital of the Territory of Utah, created during the administration of President Millard Fillmore in 1850. In the following year he built Call's Fort in Box Elder County, in the extreme northern part of Utah. In a compilation made by Andrew Jenson is found definite statement that the settlement made by Anson Call on the Colorado was "as agent for the Trustee in Trust (the President) of the Church in December, 1864, according to a plan which was conceived of at that time to bring the Church immigration from Europe to Utah via Panama, the Gulf of California and up the river to this landing." In conjunction with this, a number of leading merchants of Salt Lake City combined to build a warehouse on the Colorado, with a view to bringing goods in by the river route. This company also constituted Anson Call its agent. November 1, Call was directed to take a suitable company, locate a road to the Colorado, explore the river, find a suitable place for a warehouse, build it and form a settlement at or near the landing. All these things he accomplished. At St. George he employed Jacob Hamblin and son, Angus M. Cannon and Dr. Jas. M. Whitmore. The journal of travel tells of leaving the mouth of the Muddy, continuing down the Virgin twelve miles, thence up what was named Echo Wash, twelve miles, and thence twenty miles, generally southwestward, to the Colorado, a mile below the narrows, above the mouth of Black Canyon, where, on December 2, was found a black rocky point, considered a suitable spot for the erection of a warehouse, above high-water mark. This later was named Callville.