[1] The American Race, by D. G. Brinton, 1891.
[2] The Gilded Man, by A. F. Bandelier, 1893.
CHAPTER XIV
A FINE CLIMATE
The climate of Arizona as described in the local vernacular is "sure fine." The combination of elements which make the climate is unusual and cannot be duplicated elsewhere upon the American continent. The air is remarkably pure and dry. Siccity, indeed, is its distinguishing feature. That the climate is due to geographical and meteorological conditions cannot be doubted, but the effects are unexplainable by any ordinary rules.
The region involved not only embraces Arizona, but also includes portions of California and Mexico and is commonly known as the Colorado Desert. Yuma, at the junction of the Gila and Colorado rivers, is approximately its geographical center. The general aspect of the country is low and flat and in the Salton sink the dry land dips several hundred feet below the level of the ocean. Only by extreme siccity is such land possible when more water rises in evaporation than falls by precipitation. There are but few such places in the world, the deepest one being the Dead Sea, which is about thirteen hundred feet lower than the ocean.
The Colorado Basin is the dry bed of an ancient sea whose shore line is yet visible in many places upon the sides of the mountains which surround it. Its floor is composed of clay with deposits of sand and salt. Strong winds sometimes sweep over it that shift and pile up the sand in great dunes. The entire region is utterly bare and desolate, yet by the use of water diverted from the Colorado river it is being reclaimed to agriculture.
The rainfall is very scant the average annual precipitation at Yuma being less than three inches. The climate is not dry from any lack of surface water, as it has the Gila and Colorado rivers, the Gulf of California and the broad Pacific Ocean to draw from. But the singular fact remains that the country is extremely dry and that it does not rain as in other lands.
Neither is the rainfall deficient from any lack of evaporation. Upon the contrary the evaporation is excessive and according to the estimate of Major Powell amounts fully to one hundred inches of water per annum. If the vapors arising from this enormous evaporation should all be condensed into clouds and converted into rain it would create a rainy season that would last throughout the year.