FARM ORGANIZATION IN SOUTHERN ARIZONA. H 
Santa Fe, and the country west, east, and southeasl of Phoenix 
by the Southern Pacific. Both systems center in Phoenix. 
YUMA VALLEY. 
Yuma Valley constitutes that portion of the valley of the Colorado 
River lying between the town of Yuma and the Mexican bolder 
It is bounded on the north and west by the river, and on the east 
by mesa lands. It contains approximately 55,000 acres. lis soils 
are all sands, sandy loams, and loams deposited in recent geologic 
times by the Colorado River. They are described and mapped 
in the bulletin isued in 1902 by the Bureau of Soils of the United 
States Department of Agriculture entitled "A Soil Survey of the 
Yuma Area, Arizona." The valley is under one of the projects of 
the United States Reclamation Service, which is designed to irrigate 
130,000 acres of lands in California and Arizona, 40,000 acres of 
which lie on the mesa at an elevation of about 60 feet above the val- 
ley, and to which water will be raised by pumping. The mesa lands 
are adapted to the raising of grapes and citrus fruits, but have not 
as yet been opened for settlement. The valley lands have all. been 
filed upon and farms can be obtained only by purchase. When the 
irrigation project is completed it will furnish abundance of water 
to all lands under it. 
As stated in the Fourteenth Annual Report of the United States 
Reclamation Service, the cost of the project to June 13, 1915, was 
$7,936,000 and at that time 57 per cent of it was completed. Of 
this cost, $2,035,310 was for a flood protection system. The pro- 
portion of the cost of the project to be assessed against the land has 
not yet been determined, but whatever the assessment it will con- 
stitute a lien upon the land. As in Salt River Valley, lands in Yuma 
Valley are sold subject to the lien for the cost of the irrigation project, 
and this cost is not covered by the purchase price of the land. 
The climate of this valley is very similar to that of Salt River 
Valley, the summers being slightly longer and warmer, and the rain- 
fall about half as great. The growing season for alfalfa and cotton is 
somewhat longer, assuring slightly greater total annual yields. The 
soil and climate seem to be particularly well adapted to the pro- 
duction of alfalfa seed, and this is the most profitable crop grown. 
In other respects crops are quite similar to those grown in Salt 
River Valley and need no special discussion here. Their relative 
importance is shown in the table following taken from the Reclama- 
tion Record (Vol. 8, No. 3, p. 106), United States Reclamation 
Service. 
Animal' industry is not as far advanced in Yuma Valley as it is 
in Salt River Valley. A creamery has been built recently at Yuma, 
and the owner by lending money for the purchase of cows is inducing 
