^82 Appendices 



tained was very highly satisfactory. Over an accessible sur- 

 face the water was evenly distributed, and when the irrigation 

 was completed, there was no injurious excess in low places or 

 deficiencies upon the higher elevations of the surface. 



"■ The equipment with which these results were obtained 

 embraced the following: One 15 horse-power gasoline engine, 

 one 6-inch centrifugal Krogh pump, one truck 8-inch tread 

 of tire, three thousand feet of 8-inch wrought-iron pipe with 

 fittings, including priming pump, jack screws, oil tank, and 

 duck cover; and cost $2,000. 



" The capacity of the equipment was equal to the duty of 

 irrigating throughout the season 500 acres of land, and upon 

 that area would supply all the water necessary for any species 

 of cultivation desired, whether of alfalfa or orchard. Its 

 capacity was equal to 1,200 acres of orchard land, and, as 

 already noted, the original investment was but $2,000. 



** To recapitulate these conclusions, the experiment in Capay 

 Valley demonstrated that a stationary pump, eliminating the 

 cost of trucks designed to make the equipment portable, with 

 2,500 feet of pipe, cost less than $1,600. For orchard pur- 

 poses the eJ9&ciency would be equal to the duty of irrigating 

 1,200 acres of orchard or 500 acres of alfalfa throughout the 

 entire summer season, and the application of 135,000 gallons 

 of water to each acre during the season would cost $1.65 per 

 acre for the season, not including the labour of moving the 

 pipes; or if the labour of moving the pipes is included, $1.75 

 for the season. 



"Aside from the advantages already noted, the superior 

 efficiency of applying the water to the entire surface of the 

 land and the control of the quantity of water placed upon the 

 land, the interest on the original cost of the equipment is to be 

 considered. It is doubtful if, by a canal system, lands any- 

 where in the State can be laid subject to an irrigation system 

 for less than an original cost of $10 per acre, and this original 

 investment would be permanent and the interest element 

 connected therewith would be a perpetual charge against the 

 original equipment. $10 an acre for 1,200 acres of orchard 

 would be $12,000, or for 500 acres of alfalfa $5,000, as against 

 $1,500, the original cost of a coefficient pumping plant. 



