370 IRRIGATION INVESTIGATIONS IN CALIFORNIA. 



water was thus obtained, which was delivered into the mains and was the main 

 domestic supplj' until Jul}-, 1899. The plant was known as "the domestic pump," 

 and supplied domestic water from the daj' of its installation, December 10, 1898, until 

 the following Jul}', when it was substituted b}' a larger plant, now called "pumping 

 plant No. 2," which is the fourth plant installed by the company, and was put into 

 use May 24, 1899, a short distance above the domestic pump, on the same quarter 

 section. 



The continuation of the drought had by this time made it manifest to the 

 compan}^ that it was necessary for them not only to continue pumping for domestic 

 supply to all their customers, but to develop sufficient water to irrigate the 4,000 

 acres previously irrigated from the reservoir and dependent upon the system for its 

 existence. The first plant put in for this purpose consisted of 32 3-inch hydraulic 

 wells, placed in line across the valley to a uniform depth of 35 feet, and spaced evenly 

 30 feet apart along the suction pipe. This pipe was 10 inches in diameter from the 

 pump for 300 feet, followed by 300 feet of 8-inch, and that in turn b}- 300 feet of 

 6-inch screw casing pipe, 900 feet in all. The pumping plant consisted of a compound 

 duplex steam pumping engine, with a capacity for pumping 1,750,000 gallons in 

 twenty-four hours. An 80-horsepower horizontal tubular boiler furnished steam for 

 the pump, which delivers water directly into the Sweetwater pipe system. The 

 water thus developed amounted to about 100 miner's inches. 



While this plant was in progress of installation work was being actively pushed 

 on a similar plant of large scale for development of additional irrigation water. 

 This was located several miles down the valley at Linwood Grove, on quarter 

 section 98, Rancho de la Nacion. Seventy -five 3-inch hydraulic wells were put down 

 to a uniform depth of 50 feet, spaced 30 feet apart, in 2 rows along either side of 

 .suction mains which radiated from the central pumping station with the cardinal 

 points of the compass. The longest of these suction mains was over one-fourth mile. 

 One well, No. 76, was bored to a depth of 270 feet. The total test yield of all the 

 76 wells was about 400 miner's inches. The plant for pumping consisted of two 80- 

 horsepower horizontal tubular boilers, and two Worthington compound duplex steam 

 pumping engines, one of which has a capacity of 2,250,000 gallons dailj', and the 

 ■other 1,250,000 gallons per twenty-four hours. The works were installed June 9, 

 1899. Thej' deliver water directly into the mains of the company. 



Continuing the search for water the company next installed a sixth plant, which 

 was a restoration of the development of C. A. Hardy, on quarter section 47, above 

 described, which had been abandoned the previous August. Here, instead of the 

 open sump, the company put down fourteen 2-inch drive-point wells, 10 feet deep, 

 and five 3 -inch hydraulic wells, 50 feet deep, to all of which was attached a 5-inch 

 Krogh centrifugal pump, by suitable suction pipe, driven by a 12-horsepower Fair- 

 banks & Morse gasoline engine. This plant developed 33 miner's inches, which was 

 used on the 40-acre alfalfa field. 



At the same time that the last three plants were being installed work was pro- 

 gressing on two auxiliary pumping plants located in the bed of the reservoir itself. 

 The first of these, designated by the company as Plant A, is located at a point about 

 1 mile above the dam, where the sandy bottom lands are about 600 feet wide between 



