THE IRRIGATION AGE. 



fasten the pumps to the main intake pipes, each pipe 

 being supplied with two ball and socket joints in order 

 to permit the barges to adjust themselves to the rise 

 and fall of the river, which is a difference of seventeen 

 feet between high and low water marks. The barge 

 is sixty by twenty-four feet and has three centrifugal 

 pumps, with a capacity of pumping thirty cubic feet per 

 second or a combined capacity of ninety cubic feet per 

 second, or enough water to cover 160 acres with 12 

 inches of water in twenty-one hours. The pumps are 

 run by electric motors supplied with power from the 

 central power house. The barges have been found to be 

 satisfactory during the pumping season, but are a 

 source of expense in the fall and spring, as they have 

 1o be placed on the Jand during the winter to keep them 

 from being damaged by the ice in the spring. There 

 is a probability of a stationary station being built when 



draft. There are two electric generators or dynamos 

 and two steam turbine pumps, with a number of aux- 

 iliary equipments. From this station power will be 

 transmitted to all the pumping stations in the Willis- 

 ton and Buford-Trenton projects. The power house is 

 now being enlarged by an addition of 44 feet and ad- 

 ditional boilers and apparatuses sufficient to approxi- 

 mately double the power-producing capacity of the 

 plant. 



The mine is situated about one-quarter of a mile 

 from the power house and has a vein of 9 feet. The 

 coal is dug and placed on cars holding iy 2 tons. These 

 cars take the coal to the crusher on an inclined track, 

 making any other power for hauling unnecessary. The 

 crusher breaks the coal into lumps of even size and 

 from there it is elevated and distributed into four bins 

 directly in front of the boilers. During part of July 



South of Hillside Lake in Sierras, near Bishop, Cal. 



the bank of the river is riprapped and made safe. In 

 order to dispose of some of the sediments in the water 

 and prevent the canals from being filled, a settling 

 basin was built with the intake about one hundred 

 feet from the river. This basin is 400 feet long, 125 

 feet wide and 10 feet deep, and holds enough water to 

 cover eight acres of land with twelve inches of water. 

 The sediments that gather in the settling basin is sluiced 

 back into the river. The problem which is not settled 

 in that connection is how to loosen this silt in the bot- 

 tom of the basin so as to get it back into the river. 

 But that is a matter that will be worked out to a satis- 

 factory sohition. The basin is constructed of dirt, 

 banks on the inside being protected with brush staked 

 down to keep them from being washed by water. 



The central power house is situated three miles 

 north of the city. The building is constructed of cement 

 concrete and is 92x76 feet. There are six water tube 

 Sterling boilers, with 250-horsepower each. There are 

 three smokestacks 54 inches in diameter and 135 feet 

 high. These furnaces are also supplied with forced 



it required about 100 tons each twenty-four hours, and 

 took 2,338 tons during the whole month. 



The head of the main canal is at the settling basin 

 and extends north to the power house and is about 

 four miles long. The water is let into the main canal 

 through a concrete steel siphon under the Great North- 

 ern tracks. The main canal has a capacity of 100 

 cubic feet per second or enough water to cover one acre 

 of ground 12 inches deep in eight minutes. 



One mile down the main canal is located pumping 

 station No. 2. It is supplied with two pumps, with a 

 capacity of pumping 35 cubic feet of water per second. 

 At this station the water is forced through pipes into 

 the head of another canal, which is 24 feet higher than 

 the main canal. About one mile west of station No. 2 

 is station No. 4. This is supplied with one pump, with 

 a capacity of 20 cubic feet and lifts the water 27 feet 

 into another canal. The canals in this unit, as a rule, 

 carry the water north and are branched to suit the 

 elevations of the land. Most of the excavating and 

 building of the canals was done in the fall of 1907. 



