. Arbor day and bird day ... October 27, 1922 . t might serve as sites for water power dams, could be ttsed only at very greatexpense: for in addition to the cost of the dam there would be the cost of elevating railroads,usually involving the securing of new rights-of-way, and of moving any towns that would beflooded by the waters above the dam. Conservation of the States water powers will be along four lines: 1. The utilization of possible power site,s for the development of power not now used. 2. The building of storage dams in the upper valleys of the rivers for storage of waterduring the s
. Arbor day and bird day ... October 27, 1922 . t might serve as sites for water power dams, could be ttsed only at very greatexpense: for in addition to the cost of the dam there would be the cost of elevating railroads,usually involving the securing of new rights-of-way, and of moving any towns that would beflooded by the waters above the dam. Conservation of the States water powers will be along four lines: 1. The utilization of possible power site,s for the development of power not now used. 2. The building of storage dams in the upper valleys of the rivers for storage of waterduring the spring floods, to be let out during low water periods, and thus to equalize the flow. 3. It is now customary to design water power plants so as to utilize only such portion ofthe power as can be depended unon for eight or nine months of the year, using a standbysteam plant to help out during the extreme dry season. In this way often more than half ofthe possible available water power is not utilized. By building a steam plant that will carry 29. 30 all of the desired load except that to be furnished by the water-power plant duriny extreme lowwater, and then building a water plant to utilize all of the power of the stream, except duringextreme flood periods, the water power plant becomes the standby plant in a sense, thetwo supplementing each other, so that all the power possible from the stream is this method the power derived from any stream may be greatly increased or even multipliedtwo or three times. 4. Ordinarily, a local water-power plant and its auxiliary steam plant form a separateunit. It has recently been proposed to link together all of the power plants—water andsteam—in the eastern part of Pennsylvania and in adjoining areas, into a superpowersystem. As a rule, power plants have to meet an uneven load, with a peak load duringcertain hours of the day or during certain seasons of the year, and periods of small demandduring other hours or seasons. The pe
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectflowers, bookyear1922
