Show hydroelectric hydro electric on farms fills needs serves as substitute central power service despite the progress made by br power suppliers in electrifying m rat ral america the task Is so vat vart that thousands of f farms arms will not be reached by electric lines lor for several years A number ot of these farms are located far from existing or cy contemplated distribution lines farmers need not have to delay or do without electricity and the con veni erice time and laborsaving labor saving ap p ances and production equipment it operates if they have available a stream which will provide a head ot of water in sufficient volume to operate a hydroelectric hydro electric unit in most case caia a small dam is required and a pond thus formed for power purpose ici also alio may be used for watering stocky fire protection or recreation such units are capable of producing dl di or alternating electric current at low cost and make use of 0 wa j ter which n might otherwise be wasted M I 1 KW unit on a ranch in Blo Mon lani ntina the electrical capacity ot of units such as that illustrated varies fron from vt to 10 kilowatts for example A typical unit will generate one kilowatt with an eight foot head of 0 water having a flow of cubic feet of water per minute As tie the head of water increases the volume required decreases for the operation of a generator of 0 given capacity thus with a head of 25 feet a hydroelectric unit will generate one kilowatt with a volume flow of only 68 S cubic feet of water per minute an eight foot head is all that is needed for those generating from one half to five kilowatts |