Page:Indian Journal of Economics Volume 2.djvu/282

 268 FROM OFFIOIAL $OUI.OE$ acre feet, i.., enough water to cover that area to a depth of one foot. When liberated the foc a distance diversio:t weir, waters from the Burrinjuck flow o1 the wer nto large reg, flator btilt the main canal runs we& and head works because here a granite bar access the rver excellent fotuclatons foc the wer controlling the cnal during hgh t s so sttated that it the of concrete.. From partly thcogh an down the e.mal is high .class lands to be prowded to allow of river; and the controlled by a Betembed artificially excwed clanel, 59 fee wide o'. the bed, with 2 to 1 slopes, 7 feet depth of flow and a fall of 9 iches to the mile, ad partly through 'a natttral creek, until the irrigable area is 'eached. Thence diverge a series of sidiary channels wkich covey supplies of water each sep,t'ate holdig. This net-work of cnals, dis tribttaries and minor sub- to all also the main canal, is at eonvenien places controlled by a series of cogtdatocs and escapes and is supplied with sluice-gates, ctdvects and road crossings. The escapes ace meant to dspose of sttcplus water through natttral drainage channels, so that the overflow may cause no damage, while provision has also been made for drains to carry away water left after have been satisfied. The construction of this great scheme s achieveme,t ro:n the engineering point of view. idrigation needs an The ste was eltosen for the fleshly there s chantel affocding an.l f,cilities for floods, and secondly becattse commands by gravitation the irrigated. A lock has been steamers passing {tp and been placed to tttrn tke water into a canal to-conduct the water to the area to ha'irrigated. The Beeembed dam follow the natttral channel of the, Mnrcttmbtdgee of 220 tdles to Betembed, witere a consisting o[ c'11apaible shutters, has