River, lake and land conservancy in portions of the provinces of Anhui and Kiangsu, north of the Yangtsze River; . eat obstruction to the passing away of thehavy rainfall which causes the floods, the long duration of which iscaused to a great extent by the canal, and reacting are the greatestsource of danger to the canal and the greatest source of damage to it, 13 being a constant menace to its dykes, which if broken on the easternside endanger the entire usefulness of the canal, and even if thebreaks do occur much of the flood waters are of necessity obliged tofind an outlet through the canal
River, lake and land conservancy in portions of the provinces of Anhui and Kiangsu, north of the Yangtsze River; . eat obstruction to the passing away of thehavy rainfall which causes the floods, the long duration of which iscaused to a great extent by the canal, and reacting are the greatestsource of danger to the canal and the greatest source of damage to it, 13 being a constant menace to its dykes, which if broken on the easternside endanger the entire usefulness of the canal, and even if thebreaks do occur much of the flood waters are of necessity obliged tofind an outlet through the canal, as the canal itself cuts off all otheroutlets; and thus each year, during the months of June, July andAugust at least, the canal is required to carry away an amount ofwater much beyond its maximum capacity. This is a source of greatdanger to its dykes, and even if they do not break they are likely tobe badly damaged, and a great quantity of silt is deposited whichnecessitates the dredging of the channel I which is never done), orthe increasing of the height of the dykes (which is sometimes done). * f ? FAMINE RFLIEF WOUK As a matter of fact nothing is usually done until a serious breakoccurs in the dykes, much damage is done to the low ( Hia) country,and valuable crops are lost with some lives, and then the repairs aremade in a weak, cheap, temporary manner at a tremendous proper outlets the flood level would be lowered, the length ofduration of the floods reduced, the land drained, and the danger anddamage to the canal reduced to a minimum. As has been before stated, the land on the east of the canal ismuch lower than that on the west, from the Yang-tsze River to 14 Thsing Kiang-pu, and north from Thsing Kiang-pu to about cause of this is that during the centuries in which the canal hasbeen in existence it has acted as a dam to the waters coming from thenorth-west, and consequently the greater part of the silt broughtdown by these floods has deposit
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecthydraulicengineering
