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THE VALUE OF DREDGING.

Sir John Goode has provided for an expenditure of L 75.000 on dredging in connection with his plan, which is being followed in constructing the Westport harbor works. So far the result has been favorable. Dredging was commenced at tho end of June or early in July last. Since then the river has been dredged from hay No. 13 of the coal staiths to a point 200 ft below the staiths. Taking tho depth of soundings near one of these bays as an example, and tho one we propose to take is a fairly average one, the results are shown by the record kept by Captain Leech, tho harbor-master. In July, shortly after tho dredges commenced work, soundings were taken opposite hay 33 at low spring tide giving tho following depths : Alongside the wharf, lift Bin._ Twenty feet off wharf, 15ft lOin. Forty-five feet off wharf, 14ft lOin. Early in the mouth of August tho next soundings were taken and showed tho depths to be respectively 15ft, 18ft sin, and 18ft llin. On August 31 the soundings gave 15ft 3in, 18ft 3in, and 16ft Sin, while on September 20 tho depth was 21ft 4in, 20ft 4in, and 20ft 4in. A similar increase is now found wherever the dredges have been working. It will bo argued that the recent fresh iu the river caused a scour, hut to that it may be replied that had dredging operations not been undertaken, nothing like the scour now shown would have taken place. The bed of tho river would not have been disturbed, and no such surprising change for the better, ns now is proved to exist, would have taken place. So far from being useless, experience here, as in hundreds of other places, has demonstrated tho necessity for dredging. At present, though the river is deepening, there is always sft or 6ft more water on tho bar than in the shallowest portions of the navigable river channel. At high tide on Saturday there was 24ft 6in on the bar and 18ft 6in in tho river. Under such circumstances the bar may ho said to exist in the river. In the face of such excellent results it is not possible to accept adverse criticism on tho employment of dredges,—‘News,’

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https://paperspast.natlib.govt.nz/newspapers/ESD18891009.2.34

Bibliographic details

THE VALUE OF DREDGING., Issue 8033, 9 October 1889

Word Count
379

THE VALUE OF DREDGING. Issue 8033, 9 October 1889

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