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Gourlay, Michael R.
Bourke Lock and Weir - a History: 1. Navigation of the Darling River and the Type of Lock and Weir Required
Engineering Heritage Matters: Conference Papers of the 12th National Conference on Engineering Heritage, Toowoomba, 29 September to 1 October 2003
Sheridan, Norman
Engineers Australia, Barton, Australian Capital Territory, 2003, pp. 59-64

The development of river transport along the Darling River in the late 19th century led to proposals to improve navigation conditions by the provision of a system of locks and weirs. The extreme variability of river flows meant that the river was generally only navigable for 50% of the time and this figure varied widely from year to year. Investigations for the general location of locks and weirs in the river bed and the type of weirs to be used extended over a period of ten years before movable weirs of the Chanoine type were adopted. The size of the locks was determined by the size and type of steamers and barges expected to make use of them. Interstate rivalries and the desire to maximize use of the New South Wales railway system meant that, apart from an experimental lock and weir at Bourke, no proposals for locking the Darling were ever implemented.

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