STORAGE AND REGULATION OF WATER. XLIII. 



Some Notes on the STORAGE and REGULATION of 



WATER for IRRIGATION PURPOSES. 



By T. Whitchurch Seaver, b.e. 



[Communicated by W. E. Cooke, m.e.] 



[Read before the Engineering Section of the Royal Society of N. S. Wales, 

 December 14, 1905.'] 



The more general and popular questions of Water Conserv- 

 ation and Irrigation, have of late years been much 

 discussed, and from the valuable information which has 

 been collected, with reference to river discharges, location 

 of irrigable areas, and so forth, a clear insight into the 

 whole matter may be obtained. Some time ago several 

 valuable papers were read before this Section, upon such 

 subjects as the equitable distribution of water, property in 

 water, and the chemical nature of soils, besides one which 

 gave a general review of the progress of water conserva- 

 tion in this State. The authors showed that a large 

 amount of water, which, being drained from our own catch- 

 ment areas, was the sole property of this State, and now 

 running to waste, should be conserved and distributed, and 

 they indicated how this could be done, by the construction 

 of storage reservoirs and diversion channels. 



All water conservation and irrigation works may be 

 classed under two general headings of : — 



1. Storage. 2. Regulation. 

 Of these the first may be divided into : — a Run-off ; b Main 

 Storages ; c River Storages ; and the second into works 

 connected with the : — e Controlling ; f Raising ; and g 

 Conveying of the water. 



Even amongst those whose business it is to deal with 

 such matters, it may be doubted if the enormous waste of 



