RAINFALL AND DISCHARGE OF THE MURRAY RIVER. LXXIX. 
The same method of computation has been used in this 
case, as in the investigations respecting the relation of 
rainfall to run-off, of the Murrumbidgee and Darling catch- 
ments, referred to in this paper. The catchment comprises 
many remarkable topographical and geological features, 
and has a wide range of climatic conditions and rainfall. 
The maximum rainfall records reach as high as 80 inches 
per annum at Kiandra on the Great Dividing Range, but 
as there are no gauges on the highest peaks of the range 
above Kiandra, it would no doubt be found that, in the 
vicinity of Mount Kosciusko, the records would reach 100 
inches per annum. In the south-western portion of the 
catchment, within the State of South Australia, the 
rainfall during abnormal drought falls as low as two 
inches per annum. With regard to the Victorian trib- 
utaries, there is a high precipitation on the gathering 
grounds of the Indi, Mitta Mitta, Kiewa and Goulburn 
Rivers, and as the watersheds are of an impervious 
character, the percentage discharged is correspond- 
ingly large. The Ovens River has a moderate run-off; on 
the other hand, the run-off of the Campaspe and Loddon 
Rivers is very small indeed, while the Avoca rarely, and 
the Wimmera never, make any contribution to the main 
stream. 
The run-off of the Murray River at Morgan has been 
ascertained from discharge observations carried out by 
the South Australian Water Supply Department, and current 
meter velocity measurements have been used. From the 
tabulated statement and diagram attached to this paper, 
(Appendix ‘‘K’’) it will be seen that in the period under 
review, the average rainfall over the whole of the Murray 
Basin at Morgan is 15°56 inches, or in other words, if the 
whole quantity of water falling on this area were equally 
distributed over the surface, instead of the bulk of the rain 
