LXXxVIII. R. T. McKAY, 
in that condition till the end of November, the beginning 
of the abnormally dry period which extended to April 1903. 
The severe tax on the storage capacity would have 
rendered it necessary during the height of the drought 
to reduce the irrigation supply and limit the riparian 
flow to 400 cusecs. The reservoir would have proved 
capable of meeting the requirements, but nevertheless 
would have been almost empty in March 1903. From that 
date onward it would have gradually refilled, and over- 
flowed in January 1904. The full irrigation and riparian 
supplies would have been provided from June, 1903, until 
the end of the five years period of the investigation, viz., 
December 1904. The water level in May 1904 would have 
receded to 168 feet, or 32 feet below top water level, but 
in September.of that year it would have refilled and over- 
flowed. 
The Murray River at Morgan.—The town of Morgan, 
Situated at about 200 miles from the point where the 
Murray River enters the Pacific Ocean, is the lowest 
station on the river at which discharge measurements 
have been taken. The Murray at Morgan drains an 
immense territory, the catchment area being no less than 
408,000 square miles. Seeing that no previous investiga- 
tion has been made to determine the relation of rainfall to 
run-off, over this catchment area, the author has collated 
all information relating to the matter in order to arrive at 
certain definite conclusions. He has compiled the rainfall 
records of the various State Observatories, and divided the 
whole area into sub-areas, comprising :— 
(1) The Darling River catchment at Wilcannia. 
(2) The Darling catchment south of Wilcannia to the 
junction of the Murray River at Wentworth. 
(3) The catchment of the Murray River above Mildura, 
(4) The Murray basin in Victoria below Mildura. 
(5) The Murray basin in South Australia above Morgan. 
