90 — 
“ I have taken the following figures from Sir William’s report and 
from the gauge records of the Public Works Ministry : — 
Discharge in Cubic Metres per Second During February, March, 
* and April of the Albert Nile. 
1901. 
1902. 
1903. 
1901. 
At Gondokoro above Bor 
. 600., 
.. 600 .., 
. 700 . 
.. 1,000 
Upstream of the month of the Sobat river .. 
. 300 .. 
. 300 ... 
350 ., 
.. 435 
“Now, in a year like 1901 or 1902, with 600 cubic metres per second 
passing Gondokoro, the diversion canal might be allowed to take in 
500 cubic metres per second, leaving 100 cubic metres per second for 
the Albert Nile, Atem river, and all the Nuer, Dinka, and Shillook 
country between Gondokoro and the Sobat mouth. An allowance of 
100 cubic metres per second would not be liberal, and would probably 
result in the water becoming stagnant and very impure ; but we shall 
leave that alone. Starting with 500 cubic metres per second of clear 
water the high level diversion canal would never lose less than 50 
cubic metres per second through percolation and evaporation before it 
reached the Sobat mouth. Many authorities would put the loss at 
40 per cent., but we shall say 10 per cent. 
“We should then have 450 cubic metres per second entering the 
White Nile at its head, just at the end of the Albert Nile and at the mouth 
of the Sobat river. At this point, however, under normal conditions 
the Albert Nile would have been discharging 300 cubic metres per 
second. This supply, after the opening of the diversion canal, would 
have failed utterly, as the waters of the Albert Nile would have been 
diverted down the diversion canal. Whatever water there was in the 
Albert Nile would, moreover, have been at so low a level that it could 
not have flowed down the White Nile together with the high level 
water of the diversion canal. We should therefore have had in a 
year like 1901 and 1902 a net gain of 450 less 300 cubic metres per 
second, or 150 cubic metres per second at the head of the White Nile. 
By the time this extra water reached Assuan it would have become 
100 cubic metres per second. 
“ If this project, or any other project of any kind, is ever to be 
carried out on the upper waters of the White Nile, the very first thing 
