— 91 — 
to be done will be to construct a weir or barrage at the outlet of the 
Albert Lake, at Wadelai, or lower down at Dufile. I should say, judg- 
ing from the map and the cross section, that Wadelai itself would be 
an excellent site for a weir. I have advocated this project in season 
and out of season these ten years, and now that actual discharges and 
figures are before me I am more than ever convinced that I was no 
untrue prophet when I wrote in my book on “The Assuan Reservoir 
Dam and After” that “the point where Lake Albert ends and the Albert 
Nile begins to have a rapid and contracted stream will be the site of 
the future great regulator or barrage of the upper waters of the Nile. 
This work will be here or at Dufile.” Such a work would cost anything 
between £400,000 and £1,000,000. 
“ If such a work were carried out it would be possible to insure 
every year a discharge of between 1,000 and 1,500 cubic metres per 
second at Gondokoro from the 15th of January to the 15th of May, i.e., 
during the months which determine the summer water supply of the 
White Nile for Egypt. Such a quantity of water would insure 435 
cubic metres per second at the head of the White Nile, as it has done 
this year, even under existing conditions ; while with training and 
dredger work in the Albert Nile and Bahr Zeraf between Gondokoro 
and Lake No, it might be increased to 600 cubic metres per second, 
and even more. The way in which this work of training should be 
carried out has been admirably laid down on page 174 of Sir William’s 
Report”. 
There are moreover other reasons I think for condemning the exca- 
vation of a straight cut 340 kilometres in length across the eastern 
corner of the Sudd regions. The reasons are to be found in Sir Wil- 
liam Garstin’s Report itself. One of the most interesting features of 
this report is the number of actually measured discharges at different 
sites. Of all these sites Gondokoro, the southern key of the Sudd 
region, is the most interesting. 
It is very evident from an examination of Sections Nos. 18, 19, 26 
and 27, Plate VIII of Sir William’s Report, that the Albert Nile at 
Gondokoro scours out its bed very severely after a high flood like that 
of 1903. The width of the section is about 230 metres with vertical 
sides, and yet while a gauge of ’50 metres on the 1st April 1903 
(after the low year of 1902) gave a section of 615 square metres ; on 
the 9th September 1903 (after a good year), the section was 1,347 
square metres for a gauge of 2.33 metres. In other words, a rise of 
