File:The physiography of the river Nile and is basin (1906) (14758198486).jpg

Identifier: physiographyofri00egyp (find matches)
Title: The physiography of the river Nile and is basin
Year: 1906 (1900s)
Authors: Egypt. Maslahat al-Misahah Lyons, H. G. (Henry George), 1864-1944
Subjects: Water-supply River surveys
Publisher: Cairo : National Printing Department
Contributing Library: University of California Libraries
Digitizing Sponsor: Internet Archive

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- 1877 at Wandi in latitude4° 30 N. where it was then 45 metres wide, more than \r> metres deep,and with steep banks. In 1862 at the end of January, Petherick found this river at Wayoin latitude 4° 45 N. discharging about Ifi cubic metres ))er second andestimates that in flood it would rise to about 72 cubic metres per second.The bed was 117 metres wide, of which some 30 metres were dry andthe water level was 06 metre below flood height. On 27th September1879 Felkin and Wilson crossed it at Amadi in latitude .530 and foundit 180 metres wide, 1*5 metres deep, and flowing with a velocity of 076metre per second, giving a discharge of about 220 cubic metres per 1 Bull. Soc. Geog. .July 1863, p. 17. « Pet.Mitt. 1«81, p. 89 and Uganda and the Egyptian Sudan. 3 Travels in Africa, I. p.451 ONlVESiSITY / c
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o o — 105 — second. Below Amadi there are small rapids. At Bufi in latitudefi- N. at a ford, the river was in October ISHl, 80 metres wide, andabout r25 metres deep. Two .surveys of the river, the first made in November 1S74, andthe second in March 1901 and revised in March 1 !»()■■)■ furnish ameans of comparing the course followed by the Bahr el .Icbel atthese two dates and detcrmiiiim;- the amount of change in the differentreaches during 28^ years. (Plate IX). On comparing the compass survey of 11)03 witli that of Watsonmade in November 1874 it may be generally stated that the agreementin the northern reach from Hellet Nuer to Lake No is extremely closeeven in the smaller curves ; in the middle reaches from Bor to HelletNuer the correspondence is less complete ; for considerable distancescorresponding loops and bends can be readily recognised, but at other))()ints the old main channel has been deserted and a new one excavatedin a former cross-cut or backwater. Further .so

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