Rapport sur les Irrigations et
la Culture du Cotonnier dans la Vallée du Sénégal
(25 March 1922)
|Notes © 2011 by Jim Jones, Ph.D.|
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(p7) After a detailed desciption of the Senegal River, its valley and tributaries, the report mentions that Kayes is at an altitude of only 23m, even though it is nearly 1000km from the ocean. That explains why the river is so flat and tends to silt up.
(p14) Statistics on the level of the Senegal River (1908- 1921), based on information collected by the Chemin de Fer Kayes-Niger at Galougo. Days that the river was at least 1.5 meters deep and flowed at least 300 cubic meters per second.
|Year||Start date||End date||No. days/year|
|1908||June 24||December 5||166|
|1909||June 2||December 18||190|
|1910||July 10||November 24||145|
|1911||June 29||November 18||141|
|1912||July 8||November 12||126|
|1913||July 2||November 3||123|
|1914||July 8||October 30||113|
|1915||June 27||November 4||129|
|1916||July 9||November 25||138|
|1917||July 18||November 27||131|
|1918||June 25||November 19||146|
|1919||July 2||November 25||145|
|1920||June 14||November 18||156|
|1921||July 1||November 28||150|
(p20) The author explained why he thought that the Senegal River could not be used in the same manner as the Nile River.
The relatively warm winter makes it impossible to grow oat
and wheat, ...
(p21) and the irregular floods mean that the amount of irrigated land varies greatly from year to year.