CHEMICAL COMPOSITION OF RIVERS AND LAKES 



G35 



Table 65. — Analyses, in parts per million, of water from Nigeria 



[Analysis B Is from the unpublished records of the Chemistry Dly. Ministry Health, 

 Kaduna, Nigeria. All others are from the unpublished records of the Federal 

 Depart. Chemistry, Lagos, Nigeria) 



A. Niger River at Lokoja, Kabba Province, June 23, 1957. 



B. Niger River at an unspecified place, Mar. 1958. 



C. Orogodo River at Agbor, Benin Province, May 19, 1951. 



D. Ogun River at Iju, Colony Province, June 13, 1957. 



E. Ogun River at Iju, Colony Province, July 13, 1956. 



F. Ogun River at Iseyln-Oyo Rd„ Oyo Province, Aug. 11. 1954. 



Although there are a large number of analyses in 

 the unpublished reports of the Ministre de l'Algerie, 

 the analyses unfortunately do not show the potassium 

 and silica content. A small number are presented 

 in table 70. Some older analyses for rivers of Algeria 

 are given in previous editions of this book. None of 

 these waters is extremely concentrated, because the 

 analysts have been concerned more with drinking water 

 supplies than with the true nature of the waters of 

 Algeria, at least some of which must be as concentrated 

 as any in the world. The well-watered coastal strip is 

 probably adequately represented by the analyses in 

 table 70. 



Table 66. — Analyses, in parts per million, of water from Colony, Ghana 

 [All analyses from Dunn (1947). For most analyses collection dates are not given] 



A. River Ofln below junction of Ajimasu and Subin streams. J. 



B. River Ofln at Dunkwa, above junction with River Jimi. 



C. Frimpoma stream, Dunkwa. K. 



D. Otin stream, Dunkwa. L. 



E. Enikawkaw stream, Dunkwa. M. 



F. Unnamed stream at Tarkwa. N. 



G. Suhien stream, Koforidua. O. 

 H. Okumesu stream, Koforidua, Jan. 1933. P. 

 J, Reservoir at Brimsu. Mean of 3 analyses during the months of March and Q. 



May. 



Reservoir at Incbaban. Mean of 2 analyses during the months of April and 



June. 

 River Prah, Bepose bridge. October. 

 Tetteh Pool, Asikaisu, near Kibi. 

 River Adeiso, Adeiso, near Kibi. 

 Zongo Pool, Adeiso, near Kibi. 

 Small stream, Kissiedoo, near Kibi. 

 River Densu at Nsawam. Mean of 2 analyses. 

 River Volta about 1.5 miles north of Kpong. Apr. 1946. 



Table 67.- 



-Analyses, in parts per million, of water from Ashanti, 

 Ghana 



' Includes 117 ppm COr 1 . 



A. Owabi stream, Kumasi. Mean of 8 analyses of samples taken above and below 



the dam during the months of Feburary, March, June, August, and October. 



B. River Aboabo, just south of Kumasi. 



O. Stream flowing into Aboabo, close to railway. 



D. Stream near Mampong, Ashanti. Mean of 2 analyses. 



E. River Adra near Kumasi. 



F. River Adega near Kumasi. 



G. River Ankonia near Kumasi. 



H. Lake Bosumtwi near Isasi. Mean of 2 analyses by W. H. Bennett from depths 

 of 3 and 4 ft below surface. 



Table 68. — Analyses, in parts per million, of water from Northern 

 Territories, Ghana 



c. 



River Naboggo, Pong Tamale. Mean of 2 analyses, October and December. 

 Tamale Reservoir. Mean of 5 analyses, months of Feburary, March, May, 



November, and December. 

 Small stream, Tamale. Feb. 1933. 



