624 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 105 



RIVER LEVELS 

 AFRICA 



NILE RIVER 



Yearly maximum and minimum of gage readings recorded at 



Roda Gage, Cairo * 



Meters 



* Authority, Director-General, Physical Departrnont, Ministry of Public Works, Cairo, Egypt, 

 supplied by Sidney M. Wood, C. K., Lake Bluff, 111. 



Data 



SOUTH AMERICA 



RIO DE LA PLATA 



Annual mean heights at Ro.sario, Argentina * 

 Meters 



1940 



3.30 



* The zero of the scale was raised 1.16 m. on January 1, 1939. All observations after that date have 

 been reduced to the new zero. Authority Dircccion General de Meteorologfa, Geofi'sica e Ilidrologfa 

 Buenos Aires, Argentina, Ing. Alfredo G. Galmarini, Director. 



