DRAINAGE BY MEANS OF PUMPING FROM WELLS IN ARIZONA 
THE DRAINAGE SYSTEM 
According to present plans the completed drainage system will 
consist of pumping plants and wells: provisions for conveying 
pumped water; electric transmission lines, power to operate the 
pumps and short lengths of closed gravity drains in areas D and F. 
In areas A, B, and C, 17, 10, and 14 "drainage pumping plants, 
respectively, were in operation December 31, 1923. The total capaci- 
R. 4 E. 
Sa/f/r'/Ver Project Boundary 
■'Or~t. Ground-wafer Contour 
Area D, October, 1918 
SoU 
p===i C/ay ond Cemented Material 
ESS5 Ca/iche 
E3 Gra vet an d Bo w/ders 
E3 Sand 
Fig. 7, — Map v.ith vertical cross sections showing formations penetrated by wells in 
area D 
ties of these pumps, according to ratings made in September, 1923, 
were 52.5 second-feet for area A; 28.5 second-feet for area B: and 
59.0 second-feet for area C. It is not anticipated that additional 
drainage construction will be required. Placing of wells within 
these three areas at first (1919) was influenced by the location of 
irrigation canals into which pumped water could be discharged, but 
