$78 



Irrigation and Drainage 



:'% 



Fig. 107. Head ditch or cement flume for orange orchard, 

 Redlands, California. 



Figs. 105 and 106, so that the surplus water from -the 

 furrows in the upper one is collected in a foot ditch 

 shown in the center of Fig. 105, and redistributed in 

 a second set of furrows crossing a lower level, shown 

 in Fig. 106. The water may be controlled by a simple 

 gate in a sluice -box, shown at 1,1 in Figs. 105 and 



