20 
Colorado Experiment Station 
normal carrying capacity of 50 second feet. Since the 4-foot Ven- 
turi flume has a width of 12 feet at the ends of the structure, it is 
evident that this size should be installed. As the condition exists 
before installing this flume, it is observed that the depth of water 
is approximately 2^ feet. Figure 8 shows the loss of head through 
this size flume, and for a depth of 2^ feet it is observed from this 
01 .02 .03 .04 05.06 .08 .1 2 .3 4 5 .6 .8 1. 2 
^ LOSS OF HEAD IN FEET 
FIGURE 8. — Curves Showing the Loss of Head in Feet in a Four Foot 
Rectangular Venturi Flume for Different Depths and 
Discharges. 
LOSS OF HEAD IN FEET 
FIGURE 9. — Curves Showing the Loss of Head in Feet in a Five Foot 
Rectangular Venturi Flume for Different Depths and 
Discharges. 
