The Venturi Flume 
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LOSS OF HEAD IN FEET 
FIGURE 6. — Curves Showing the Loss of Head in Feet in a Two Foot 
Rectangular Venturi Flume for Different Depths and 
Discharges. 
LOSS OF HEAD IN FEET 
FIGURE 7. — Curves Showing the Loss of Head in Feet in a Three Foot. 
Rectangular Venturi Flume for Different Depths and 
Discharges. 
The use of these diagrams is in approximating the increase in 
depth of water in the canal above the flume due to the obstruction 
caused by the throat section. As an example of the application, let 
it be assumed that the canal is 12 feet wide on the bottom with a 
