Problem 4. An irrigation system consists of 5 parallel triangular-shaped swales (Fig. 4). The earthen swales are clean and recently completed, and its bed drops 1 ft per 200 ft. 1. Given the water depth h is 2 ft in the canal, calculate the total flow rate of the irrigation system using the Chézy equation and Manning's formula. 2. The height of the swales are H = 1 m. Suppose that the flow rate in the channel is increased by 50% due to a recent storm, are the swales deep enough such that the water does not spill over the top? H

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Problem 4. An irrigation system consists of 5 parallel triangular-shaped swales (Fig. 4).
The earthen swales are clean and recently completed, and its bed drops 1 ft per 200 ft.
1. Given the water depth h is 2 ft in the canal, calculate the total flow rate of the irrigation
system using the Chézy equation and Manning's formula.
1 m. Suppose that the flow rate in the channel
2. The height of the swales are H =
is increased by 50% due to a recent storm, are the swales deep enough such that the
water does not spill over the top?
H
Figure 4: An irrigation system consists of 5 parallel triangular-shaped swales. The angle a =
45°. Figure not to scale.
Transcribed Image Text:Problem 4. An irrigation system consists of 5 parallel triangular-shaped swales (Fig. 4). The earthen swales are clean and recently completed, and its bed drops 1 ft per 200 ft. 1. Given the water depth h is 2 ft in the canal, calculate the total flow rate of the irrigation system using the Chézy equation and Manning's formula. 1 m. Suppose that the flow rate in the channel 2. The height of the swales are H = is increased by 50% due to a recent storm, are the swales deep enough such that the water does not spill over the top? H Figure 4: An irrigation system consists of 5 parallel triangular-shaped swales. The angle a = 45°. Figure not to scale.
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