Weed growth in a canal invariably leads to-
Reduction in discharge
Q is the discharge (volume of water flowing per unit time) A is the cross-sectional area of flow V is the average velocity of flow Assuming the cross-sectional area A remains relatively constant (or effectively decreases slightly due to weeds), a decrease in the velocity (V) will directly result in a decrease in the discharge (Q). Therefore, weed growth in a canal invariably leads to a reduction in discharge.
Important Questions from Design of Canals
Upon a detailed topographical investigation, an engineer wants to align a canal. Along which of the following should be align the canal?
Which of the following components of the weir divides the river width into weir portion and under sluices pocket?
Which canal irrigates only on one side because the area on the other side is higher?
In which type of canal escapes is the crest of the weir wall kept at R.L. equal to the canal FSL?
If the discharge in canal equals to 70 m3/s with it silt factor √2, the velocity of flow in canal as per Lacey’s theory is
