Question

An unlined irrigation canal runs parallel to a river and the cross section is shown below. The soils in the region are generally stiff clays that are assumed to be impervious. There is a 200 mm-thick sand seam connecting the canal and river as shown, which continues to a length of 3.0 km along the river. Assuming that the permeability of the sand is 2.3 x10-2 cm/s, compute the quantity of water lost from the irrigation canal per day.

Answer 1

Answer:

Explanation: . An unlined irrigation canal is aligned to a river, as shown in the following figure. This cross-section continues for 4.25 miles. The soils are generally clays, but a 6-in. thick sand seam is present as shown below. The sand has permeability k river due to seepage through this sand layer and express your answer in acre-ft per month Note: One acre-foot is the amount of water that would cover one acre of ground to a depth of one foot, and this equals 43,560 ft el, 187 ft Sand seam Can Clay el. ft 121 500 ft Clay River  

An unlined irrigation canal is aligned to a river, as shown in the following figure. This cross-section continues for 4.25 miles. The soils are generally clays, but a 6-in. thick sand seam is present as shown below. The sand has permeability k = 9 times 10^-2 cm/s. Compute the water loss from the canal to the river due to seepage through this sand layer and express your answer in acre-ft per month.