A stream of 135 L/s was diverted from a canal and 100 L/s were delivered to the field. An area of 1.6 hectares was irrigated in 8 hours. The effective depth of root zone was 1.8 m. the runoff loss in the field was 432 m3. The depth of water penetration varied linearly from 1.8 m at the head end of the field to 1.2 m at the tail end. Available moisture holding capacity of the soil is 20 cm per meter depth of soil. Irrigation was started at a moisture extraction level of 50 percent of the available moisture. Determine; a. The water conveyance efficiency b. The water application efficiency c. The water storage efficiency

A stream of 135 L/s was diverted from a canal and 100 L/s were delivered to the field. An area of 1.6 hectares was irrigated in 8 hours. The effective depth of root zone was 1.8 m. the runoff loss in the field was 432 m3. The depth of water penetration varied linearly from 1.8 m at the head end of the field to 1.2 m at the tail end. Available moisture holding capacity of the soil is 20 cm per meter depth of soil. Irrigation was started at a moisture extraction level of 50 percent of the available moisture. Determine; a. The water conveyance efficiency b. The water application efficiency c. The water storage efficiency

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter16: Highway Drainage

Section: Chapter Questions

Problem 10P

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A stream size of 150 lit/sec was released from the diversion headwork to irrigate a land of area 1-8 hectare. The stream size when measured at the delivery to the field channels is 120 lit/sec. The stream was continued for 8 hours. The effective root zone depth is 1.80 m. The application losses in the field are estimated to be 440 m³. The depth of water penetration was 1-80 m and 1-20 m at the head and tail of the run respectively. The available water holding capacity of the soil is 21 cm/m and irrigation was done at 60% depletion of available moisture (A). Find conveyance efficiency (EJ), water application efficiency (Ea), water storage efficiency (E) and water distribution efficiency (Ed). The stream size delivered to the plot was 100 lit/sec.
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