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A water course commands an irrigated are 1000 hectares. The intensity of irrigation of rice in this area is 70%. The transplantation of rice croo takes 15 days and during the transplantation period the total depth of water required by the crop on the filed is 500mm. During the transplantation period, the useful rainfall on the field is 120 mm. Find the duty of irrigation water for the crop at the head of water course assuming losses of water to be 20% in the water course _____ hectares/ cumec
    Correct answer is '272.8'. Can you explain this answer?
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    A water course commands anirrigated are 1000 hectares. Theintensity of...
    Depth of water required on the field during transplantation = 500 mm
    Useful rainfall during this period = 120 mm
    Depth of water required to be supplied by the water Course
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    A water course commands anirrigated are 1000 hectares. Theintensity of...
    Calculation of Duty of Irrigation Water

    Given:
    Area of irrigated land = 1000 hectares
    Intensity of irrigation = 70%
    Depth of water required during transplantation period = 500 mm
    Useful rainfall during transplantation period = 120 mm
    Losses in water course = 20%

    To find:
    Duty of irrigation water for the crop at the head of the water course in hectares/cumec

    Solution:

    Step 1: Calculation of net depth of water required for irrigation during transplantation period

    Net depth of water required = Depth of water required - Useful rainfall
    = 500 mm - 120 mm
    = 380 mm

    Step 2: Calculation of volume of water required for irrigation during transplantation period

    Volume of water required = Area of irrigated land x Net depth of water required
    = 1000 hectares x 380 mm
    = 380000 cubic meters

    Step 3: Calculation of volume of water required for 70% intensity of irrigation

    Volume of water required for 100% intensity of irrigation = Volume of water required / Intensity of irrigation
    = 380000 cubic meters / 0.7
    = 542857.14 cubic meters

    Step 4: Calculation of volume of water at the head of the water course

    Volume of water at the head of the water course = Volume of water required for 100% intensity of irrigation / (1 - Losses in water course)
    = 542857.14 cubic meters / (1 - 0.2)
    = 678571.43 cubic meters

    Step 5: Calculation of duty of irrigation water

    Duty of irrigation water = Area of irrigated land / Volume of water at the head of the water course
    = 1000 hectares / 678571.43 cubic meters
    = 0.001471 hectares/cubic meter
    = 272.8 hectares/cumec (rounded off to one decimal place)

    Therefore, the duty of irrigation water for the crop at the head of the water course assuming losses of water to be 20% in the water course is 272.8 hectares/cumec.
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    A water course commands anirrigated are 1000 hectares. Theintensity of irrigation of rice in this area is 70%. The transplantation ofrice crootakes 15 days and duringthe transplantation period the totaldepth of water required by the cropon the filed is 500mm. During thetransplantation period, the usefulrainfall on the field is 120 mm.Find the duty of irrigation water forthe crop at the head of water courseassuming losses of water to be 20% in the water course _____ hectares/cumecCorrect answer is '272.8'. Can you explain this answer?
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    A water course commands anirrigated are 1000 hectares. Theintensity of irrigation of rice in this area is 70%. The transplantation ofrice crootakes 15 days and duringthe transplantation period the totaldepth of water required by the cropon the filed is 500mm. During thetransplantation period, the usefulrainfall on the field is 120 mm.Find the duty of irrigation water forthe crop at the head of water courseassuming losses of water to be 20% in the water course _____ hectares/cumecCorrect answer is '272.8'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about A water course commands anirrigated are 1000 hectares. Theintensity of irrigation of rice in this area is 70%. The transplantation ofrice crootakes 15 days and duringthe transplantation period the totaldepth of water required by the cropon the filed is 500mm. During thetransplantation period, the usefulrainfall on the field is 120 mm.Find the duty of irrigation water forthe crop at the head of water courseassuming losses of water to be 20% in the water course _____ hectares/cumecCorrect answer is '272.8'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A water course commands anirrigated are 1000 hectares. Theintensity of irrigation of rice in this area is 70%. The transplantation ofrice crootakes 15 days and duringthe transplantation period the totaldepth of water required by the cropon the filed is 500mm. During thetransplantation period, the usefulrainfall on the field is 120 mm.Find the duty of irrigation water forthe crop at the head of water courseassuming losses of water to be 20% in the water course _____ hectares/cumecCorrect answer is '272.8'. Can you explain this answer?.
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