Question

    _____ is commonly used method of flood

    control 
    A Vertical drainage Correct Answer Incorrect Answer
    B Leeves Correct Answer Incorrect Answer
    C Parallel open ditch system Correct Answer Incorrect Answer
    D Land grading Correct Answer Incorrect Answer

    Solution

    Commonly known as embankments or dykes They are used in conjugation with drainage works to exclude runoff from uplands. They are the commonly used method of flood control in flood plains and coastal regions and has limited applicability in agricultural drainage

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