Q2a). State TWO (2) assumptions of using the Rational method for computing runoff. b). Explain eachof the following terms in relation to determining storm runoff.
i. Time of concentration
ii. Runoff coefficient
iii. Return period

c).With the aid of a sketch, explain a hydrograph.​

Q2a). State TWO (2) assumptions of using the Rational method for computing runoff.

b). Explain eachof the following terms in relation to determining storm runoff.
i. Time of concentration
ii. Runoff coefficient
iii. Return period

c).With the aid of a sketch, explain a hydrograph. Bc c. F d wmakskd
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C. c is the correct answer.