86) According to Dicken’s formula, the flood discharge (Q) in cumecs is given by [where C = Flood coefficient, and A = Area of basin in sq km.]

• (a) Q = CA2/3
• (b) Q = CA3/4
• (c) Q = CA5/6
• (d) Q = CA7/8

87) For Madras catchments, the flood discharge is estimated from Q = CA2/3. This formula is known as

• (a) Dicken’s formula
• (b) Ryve’s formula
• (c) Nawab Jang Bahadur formula
• (d) Inglis formula

88) According to Fanning’s formula, the flood discharge (Q) in cumecs is given by

• (a) Q = CA2/3
• (b) Q = CA3/4
• (c) Q = CA5/6
• (d) Q = CA7/8

89) Inglis formula is used for estimating flood discharge for

• (a) the catchments of former Bombay Presidency
• (b) the catchments of old Hyderabad State
• (c) the Madras catchments
• (d) none of the above

90) Nawab Jang Bahadur formula is used to estimate the flood discharge of American catchments.

• (a) Right
• (b) Wrong