4. The peak of flood hydrograph due to a 3-h duration isolated storm in a catchment is 270 cumecs, Total depth of rainfall is 5:9 cm. Assuming an average infiltration loss of 0:3 cm/h and a constant base flow of 20 cumecs, estimate the peak of 3-h unit

4. The peak of flood hydrograph due to a 3-h duration isolated storm in a catchment is 270 cumecs, Total depth of rainfall is 5:9 cm. Assuming an average infiltration loss of 0:3 cm/h and a constant base flow of 20 cumecs, estimate the peak of 3-h unit

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

4. The peak of flood hydrograph due to
a
3-h duration isolated storm in a catchment
is 270 cumecs, Total depth of rainfall is
5:9 cm. Assuming an average infiltration loss
of 0:3 cm/h and a constant base flow of
20 cumecs, estimate the peak of 3-h unit
AK-21/258
( Turn Over )
( 6 )
hydrograph. If the area of catchment is given
as 567 sq.km, determine the base width of
3-h unit hydrograph assuming it to be
triangular in shape.

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