Sample ProblemGiven the following observed flows from a storm of3-hr duration on a watershed with a drainage area of 10 sq. km.Assume that the base flow at the end of the runoff period is6.0 cubic meters per second.TIMEQ(hours)(m³/s)16.021532542151366.01. Determine the directrunoff hydrograph byseparating the baseflow.2. Derive the unithydrograph (for 1centimeter of direct runoff)for the 3-hr rainfall.

1- Determination of Direct Runoff hydrograbh and UNIT hydrograbh ###

Answered: 1. Determine the direct runoff…

1. Determine the direct runoff hydrograph by separating the baseflow. 2. Derive the unit hydrograph (for 1 centimeter of direct runoff) for the 3-hr rainfall.

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

Sample Problem
Given the following observed flows from a storm of
3-hr duration on a watershed with a drainage area of 10 sq. km.
Assume that the base flow at the end of the runoff period is
6.0 cubic meters per second.
TIME
Q
(hours)
(m³/s)
1
6.0
2
15
3
25
4
21
5
13
6
6.0
1. Determine the direct
runoff hydrograph by
separating the baseflow.
2. Derive the unit
hydrograph (for 1
centimeter of direct runoff)
for the 3-hr rainfall.

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