An effective rainfall of 2-hour duration produced a flood hydrograph peak of 200 m³/s. The flood hydrograph has a base flow of 20 m³/s. If the spatial average rainfall in the watershed for the duration of storm is 2 cm and the average loss rate is 0.4 cm/hour, the peak of 2-hour unit hydrograph (in m³/s - cm, up to one decimal place) is

An effective rainfall of 2-hour duration produced a flood hydrograph peak of 200 m³/s. The flood hydrograph has a base flow of 20 m³/s. If the spatial average rainfall in the watershed for the duration of storm is 2 cm and the average loss rate is 0.4 cm/hour, the peak of 2-hour unit hydrograph (in m³/s - cm, up to one decimal place) is

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Q- The average rainfall for a 3 hour duration storm is 2.7 cm and the loss rate is 0.3 cm/hr. The flood hydrograph has a base flow of 20 m³/s and produces a peak flow of 220 m³/s. Find the peak of a 3-h unit hydrograph.
A flood was measured from a catchment of 500 square kilometers. The direct runoff from this flood was found to be 3.25 cm. The time distribution of the rainfall is given below in Table. Find the W index for this storm by considering 0.5 cm Interception and depression storage losses. Also find total infiltrated volume of water. Q.2 Time (hr.) 4 7 Total rainfall 1.2 1.45 2.2 3.65 5.09 3.18 1.97 18.74
Problem 1 The storage, elevation and outflow data of a reservoir are given below in Table 1. When the spillway crest is at elevation 300.2 m, the following flood given in Table 2 was expected into the reservoir. If the reservoir surface is at elevation 300.00 m at the commencement of the inflow, route the flood to determine the (a) the outflow hydrograph (b) the reservoir elevation vs time curve Table 1 Elevation, m Storage (S) 106 m3 Outflow discharge (Q) m³/s 299.5 4.8 300.2 5.5 300.7 19 301.2 6.6 50 301.7 7.2 94 302.2 7.9 144 302.7 8.8 200 Table 2 Time, h Flood discharge, m3/s 13 3 25 6 65 75 12 66 15 54 18 40 col i
Sp
Q.2 A catchment having an area of 150 km2 has the ø index 0.3 cm/hr. The base flow at the 3 outlet is 10m³/s. One hour unit hydrograph of the catchment area is triangular in shape with a time base of 20 hours. The peak ordinate occurs at 8 hours. If a rainfall of 4.5 cm occurs in 1 hour, then the peak ordinate of the flood hydrograph will be:
.The probability that the annual maximum flood discharge will exceed 25000 m³/s, at least once in next 5 years is found to be 0.The return period of this flood event (in years,
An effective rainfall of 2 hour duration produced a flood hydrograph peak of 200 m³/s. The flood hygrograph has a base flow of 20 m³/s. If the spatial average rainfall in the watershed for the duration of storm is 2 cm and the average loss rate is 0.4 cm/hour, the peak of 2-hour unit hygrograph (in m³/s-cm up to one decimal place) is
14 The average rainfall for a 3 hour duration storm is 2.7 cm and the loss rate is 0.3 cm/hr. The flood hydrograph has a base flow of 20 m³/s and produces a peak flow of 210 m³/s. The peak of a 3-h unit hydrograph is
A stream conveying a flood peak of 40 m3/s (velocity 1.45 m/s and depth 0.9 m) is divided into 3.1 m long reaches for the solution of the unsteady equations. Calculate the largest value of Δt for which the solution will be stable?