The following is the hydrograph resulted from a rainfall intensity of 2 cm/hr for a duration of 2 hours. If the index for the catchment is 0.5 cm/hr, use this information to develop the 2h.UH The Hydrograph Time (hours) Q (m³/s) 0 10 40 2 28 3 22 4 16 5 10

The following is the hydrograph resulted from a rainfall intensity of 2 cm/hr for a duration of 2 hours. If the index for the catchment is 0.5 cm/hr, use this information to develop the 2h.UH The Hydrograph Time (hours) Q (m³/s) 0 10 40 2 28 3 22 4 16 5 10

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: H.W a -A 3 hours storm produces a flood hydrograph as: t (hr) Q (m²/s) |0 3 6 9 | 4 9 12 18 | 12 15…

Q: Consider the catchment area shown in the figure below has three rain gauges as labeled. For the…

A: A method for determining the importance of point rainfall data in terms of area. Perpendicular…

Q: Question 2: using rational method, calculate the peak flow for an urban catchment has an area of 85…

Q: You have been given a 1-hour unit hydrograph (1 unit = 1 cm) and have been asked to use it to derive…

Q: 9.24 The rainfall excesses derived from the weighted-average daily rainfall in a basin are indi-…

A: Given,

Q: total of 10 mm of rainfall fell on a lake with a surface area of T km^2 in June 1996. Related the…

Q: a. Derive a 2-hour Unit Hydrograph for a Watershed Area of 2600 acres. The total 2 hour rainfall was…

A: Watershed area = 2600 acres2 hr rainfall = 6 inrunoff for first two hours = 0.8 in = 2.032…

Q: An engineer who is working in a water resources planning project estimated flood data and base flow…

A: Introduction- The difference between total rainfall and actual evapotranspiration is equivalent to…

Q: Given below are the measured streamflow in cfs from a storm of 6-hour duration on a stream having a…

Q: 0.81 and 0. 70. Generate AR(l) and AR(2) models. For a recorded time series, the strearnflow values…

Q: Q5: given the following 1 hr. unit hydrograph for two storms. duration each having a rainfall excess…

Q: Consider the catchment with recorded rainfall values as per the figure below (take the decimal point…

A: Hi there, the Thiessen method cannot be applied for the given problem since the area of each station…

Q: Problem 2: A square shape catchment with 100 km² area has five raingauge stations at the center of…

A: Given: Square catchment area of 100 KM2 Station and precipitation of five rain gauge station are…

Q: 2. The Friends Creek watershed has five rainfall gauges at the locations shown in the figure below.…

A: given data,five rainfall gauge location and recorded rainfall is givenFindmean area rainfall by…

Q: The ordinates of flood hydrograph resulting from a storm of 5 hr duration are given below: Time (hr)…

Q: In reference to the Table below: Day 1 4 6. 7 Rainfall, mm 11 8. 13 11 Water added, mm -5 -3 7 4…

Q: Given is the hydrograph of 2 hour, find the unit hydrograph of 4 hours. The value of excess rainfall…

A: Excess Rainfall = 12 cm Base flow = 20 m3/s 2 hr Hydrograph = Time 0 2 4 6 8 10 12 14 Ordinates…

Q: 1. Determine the direct runoff hydrograph by separating the baseflow. 2. Derive the unit hydrograph…

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

Q: The ordinates of the hyetograph of a 6-hr duration rainfall is given below. If the direct runoff is…

A: It is a rate of infiltration in which, the rate of infiltration exceeds the value at which the…

Q: You have the following hydrograph for two consecutive storms with 4 hours duration each. Estimate…

A: solution: N-days→is the etween peak flow and when flow is converging to base flow

Q: Question 1 An annual flood series contains 100 years of flood data. For a return period of 200 years…

A: Given- An annual flood series contains 100 years of flood data. The return period, T = 200 years.…

Q: The following table show the precipitation in (mm/hr.) observed at the rain gages (A, B, and C)…

A: Precipitation is the process of water in which water gets into the air form by heat, which gets in…

Q: Find the average precipitation for the catchment area shown in Figure (1) below using Thiess method.…

Q: The time of concentration of a 5.8ha catchment has been estimated as 33 minutes. Estimate the peak…

A: Given, C = 0.61 i = 49 mm/hr A = 5.8 ha

Q: 4. Assuming that all groundwater runoff to the oceans comes from fresh groundwater, calculate the…

A: Residence time is the amount of material in the reservoir, divided by either the inflow or the…

Q: Engineering hydrology - hydrograph analysis

A: Step 1:Step 2:

Q: RAINFALL RAINFALL DEPTH INTENSITY

Q: ) At the beginning of the month of June, water level of a reservoir with surface area of 7km² was at…

A: Catchment Area: A catchment is a space of land where water gathers when it downpours, regularly…

Q: Q1 - Fora (200 x100 km Rectangular catchment are shown below the reciption rain gages: A = 21, B =…

A: GIVEN CATCHMENT AREA RAIN GAUGE READING FOR DIFFERNT LOCATION A=21MM B=31MM C=25MM D=35MM E=30MM…

Q: rXS 20 rxss COD: 35 mg/L, BOD: 7 mg/L, AN: 2.5 mg/L, SS: 475 mg/L, pH: 5, DO: 5 mg/L SICOD-991-133X…

A: AN=2.5mg/L DO=5mg/L

Q: Consider the catchment area shown in the figure below has three rain gauges as labeled. For the…

A: PA = 65 mm PB = 49 mm PC = 81 mm Pmean = ? Draw the lines as per Thiessen polygon method and…

Q: In reference to the Table below: Day 1 4 Rainfall, mm 11 8. 13 6. 11 Water added, mm -5 -3 4 3…

A: We have to find Lake evaporation of the given problem. we have to use total evaporation…

Q: The ordinates of the direct runoff hydrograph (D.R.O) resulting from a complex storm are shown in…

A: UH = DRO/DRD. {here DRD(R) is rainfall depth} R1 = 1.06 cm R2 = 1.93 cm R3 = 1.81 cm

Q: The data for an agricultural field for a specific month are given below: Pan Evaporatiom = 100mm…

A: Given- Pan Evaporation = 100 mm, Effective Rainfall = 20 mm, (after deducting losses due to runoff…

Q: The observed rainfall and discharge of a catchment is given the table. The catchment area is…

Q: 3. For a 2 hour, 8 mm/h intensity rainfall, the hydrograph given in Table is observed. The area of…

A: time (hr)024681012141618202224flow rate(m3/sec)81814304538282418141088The area of watershed = 500…

Q: The following table show the precipitation in (mm/hr.) observed at the rain gages (A, B, and C)…

A: The precipitation happens due to condens of water through a different process and moisture content…

Q: Year Rainfall (mm) Year Rainfall (mm) 1994 28.2 2004 31.5 1995 31.2 2005 42.5 1996 34.4 2006 39.5…

A: year rainfall increasing order 1994 28.2 20.5 1995 31.2 23.6 1996 34.4 25.4 1997 39.0 27.2…

Q: Calculate the rainfall intensity using the formula shown below for a rainfall duration of 13 minutes…

A: Given data Constant values Time duration To find Rainfall Intensity

Q: Q1: The following time distribution of the rainfall, estimate the -Index and W- Index of the…

A: As the value lies between 0.5 and 0.6 the assumption is correct

Q: Consider the catchment area shown in the figure below has three rain gauges as labeled. For the…

A: To find out the mean rainfall using thiessen polygon method from the data given in table.

Concept explainers

Unit Hydrograph

Hydrology is the science which deals with the study of water on the earth’s surface. The word Hydrograph is derived from the word hydro which means water. Hydrograph is basically a graph in which the discharge is plotted against the time interval at a specific point in a river or other channel. In a hydrograph, the discharge is plotted along the y-axis and time interval is plotted along the x-axis. Hydrograph is used to estimate the runoff. The variations in discharges with the change in time is shown by a hydrograph. It was revealed that the total discharge at an outlet increases with time by a kinematic wave model.

Question

The following is the hydrograph resulted from a rainfall intensity of 2 cm/hr for a duration of 2
hours. If the index for the catchment is 0.5 cm/hr, use this information to develop the 2h.UH
The Hydrograph
Time (hours)
Q (m³/s)
0
10
1
40
2
28
3
22
4
16
5
10

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Introduce the problem statement

VIEW

Step 2: Determine the excess rainfall

VIEW

Step 3: Determine the runoff due to excess rainfall

VIEW

Step 4: Develop the 2-hour unit hydrograph

VIEW

Solution

VIEW

Step by step

Solved in 5 steps with 5 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

The annual peak flow data were recorded between 1980 and 2021 at a particular section of a river. Annual peak flows have been transformed into log values and the following statistics are obtained. Mean of log transformed peak annual flows = 3.525 Standard deviation of log transformed peak annual flows = 0.178 Skewness of log transformed peak annual flows = -0.235 a. Estimate the 2% AEP peak discharge by assuming that the annual peak flow data follows Log-Pearson type III distribution. b. Estimate the 2% AEP peak discharge by assuming the peak flow data are lognormally distributed. c. Compare the peak discharge obtained from two methods (l.e. Log-Pearson type III distribution and Lognormal distribution).
Using the total direct runoff hydrograph given, derive a 2 hour unit hydrograph for the 2,850 acre drainage area. The rainfall duration was 2 hours and the total precipitation was 6 inches.
Calculate phy-index
2-A 3 hours storm produces a flood hydrograph as: t (hr) Q (m³/s) 0 3 4 9 6 12 9 18 12 15 18 21 24 27 20 16 20 10 8 6 Determine 3 hr-UH, if the catchment area is 50 km². 3- Find the flood hydrograph of 3 hrs storm (use the UH of Q2). Total precipitation is 14.5 cm and 9-index is 1cm/hr. 30 4
Flow rate in a stream discharging water shed runoff is 50 cubic meters per second after five days without rain. The flow rate in the stream reaches half that amount after 20 days without rain. Determine the equation of basal flow hydrograph. Find the amount of flow rate after a period of six months in the watercourse.
5. From the 1mm 6 hour unity hydrograph given below, derive the 2 hour unit hydrograph. Time 12 18 24 30 (hrs) UH 15 8 3.6 0.6 0.0 (cumecs) What would be the peak surface runoff resulting from 3mm of rainfall falling in the space of two hours?
Q2/ The ordinates of a 3-hour UH are given in the following table: Time 3 9 12 15 18 21 24 27 30 (hour) 10 30 80 60 50 40 30 10 hour UH (m³ls) (a) Estimate the area of the basin. (b) Determine the DRH ordinates due to two ER of 2 cm and 3 cm occurring in two successive 3-hour durations each. (c) Estimate the flood hydrograph ordinates if the base flow at time 0 h is 10 m³/s and increase to reach 20 m'/s at time of 30h. (d) Estimate the total runoff volume
In reference to the Table below: Day 1 2 3 4 6 7 Rainfall, mm 11 8 13 9 11 Water added, -5 -3 0 0 7 4 3 mm Determine the water lost from the lake in ha-m, if the pan coefficient is 0.7 and the area of the lake is 430 ha. 19.0 None of the choices 16.5 23.4 23.8
QI. (a) Describe the Rational' method of designing surface water drainage systems. Define fully any terms used in the description. Discuss the assumptions made in applying the rational method, and comment upon the procedure used to predict the peak flow for a given return period. (b) At the beginning of the month of June, water level of a reservoir with surface area of 7km? was at 20m (Refer to reservoir characteristic curve in Figure Qla). Average longterm monthly rainfall for the month of June recorded at five raingages is summarized in Table Q1 (assuming the same average amount of rainfall is also recorded in the reservoir). The inflow to the reservoir X, located at the downstream catchment outfall, resulted from that rainfall can be estimated as Qin = 0.65PA where P is mean areal rainfall (to be estimated by Thiessen Polygon) from a 36km? catchment area A, schematically shown in Figure lb. An average monthly withdrawal of 6MCM from the reservoir is required for water supply…
Show full solution.According to rainfall data collected by a laboratory during storm events, the precipitation level in inches (X) varies jointly with runoff in cubic feet per second (Y). The joint probability mass function (PMF) of both variables are given by the following Table: Y 1 2 3 10 0.05 0.15 0 20 0.1 0.25 0.25 30 0 0.1 0.1 a. Determine and plot the marginal PMF of runoff.b. Determine the correlation coefficient between X and Y.