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: Q.5. Floods in a stream have the mean 600 m3 /s and the standard deviation 400 m3 /s. Please answer…

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

Q: Um an 8-hr storm over a catchment area of 4000 km is given in the table below. Derive and plot the…

A: The hydrograph data is given as above. We have to derive and plot the unit hydrograph for the given…

Q: The depth-duration relationship for a 25-year return period on the site is given below: Duration (m)…

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: Determine the annual average evaporation for the whole catchment, in mm assuming that there is no…

A: Use of weight average method to find the annual average Evaporation. Useful data from given data…

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

Q: Draw the hytograph Draw the standard percolation curve (Hor

Q: In reference to the Table below: 1 3. 4 Day 11 8 13 5. 9. 11 Rainfall, mm 7 4 3 Water added, mm -5…

A: Given data- Area of lake(A) = 540ha Pan Coefficient (Cp) = 0.7

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 2 4 5 7 Rainfall, mm 8 13 5 11 11 Water added, -5 -3 7 4 3 mm…

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 average rainfall values over a catchment in three successive 2-hour intervals are 3, 5 and 2 cm,…

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: 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: 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 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: Calculate the peak flow rate generated

A: HYDROLOGY: Option a

Q: Q1: Find the average precipitation on the watershed area ,using : 1- Arithmetic method. 2- Thiessen…

A: We have to find Average precipitation on watershed area By using Arithmetic method and Thiessen…

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: (a) For a given year, a catchment with an area of 3000 km? received 160 cm of precipitation. The…

Q: 3cm of net rain fell on a catchment during a one hour storm. The resulting total flow in the river…

A: Given values: 1 hour storm net rainfall = 3 cm Base-flow = 3 m3/s From the given values of time and…

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: A small drainage basin has an area of 8.7 km² and received 640 mm of precipitation in a given year.…

Q: Q2. Given that CN=65, Determine the effective runoff. Time (hr) Rainfall (mm) 0.5 15 1 25 1.5 15

A: Runoff happens when the water level is very low than the earth's surface can absorb. Effective…

Q: Recorded flow data from a 7 sq. km. catchment due to a 1 hour rainfall event is given in Table 2.…

A: The unit hydrograph (UH) is a direct run off hydrograph (DRH) resulting from unit depth of excess…

Q: rect runoff of 8 cm. The time distribution of the storm A storm with 14 cm preciplta s as shown in…

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

hydrology flood estimation and control
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?
The 60-year record shows that the annual maximum discharges for a river have a mean of 30,000 cfs, a standard deviation of 28,000 cfs, and a skewness coefficient of 3.15. If the annual maximum discharge can be described by the Extreme-value Type I distribution, what is the probability that the annual maximum discharge exceeds 100,000 cfs at least once in next 10 years? (Note: The sample size is 60. Conduct interpolation using exceedance probabilities or cumulative probabilities.)
Hydrology: i need the answer quickly i need all the steps, i need the answer in Handwritten.
C PART ONLY
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
A catchment is idealized as a 25 km × 25 km square. It has five rain gauges, one at each corner and one at the centre, as shown in the figure. G₂ G₁ O G5 GA G3 During a month the precipitation at these gauges is measured as G₁ = 300 mm. G₂ = 285 mm, G₂ = 272 mm, G₂ = 290 mm and G5 = 288 mm. The average precipitation (in mm up to one decimal place) over the catchment during this month by using the Thiessen polygon method is
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
A drainage basin has a area of 7322 km2. The average annual precipitation for this area is 909 mm. The average surface water flow at the outlet of the catchment is 21.4 x 108 m3/year and the average groundwater flow out of the basin is 94.6 mm/year. Assume trailing zeros are significant if present. Determine the annual average evaporation in mm/year. (give your answer to one decimal place)
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…