The flood data and base flow in a storm are estimated for a storm in a catchment area of 600 km2. Estimate the rainfall excess.

Q: One hour triangular unit hydrograph of a watershed has the peak discharge of 60 m^3/sec. cm at 10…

A: Dear student,  Please find the answer in the below attachments  Thank you

Q: Problem III: A gutter is designed to drain the 25-year 30-min storm runoff from a small drainage…

A:

Q: Problem 1. The following are the ordinates of the hydrograph flow from a catchment area of 770 km2…

A:

Q: A small urbanized area having smooth bare packed soil is to be drained by means of storm sewer…

A: Note-  Since we only answer up to 3 sub-parts, we’ll answer the first3. Please resubmit the question…

Q: Annual flood data of a river covering a long period yielded for the annual flood discharges a mean…

A: Given:-mean flood discharge x=29600 m3/sstandard deviation σ=14860 m3/sRisk=12%=0.12Expected life=60…

Q: The following table lists a streamflow hydrograph with a time interval of 10 minutes from a…

A: Solution Data given in question Time step (10 min) Discharge (m3/s) 1 1.85 2 1.73 3 5.48…

Q: the rainfall depths for a storm at the five stations are 45 mm, 68 mm, 37 mm, 55 mm and 62 mm,

A:

Q: A watershed of (30 ) km? was subjected to a storm of 2-h duration from which the following…

A: Area of Watershed = 30 km2 Duration = 2h

Q: A river catchment has a 2 hour unit hydrograph with the ordinates 0, 3, 11, 35, 55, 66, 63, 40, 22,…

A: Time(hr)ordinates of 2hr UH(m3/s)2*U(m3/s)(I)105*U regarding 2hr(II)Ordinates of DCH(III)rate…

Q: a) Table shows total rainfall for each month of the year 2012 for a 200 m? sub- basin located…

A: Given data: Area of sub-basin = 200 m2 Runoff generated = 70% Evaporation = 2 mm/day

Q: catchment area of 100 Sq. Km. in Gilgit received a rainfall of 1 mm from a 3-hours storm. At the…

A: Given: Catchment area=100sq.km Rainfall=12cm Before storm flow Q=10m^3/s For 20 hours after rainfall…

Q: A catchment with an area A = 85 km^2, has four rainfall gauges (P1 – P4) according to the figure.…

A: Given data: A=85 KM2

Q: A catchment area of 100 Sq. Km. in Gilgit received a rainfall of 12 cm from a 3-hours storm. At the…

A: Given data: Catchment area=100 Km2Rainfall =12 cmQbefore storm=10 m3sQavg=90 m3s The total volume of…

Q: The normal annual rainfall at stations A, B, C and D in a catchment is 82 mm, 92 mm, 86 mm and 88 mm…

A:

Q: Annual maximum streamflow at a gage follows a log-normal distribution with a mean of 7000 m3 s-1 and…

A: Mean, μ = 7000Variance, σ2 = 1.44×107Standard Deviation, σ = 1.44×107 = 120010 P[X>1100] =…

Q: Using arithmetic mean method, find the average rainfall over a catchment. The rain gauge data is:…

A:

Q: A residential area located near the Neebing River in Thunder Bay used to be flooded in 5 of the 20…

A:

Q: An effective rainfall of 2-hour duration produced a flood hydrograph peak of 200 m³/s. The flood…

A:

Q: A catchment area of 65 Sq. Km. in Gilgit received a rainfall of 12 cm from a 3-hours storm. At the…

A: The catchment area is A=65 km2. Rainfall is 12 cm. The natural streamflow is 10 cumecs. The average…

Q: An effective rainfall of 2-hour duration produced a flood hydrograph peak of 3 200 m³/s. The flood…

A: given- peak of flood hydrograph=200 m3/sbase flow=20  m3/sExcess rainfall=2 cmϕ=0.4 cm/h

Q: Seven hour storm produced the following rainfall intensities (in mm/hr) at half an hour intervals…

A: Given, Area of basin= 1830km² Runoff = 36.6million m³  7hrs storm,

Q: A 20-minute rainfall event occurred at a small catchment (without any base flow), which has 2 branch…

A:

Q: Example 2: Two storms each of 6-h duration and having rainfall excess values of 3.0 and 2.0 cm…

A:

Q: Time distribution of a rainfall- for situation 2 Time, h Cumulative Rainfall, cm O to 1 0.7 1 to 4…

A:

Q: 1. The following is a rainfall record of each 5-minute interval measured during a storm: time (min)…

A:

Q: A Six-hour storm produced the following rainfall intensities at one-hour intervals over a basin of…

A:

Q: It is proposed to design a causeway along a village road. The return period for the annual maximum…

A:

Q: Table below gives the time distribution of a rainfall lasting for nine hours. If the direct runoff…

A: given - time distribution of rainfall       to find - phi-index

Q: Estimate the net rainfall in cm using SCS method. If a 20 cm storm occurred for 4 hours in a…

A: According to SCS-CN method  CN=50 S= (1000/50)-10= 10 Rainfall = 20 cm= 200 mm= 7.87402 in Q=…

Q: Which gauge gives the plot of accumulated rainfall? A Tipping bucket type B Weighing bucket type c)…

A: Option B is correct  Weighing bucket type  Weighing bucket type rainfall gives plot of accumulated…

Q: storm occurred in two similar watersheds, A and B, both having an area of 700 hectares. A is long…

A: Watershed area and peak discharge. The value of peak discharge is greatly dependent upon the shape…

Q: The rainfall on five successive days on a catchment was 2, 6, 9, 5 and 3 cm. If the -inde: for the…

A:

Q: The rainfall on five successive days on a catchment was 2, 6, 9, 5 and 3 cm. If the o-index for the…

A:

Q: Given the Time and Cumulative Rainfall, Plot the Mass-Curve Diagram and Hyetograph

A: Time Cumulative Rainfall (mm) Incremental Rainfall (mm) Rainfall Intensity (mm/hr) 07:00 0.0 0.0…

Q: Example 5. (a) The peak of flood hydrograph due to a 3-h duration isolated storm in a catchment is…

A: The duration of rainfall=3 h loss at 0.3 cm/hr for 3 hr=0.9 cm Total depth of rainfall=5.9 cm…

Q: essive three hourly ordinates of a 6 hr. UG for a particular basin are 0, 15, 36, 30, 17.5, 8.5, 3.0…

A: Depth of storm = effective depth + loss*t  Loss = 6mm/hr  Total loss = .6*6= 3.6 cm

Q: A 6 hour storm with intensities of 5, 7, 12, 20, 16 and 2 mm/hr produced a runoff of 30 mm. Then phi…

A: Given data, Runoff = 30mm 6 hr storm, Intensity = 5,7,12,20,16and 2mm/hr

Q: 3.50. Annual floods for a stream have a normal frequency distribution. The 2-year flood is 40,000…

A: Floods are among Earth's generally normal and most disastrous regular dangers. A flood happens when…

Q: A storm had three successive 6-h intervals of rainfall magnitude of 3.0, 5.0 and 4.0 cm,…

A: Determine the effective rainfall at all given magnitude 3.0 cm, 5.0 cm and 4.0 cm hydrograph of flow…

Q: The rainfall on five successive days on a catchment was 2, 6, 9, 5 and 3 cm. If the p-index for the…

A:

Q: t has a 2-hour unit hydrograph with the ordinates 0, 3, 11, 35, 55, 66, 63, 40, 22, 9 and 2 m3/s.…

A: Given:- 2 hour unit hydrograph Ordinates=0, 3, 11, 35, 55, 66, 63, 40, 22, 9 and 2 m3/s t=0 hours is…

Q: The design storm for a basin has the depth of rainfall for successive hours as 5.6, 7.6 and 5.2 cm.…

A:

Q: A small urban watershed located in north of Iraq has four rainfall gauges as located in the figure…

A: The given data is shown below:

Q: Question 1 Plot the hyetograph of 20 min for this storm event over a specified watershed using the…

A:

Q: lestion Plot the hyetograph of 20 min for this storm event over a specified watershed using the…

A:

Q: The incremental rainfall intensity data given in the table below were recorded at a gage located on…

A:

Q: Using the total storm rainfall depths given, determine the average rainfall over the watershed using…

A: To Find :- Average rainfall over the watershed by arithmetic mean method Given data, Gauge…

Q: A rainfall with an exceedance probability of 0.025 a) will occur on the average once every 40…

A: Given: The exceedance probability of the rainfall, p = 0.025 Now, The return period is given as,T=1p…

Q: A 20-minute rainfall event occurred at a small catchment (without any base flow), which has 2 branch…

A:

Q: A rainfall of 100+R mm is received on a catchment of 100 km? in a certain day from 8am to 1lam due…

A:

Concepts of Flood Control

Flooding is a temporary overflow of water that submerges or covers the the usually dry land. It can also be defined as the overflow of the excess amount of water that covers a huge area of land which is normally dry.