Time (hours) Rainfall (mm) 9 19 Losses (mm) 11 7 measured discharges at the catchment outfall are shown below: Time (hours) Inflow (m³/s) 0-1 1-2 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 1.2 3.5 7.6 15 9.9 7.4 5.4 3.8 2.7 2.0 1.2 ere is a constant baseflow of 1.2 (m³/s), calculate the corresponding unit rograph and its duration.

Time (hours) Rainfall (mm) 9 19 Losses (mm) 11 7 measured discharges at the catchment outfall are shown below: Time (hours) Inflow (m³/s) 0-1 1-2 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 1.2 3.5 7.6 15 9.9 7.4 5.4 3.8 2.7 2.0 1.2 ere is a constant baseflow of 1.2 (m³/s), calculate the corresponding unit rograph and its duration.

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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Q2/A storm is proposed to drain a 16 hectares drainage area shown in the figure (2)below with given data in the table below determine the design discharge needed to convey 5-year 2500 peak discharge when i= t+20 Site Area Inlet t B A 6 10 A(residential) B(roofs) 30 11 =15min 10
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10-min unit hydrograph for a catchment is given in Table 1 below. Table 1: 10-min Unit Hydrograph Time (min) 05 10 15 20 25 30 35 40 45 50 1.75 1.95 2.0 1.8 1.25 0.6 Flow (m³/s) 0 0.5 1.0 1.4 0 a. What is the area of the catchment? b. Construct a storm hydrograph resulting from the 40-min rainfall event. The rainfall excess depths are provided in Table 2. Determine the peak discharge resulting from this 40-min rainfall event. Table 2: Rainfall Excess Depths Rainfall Excess (mm) Time (min) 0-20 4 20-40 6
The mass curve of rainfall of duration 100 minutes is given below. If the catchment had an initial loss of 0.6 cm and a 0-index of 0.6 cm/h, then the total surface runoff from the catchment is (Round off to one decimal place.) cm. --- - Time from start of rainfall (min) 0 20 40 60 80 100 Cumulative rainfall (cm) 0 0.5 1.2 2.6 | 3.3 3.5
Example-1 A 4-hour storm occurs over an 80 km² watershed. The details of the catchment are as follows. Sub Area (km²) 15 25 35 5 Index (mm/hour) 10 15 21 16 1st hour 16 16 12 15 Hourly Rain (mm) 2nd hour 48 42 40 42 3rd hour 22 20 18 18 4th hour 10 Calculate the runoff from the catchment and the hourly distribution of the effective rainfall for the whole catchment.
Derive and plot 3-hour Unit hydrograph for a stream which drains an area of around (401) km2. Time-discharge data of the storm is given is in Table. Assume the base flow as 2 m3 /sec. Time (Hrs.) 0 3 Flow (m³/s) 2 6 6 9 11 13 12 15 18 21 10 8 6 4 24 2
Read the question carefully and give me right solution according to the question
a. Derive a 2-hour Unit Hydrograph for a Watershed Area of 2600 acres. The total 2 hour rainfall was 6.0 in. b. Using the 2 hour unit hydrograph derived in part a, determine a 4-Hour Unit Hydrograph given the following four hour rain
x = 3
1. The 1-hr unit hydrograph for a watershed is given below. Determine the runoff for the third time interval from this watershed for the storm pattern given. The abstractions have a constant rate of 0.3 in/h. Time (hr) Precipitation (in) Unit hydrograph (cfs) 1 2 | 3 4 5 0.5 1.0 1.5 0.5 10 100 200 150 100 50
Ron vel. CP= Precip Vol Department of Civil Engineering Engineering Hydrology - CCB 433 Tutorial No.2 October 2022 In a given year, a catchment with an area of 2500 km² received 1.3 m of precipitation. The average rate of flow measured in a river draining the catchment was 30 m³s¹. 24xboxbox 3012х12х30=2 ³)? > (ii) What is the runoff coefficient? (iii) How much water is lost due to the combined effects of evaporation, transpiration, and 11x2500 × 106 = infiltration? (Expressed in m). P-R- [1₂ +ET] =AS