A catchment of area 1040 km² is divided into 9-hourly divisions by isochrones (lines of equal travel time) in the figure. The catchment is divided into sub-areas such that all surface runoff from each of these areas will arrive during a 1-hr period at the gauging point. The hourly areas are as follows: Hour 1 2 3 4 5 6. 7 8 Area (km?) 9 40 100 150 180 160

A catchment of area 1040 km² is divided into 9-hourly divisions by isochrones (lines of equal travel time) in the figure. The catchment is divided into sub-areas such that all surface runoff from each of these areas will arrive during a 1-hr period at the gauging point. The hourly areas are as follows: Hour 1 2 3 4 5 6. 7 8 Area (km?) 9 40 100 150 180 160

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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21.
WATER RESOURCES ENGINEERING A 6-hour storm event occured in the study basin. You were able to measure precipitiation and infiltration data, but not streamflow. Using the precipitation and and infiltration data and the unit hydrograph, estimate the total streamflow during and after this storm event. Calculate stream flow for each time step until the total streamflow is equal to the baseflow of 35 m3/s. Please refer to attached images of data tables:
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?
A watershed of (30+X) km2 was subjected to a storm of 2-h duration from which the following information are recorded in Table a) Obtain a Unit Hydrograph for this watershed knowing that the base flow in the stream is estimated at 2 m3/s. b) Derive and plot 6-h Unit Hydrograph for the catchment area. Time (hours) 0 12345678 Discharge (m3/s) 2 15 30 37 30 22 16 12 2
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hydrology engineering
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Problem 3. Given below are the daily mean flows in cubic meter per second at a gaging station for a period of 5 days. What is the mean flow rate for the period of cubic meters per second? What is the total discharge during the period in cubic meters? If the drainage area is 1958 km', what is the runoff volume in millimeters? Day 1 | 2 | 3 4 | 5 Flow, m'/s 19.8 135.9 87.8 57.2 37.1 Problem 4. Using the data of prob. 4-3, and relationship of Fig. 4-16, estimates the peak flow
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Q1. Find linear relation between Discharge (Y cumec) and Stage (x m) of for the below hydrologic data: X Y X Y X Y X Y 18 905.7 19 1004.66 1 12.86 19 1004.66 17 811.9 12 420.3 19 1004.66 88.78 12 420.3 3 40.5 8 199.9 723.26 5 88.78 17 811.9 3 40.5 639.78 4 62.06 6 120.66 7 157.7 199.9 5 88.78 13 488.3 10 299.78 1 12.86 488.3 5 88.78 12 420.3 14 561.46 811.9 12 420.3 17 811.9 14 561.46 157.7 3 40.5 3 40.5 10 299.78 88.78 811.9 6 120.66 1 12.86 1108.78 6 120.66 10 299.78 1108.78 157.7 905.7 16 723.26 561.46 12.86 3 40.5 62.06 1004.66 9 247.26 88.78 639.78 488.3 639.78 120.66 811.9 12 420.3 357.46 7 157.7 13 17 7 5 20 18 1 19 17 11 1215256 17 20 7 13 LASZO 14 4 5 16 15 8 5 17 811.9 157.7 7
%VY . Q1: A catchment area is 5 square miles and the total direct Runoff (E D. R = 11150 ft / sec). Estimate the base flow for the data shown in the table below? Time 2 3 4 5. 6. 500 500 1200 2250 2920 2670 2060 1430 Total Flow(ft/sec) 202.57 | 506.43 700.32 627.97 451.44 269.13 11 U.H 10 1100 910 Time 9 12 13 14 15 16 Total 780 650 530 510 510 500 Flow(ft'/sec) U.H 173.6 118.65 81.03 52.09 28.94 11.57 2.89 Q2: Develop a 3-hr synthetic unit hydrograph for the catchment are using Snyder's method only. If the catchment area is 400 kan?, L= 25 kam and La km, assuming C15 and C,-0.7 •,.0 |||||||||||||1||||||| إلغاء إعادة تعي ين