Question

Given a unit hydrograph (UH_{1}) of a basin, determine
UH_{2} and UH_{3} using Lagging method

Time (hr) |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |

UH1 (m |
0 |
22 |
28 |
34 |
36 |
26 |
18 |
0 |

Answer #1

Given below is a 2 – hour unit hydrograph.
Derive 4 – hour unit hydrograph by lagging method.
Derive 1 – hour unit hydrograph by S curve method
Time hr
Discharge m3/s (2 hr UH)
0
0
2
28
4
88
6
168
8
218
10
158
12
98
14
48
16
0

The ordinates of a 4-hour unit hydrograph for a particular
basin are given below. Derive the ordinates of
The S-curve hydrograph, and
The 2-hour unit hydrograph, and plot them,
Note: Area of the basin is 630
km2.
Time, hr
Discharge, cumsec
0
0
2
25
4
100
6
160
8
190
10
170
12
110
14
70
16
30
18
20
20
6
22
1.5
24
0

After using the convolution method, the peak flow value from a
4-hr duration unit hydrograph is four (4) times bigger than the
peak flow of the original 1-hr duration unit hydrograph event. True
or False? Explain.

the ordinates of a 6-h unit hydrograph for a particular
catchment are 0,10,30,50,40,30,20,10 and 0 m3/s (values at 3 hourly
intervals). the effective rainfall depth of a particular storm was
28 mm. assume a constant base flow of 3 m3/s. what is the
streamflow at the end of the third time interval?

The results of a sample of 372 subscribers
toWiredmagazine shows the time spent using the Internet
during the week. Previous surveys have revealed that the population
standard deviation is 10.95 hours. The sample data can be found in
the Excel test data file.
What is the probability that another sample of 372 subscribers
spends less than 19.00 hours per week using the Internet?
Develop a 95% confidence interval for the population mean
If the editors of Wiredwanted to have the...

For a given basin, the following are the infiltration capacity
rates at various time intervals after the beginning of the
storm.
Make a plot of the f-curve and establish an equation of the form
developed by Horton for infiltration curve.
Also determine the total rain and the excess rain
(runoff).
Time (mints)
1
2
3
4
5
6
8
10
12
14
16
18
20
22
Precipitation (cm/hr)
5.5
5.6
5.6
5.8
7.0
9.0
8.5
8.0
7.0
8.0
3.5
3.0...

____________________________________________
The results of a sample of 372 subscribers to Wired
magazine shows the time spent using the Internet during the week.
Previous surveys have revealed that the population standard
deviation is 10.95 hours. The sample data can be found in the Excel
test data file.
What is the probability that another sample of 372 subscribers
spends less than 19.00 hours per week using the Internet?
____________________________________________
Develop a 95% confidence interval for the population mean
____________________________________________
If the editors...

to look at 36 weeks instead of 20 weeks. His quality improvement
team provided him with the data below after an “intervention” was
introduced in week 20. Calculate the upper and lower control limits
and then construct a control chart. Display your chart.
Question: Using the rules for detecting special
causes, can you detect any special causes in this case? If so, what
special causes can you detect? What does this mean? Was the
intervention successful in reducing the delays?...

Choose either column D or E of the attached data set and analyze
using the techniques discussed in class up to this point. This
includes the following:
Find the appropriate measure of center. Discuss why the chosen
measure is most appropriate. Why did you decide against other
possible measures of center?
Find the appropriate measure of variation. The measure of
variation chosen here should match the measure of center chosen in
Part 1.
Find the graph(s) needed to appropriately describe...

A colleague of the investigators in problem 6 repeats the
experiment but matches the samples on the dimensions of sex and job
type. Evaluate her experiment. . The obtained statistic: 6.06
Pairs: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Contr: 38 40 35 36 35 32 31 30 28 26 24 21 18 34 22
Relax: 35 32 30 34 30 32 28 27 22 22 18 17 17 25 21
What...

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