9:183.00KB/SGElווויABEN_4422_LWCE_PSO1_questi...ABEN–1422– Land and Water Conservation EngineeringABEN 4422 – Land and Water Conservation EngineeringProblem Set No. 12.4. Compute the average rainfall for a given watershed by the Thiessen method from thefollowing data. How do weighted average and the station average compare?Rain GageArea, ha (ac)14.0 (34.60)4.5 (11.20)5.3 (13.20)4.9 (12.1)Rainfall, mm (in.)58 (2.30)41 (1.60)51 (2.02)43 (1.71)AC2.6. From the rainfall data presented on the table below, (a) calculate and plot the besttheoretical probability curve for the return periods of 2, 5, 20, and 100 years; (b) For 90%chance of occurrence is the period adequate?AugustTotal (mm)No.YearMean (mm)11989451.414.61990462.814.931991578.418.741992505.316.351993396.712.81994261.18.471995304.99.881996257.68.391997334.410.8101998265.48.6111999547.517.7122000405.513.1132001314.210.1142002297.19.6152003448.714.5162004621.620.1172005269.68.7182006390.212.6192007369.511.9202008330.710.7212009530.417.1222010307.19.9232011360.311.6242012552.317.8252013593.719.2Problem Set No.1 | 1ABEN_4422 – Land and Water Conservation Engineering2.7. Plot the data in Problem 2.6 using the ASCE empirical equation for plotting positi2.8. If the average rainfall intensity for 50 years of records is 50 mm/h (2.0 iph)duration of 60 min and the coefficient of variation of the data is 0.324. Contheoretical rainfall intensities for a return periods of 2, 5, 20, and 100 years. Assume that

As per the guidelines from bartleby we are have to give only one answer at a time.

. Compute the average rainfall for a given watershed by the Thiessen method from the following data. How do weighted average and the station average compare? Rain Gage Area, ha (ac) 14.0 (34.60) 4.5 (11.20) 5.3 (13.20) 4.9 (12.1) Rainfall, mm (in.) 58 (2.30) 41 (1.60) 51 (2.02) 43 (1.71) A C

. Compute the average rainfall for a given watershed by the Thiessen method from the following data. How do weighted average and the station average compare? Rain Gage Area, ha (ac) 14.0 (34.60) 4.5 (11.20) 5.3 (13.20) 4.9 (12.1) Rainfall, mm (in.) 58 (2.30) 41 (1.60) 51 (2.02) 43 (1.71) A C

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Probability, risk and uncertainty analysis for hydrological design

It gives a framework that is financially critical for finding the exceptional designs of hydrological systems with a reduced cost in total inclusive of the project cost and the disaster mitigation cost. But there would be hardly any assessment of a decent quality damage function. Hence, errors in demonstrating the hydrologic events, incorrect model parameters, and so on may occur. Here, we will discuss a specific hydrological design that of a detention basin for studying and understanding the risk-based procedure, uncertainties, and probability analysis by following a systematic framework.

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ABEN_4422_LWCE_PSO1_questi...
ABEN–1422– Land and Water Conservation Engineering
ABEN 4422 – Land and Water Conservation Engineering
Problem Set No. 1
2.4. Compute the average rainfall for a given watershed by the Thiessen method from the
following data. How do weighted average and the station average compare?
Rain Gage
Area, ha (ac)
14.0 (34.60)
4.5 (11.20)
5.3 (13.20)
4.9 (12.1)
Rainfall, mm (in.)
58 (2.30)
41 (1.60)
51 (2.02)
43 (1.71)
A
C
2.6. From the rainfall data presented on the table below, (a) calculate and plot the best
theoretical probability curve for the return periods of 2, 5, 20, and 100 years; (b) For 90%
chance of occurrence is the period adequate?
August
Total (mm)
No.
Year
Mean (mm)
1
1989
451.4
14.6
1990
462.8
14.9
3
1991
578.4
18.7
4
1992
505.3
16.3
5
1993
396.7
12.8
1994
261.1
8.4
7
1995
304.9
9.8
8
1996
257.6
8.3
9
1997
334.4
10.8
10
1998
265.4
8.6
11
1999
547.5
17.7
12
2000
405.5
13.1
13
2001
314.2
10.1
14
2002
297.1
9.6
15
2003
448.7
14.5
16
2004
621.6
20.1
17
2005
269.6
8.7
18
2006
390.2
12.6
19
2007
369.5
11.9
20
2008
330.7
10.7
21
2009
530.4
17.1
22
2010
307.1
9.9
23
2011
360.3
11.6
24
2012
552.3
17.8
25
2013
593.7
19.2
Problem Set No.1 | 1
ABEN_4422 – Land and Water Conservation Engineering
2.7. Plot the data in Problem 2.6 using the ASCE empirical equation for plotting positi
2.8. If the average rainfall intensity for 50 years of records is 50 mm/h (2.0 iph)
duration of 60 min and the coefficient of variation of the data is 0.324. Con
theoretical rainfall intensities for a return periods of 2, 5, 20, and 100 years. Assume that

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