Assignment 1 Report

Assignment 1 Report

by B3ln4iNmum

Assignment 1 Report

AssignmentTutorOnline

Due date:       26 August 2016

Weighting:      25% (250 marks)

1.        Student Details

Student name:        SEONMI LEE
Student number: 0061080689

2.        Spreadsheet Details

Provide a list of sheets in the spreadsheet and their contents.

그림 목차 항목을 찾을 수 없습니다.

3.        Streamflow Data

BASIC STREAMGAUGE DATA

  • Provide a table of the basic gauge information                                                    5 marks

표 1 Basic gauge information

Location Latitude 28°13’44.0″S
Longitude 152°13’38.0″E
Catchment area 　 148 sq. km
Commence streamgauging 　 01/10/1972
Commencerainfall measurements 　 10/04/1990
Maximum instantaneous discharge  Value 689.261 (cumecs)
59552.2  (ML/day)
Date 28/01/2013
Maximum daily total rainfall Value 190 (mm)
Date 19/12/2014
  • Provide a photograph of the control weir                                                            5 marks

그림 1, The photograph of the control weir of Emu creek

  • Provide an image showing the creek cross section at the streamgauge                  5 marks

그림 2. The emu creek cross section

  • Provide an image of the rating curve and answer the gauging questions.               5 marks
  • Make a comment of the adequacy of the rating curve based on this information.   5 marks

    The water level are red at the streamgauge. To get the level of discharge, rating curve convert water level to discharge. 

MISSING DATA

  • Provide a monthly discharge timeseries plot and state the % of missing data        10 marks

그림 3. The monthly discharge of emu creek from 1972 to 2015

The % of missing data

The no. of missing data :  3

The no. of reading data : 513

4.        Annual Series Flood Frequency Analysis

ANNUAL SERIES ANALYSIS                                                                             

  • Provide a table of the water years in chronological order with the peak discharge for each year and the number of months of missing data for each year. Highlight the water years when the amount of missing data is unacceptable.                                                               10 marks

표 2 The rank, peak discharge and highlighted missing data of emu creek

Mont/Year Water Year The peak discharge The no. of missing
data for each year
　 　 Q (m3/s) 　
10/1973 -1973 29.772 1
10/1974 1973-1974 237.996 1
10/1975 1974-1975 74.861 1
10/1976 1975-1976 341.575 0
10/1977 1976-1977 13.398 0
10/1978 1977-1978 3.791 0
10/1979 1978-1979 36.861 0
10/1980 1979-1980 21.277 0
10/1981 1980-1981 9.954 0
10/1982 1981-1982 106.15 0
10/1983 1982-1983 206.306 0
10/1984 1983-1984 33.951 0
10/1985 1984-1985 25.812 0
10/1986 1985-1986 0.283 0
10/1987 1986-1987 21.061 0
10/1988 1987-1988 116.378 0
10/1989 1988-1989 50.39 0
10/1990 1989-1990 67.069 0
10/1991 1990-1991 11.158 0
10/1992 1991-1992 0.613 0
10/1993 1992-1993 3.517 0
10/1994 1993-1994 1.091 0
10/1995 1994-1995 528.285 0
10/1996 1995-1996 19.426 0
10/1997 1996-1997 34.65 0
10/1998 1997-1998 94.511 0
10/1999 1998-1999 37.383 0
10/2000 1999-2000 168.348 0
10/2001 2000-2001 7.764 0
10/2002 2001-2002 1.478 0
10/2003 2002-2003 49.894 0
10/2004 2003-2004 24.064 0
10/2005 2004-2005 11.256 0
10/2006 2005-2006 0.084 0
10/2007 2006-2007 367.881 0
10/2008 2007-2008 11.268 0
10/2009 2008-2009 111.956 0
10/2010 2009-2010 601.595 0
10/2011 2010-2011 39.499 0
10/2012 2011-2012 689.052 0
10/2013 2012-2013 130.291 0
10/2014 2013-2014 58.743 0
* : water year data missed
  • Table the Annual Series discharges, ranked in order. State the number of water years (N) included in the Annual Series, allowing for missing data.                                              10 marks
  • Tabulate the Annual Series statistics (mean and standard deviation of log(discharges) and skew) for both cases of with and without the lowest 9 floods.                         10 marks
  • Provide graphs of the Annual Series, fitted LP3 distribution and 5% & 95% confidence limits for both cases of with and without the lowest 9 floods.                                         20 marks

표 3 The annual series analysis including missing data

Rank Year Q(m3/s) AEP(%) logQ Z
1 2011-2012 689.052 1.4% 2.838251998 2.191218023
2 2009-2010 601.595 3.8% 2.779304218 1.775415031
3 1994-1995 528.285 6.2% 2.72286828 1.541386495
4 2006-2007 367.881 8.5% 2.565707358 1.370226804
5 1975-1976 341.575 10.9% 2.533486077 1.231838339
6 1973-1974 237.996 13.3% 2.376569658 1.113711804
7 1982-1983 206.306 15.6% 2.314511859 1.009372111
8 1999-2000 168.348 18.0% 2.226207961 0.915003918
9 2012-2013 130.291 20.4% 2.114914417 0.828154623
10 1987-1988 116.378 22.7% 2.065870889 0.747144563
11 2008-2009 111.956 25.1% 2.049047373 0.670765909
12 1981-1982 106.15 27.5% 2.025919999 0.598115253
13 1997-1998 94.511 29.9% 1.975482358 0.528494162
14 1974-1975 74.861 32.2% 1.874255624 0.46134687
15 1989-1990 67.069 34.6% 1.826521831 0.396219472
16 2013-2014 58.743 37.0% 1.768956122 0.332732131
17 1988-1989 50.39 39.3% 1.702344358 0.270559488
18 2002-2003 49.894 41.7% 1.698048323 0.20941636
19 2010-2011 39.499 44.1% 1.596586101 0.149046948
20 1998-1999 37.383 46.4% 1.572674151 0.089216374
21 1978-1979 36.861 48.8% 1.566567113 0.029703755
22 1996-1997 34.65 51.2% 1.539703239 -0.029703755
23 1983-1984 33.951 53.6% 1.530852571 -0.089216374
24 -1973 29.772 55.9% 1.47380801 -0.149046948
25 1984-1985 25.812 58.3% 1.411821656 -0.20941636
26 2003-2004 24.064 60.7% 1.381367819 -0.270559488
27 1979-1980 21.277 63.0% 1.327910394 -0.332732131
28 1986-1987 21.061 65.4% 1.323478988 -0.396219472
29 1995-1996 19.426 67.8% 1.288383384 -0.46134687
30 1976-1977 13.398 70.1% 1.127039973 -0.528494162
31 2007-2008 11.268 72.5% 1.051846838 -0.598115253
32 2004-2005 11.256 74.9% 1.051384084 -0.670765909
33 1990-1991 11.158 77.3% 1.047586357 -0.747144563
34 1980-1981 9.954 79.6% 0.997997636 -0.828154623
35 2000-2001 7.764 82.0% 0.890085527 -0.915003918
36 1977-1978 3.791 84.4% 0.578753784 -1.009372111
37 1992-1993 3.517 86.7% 0.546172368 -1.113711804
38 2001-2002 1.478 89.1% 0.169674434 -1.231838339
39 1993-1994 1.091 91.5% 0.037824751 -1.370226804
40 1991-1992 0.613 93.8% -0.212539525 -1.541386495
41 1985-1986 0.283 96.2% -0.548213564 -1.775415031
42 2005-2006 0.084 98.6% -1.075720714 -2.191218023
The No. of water year (N) : 42
           
The Annual Series Statistics 　 　 　
Including missing data M 1.455555097
S 0.881416302
G -0.863788236

표 4 LP3 table including including missing data

Y Z Ky logQy Qy
G=-0.864
99% -2.32635 -2.93258 -1.129268723 0.074255953
95% -1.64485 -1.8516 -0.176475328 0.666077359
90% -1.28155 -1.33789 0.27631704 1.889370109
80% -0.84162 -0.77307 0.774158596 5.945092227
50% 0.00000 0.14208 1.580786725 38.08787344
20% 0.84162 0.85474 2.208936867 161.7844838
10% 1.28155 1.15403 2.472735953 296.9859833
5% 1.64485 1.36632 2.659851819 456.9322585
2% 2.05375 1.57009 2.839458019 690.9681344
1% 2.32635 1.68701 2.942513213 876.0183701
0.5% 2.57583 1.78156 3.025851125 1061.331673
0.2% 2.87816 1.88122 3.113693074 1299.251041

표 5 The Confidence limit (5% and 95%) including missing data

Y Z Delta y log CL5 CL5 log CL95 CL95
G =-0.863
99% -2.32635 4.713841 -0.074645658 0.842081919 -2.183891788 0.006547993
95% -1.64485 2.62178 0.410092963 2.570946047 -0.763043619 0.172566456
90% -1.28155 1.911522 0.703979999 5.058013678 -0.151345919 0.705755191
80% -0.84162 1.427563 1.093545879 12.40354649 0.454771314 2.849517404
50% 0.00000 1.148036 1.837635704 68.80748812 1.323937747 21.08325915
20% 0.84162 0.886809 2.407341783 255.471103 2.010531952 102.4547155
10% 1.28155 0.928893 2.680556281 479.2435545 2.264915625 184.0414408
5% 1.64485 1.237924 2.936811353 864.5922787 2.382892286 241.4861825
2% 2.05375 1.819831 3.24660704 1764.440591 2.432308999 270.5882903
1% 2.32635 2.292091 3.455320505 2853.123067 2.429705922 268.9712875
0.5% 2.57583 2.760706 3.643501195 4400.491586 2.408201055 255.9770647
0.2% 2.87816 3.356676 3.864678932 7322.829669 2.362707215 230.5192588

그림 4 Annual series flood frequency analysis including missing data

표 6 The annual series analysis excluding missing data

Rank Year Q(m3/s) AEP(%) logQ Z
1 2011-2012 689.052 1.8% 2.838251998 2.095297233
2 2009-2010 601.595 4.8% 2.779304218 1.662634892
3 1994-1995 528.285 7.8% 2.72286828 1.416509085
4 2006-2007 367.881 10.8% 2.565707358 1.234900681
5 1975-1976 341.575 13.9% 2.533486077 1.086837948
6 1973-1974 237.996 16.9% 2.376569658 0.959415643
7 1982-1983 206.306 19.9% 2.314511859 0.845932571
8 1999-2000 168.348 22.9% 2.226207961 0.742422609
9 2012-2013 130.291 25.9% 2.114914417 0.646319767
10 1987-1988 116.378 28.9% 2.065870889 0.555850217
11 2008-2009 111.956 31.9% 2.049047373 0.469721204
12 1981-1982 106.15 34.9% 2.025919999 0.386947357
13 1997-1998 94.511 38.0% 1.975482358 0.306746748
14 1974-1975 74.861 41.0% 1.874255624 0.228474847
15 1989-1990 67.069 44.0% 1.826521831 0.151580173
16 2013-2014 58.743 47.0% 1.768956122 0.075572726
17 1988-1989 50.39 50.0% 1.702344358 0
18 2002-2003 49.894 53.0% 1.698048323 -0.075572726
19 2010-2011 39.499 56.0% 1.596586101 -0.151580173
20 1998-1999 37.383 59.0% 1.572674151 -0.228474847
21 1978-1979 36.861 62.0% 1.566567113 -0.306746748
22 1996-1997 34.65 65.1% 1.539703239 -0.386947357
23 1983-1984 33.951 68.1% 1.530852571 -0.469721204
24 -1973 29.772 71.1% 1.47380801 -0.555850217
25 1984-1985 25.812 74.1% 1.411821656 -0.646319767
26 2003-2004 24.064 77.1% 1.381367819 -0.742422609
27 1979-1980 21.277 80.1% 1.327910394 -0.845932571
28 1986-1987 21.061 83.1% 1.323478988 -0.959415643
29 1995-1996 19.426 86.1% 1.288383384 -1.086837948
30 1976-1977 13.398 89.2% 1.127039973 -1.234900681
31 2007-2008 11.268 92.2% 1.051846838 -1.416509085
32 2004-2005 11.256 95.2% 1.051384084 -1.662634892
33 1990-1991 11.158 98.2% 1.047586357 -2.095297233
The No. of water year (N) : 33
The Annual Series Statistics 　 　 　
Including missing data M 1.810584224
S 0.52141241
G 0.409455276

표 7 LP3 table excluding missing data

Y Z Ky logQy Qy
G=0.409
99.0% -2.326347874 -2.02234 0.756111051 5.703100841
95.0% -1.644853627 -1.52103 1.017500306 10.41118841
90.0% -1.281551566 -1.22965 1.169429454 14.77166514
80.0% -0.841621234 -0.85518 1.364682759 23.15702471
50.0% 0 -0.06844 1.774898758 59.55233005
20.0% 0.841621234 0.81528 2.235681333 172.0605605
10.0% 1.281551566 1.31754 2.49756593 314.4603766
5.0% 1.644853627 1.75216 2.724182192 529.8856908
2.0% 2.053748911 2.2655 2.991844038 981.3954459
1.0% 2.326347874 2.62139 3.177409501 1504.559963
0.5% 2.575829304 2.95728 3.352546715 2251.88763
0.2% 2.878161739 3.37689 3.571336577 3726.804202

표 8 Confidence limits excluding missing data

Y Z Delta y log CL5 CL5 log CL95 CL95
G =0.409
99.0% -2.326347874 2.162495 1.07899422 11.9948334 0.433227881 2.711614086
95.0% -1.644853627 1.354978 1.219812723 16.58871414 0.815187888 6.534131771
90.0% -1.281551566 1.131577 1.338385761 21.79644975 1.000473147 10.01090056
80.0% -0.841621234 1.038873 1.519797387 33.09766735 1.209568131 16.20198148
50.0% 0 1.092601 1.93803554 86.70328249 1.611761977 40.90364185
20.0% 0.841621234 1.293173 2.428765616 268.3895588 2.04259705 110.3054702
10.0% 1.281551566 1.628712 2.740749703 550.4903409 2.254382157 179.6313598
5.0% 1.644853627 2.101823 3.038006396 1091.45641 2.410357988 257.2515427
2.0% 2.053748911 2.858581 3.418660144 2622.165769 2.565027933 367.3059242
1.0% 2.326347874 3.492533 3.698881284 4998.978679 2.655937717 452.832634
0.5% 2.575829304 4.161874 3.973958126 9417.987848 2.731135305 538.4375069
0.2% 2.878161739 5.08981 4.331298558 21443.64249 2.811374595 647.7010411

그림 5 Annual series flood frequency analysis excluding missing data

  • Report the design discharge estimates for the specified ARIs for both cases of with and without the lowest 9 floods                                                                          10 marks

The missing years in the data record are given below. These years were missed out of annual series frequency analysis because peak discharge measurement values were missing for some months. So the total number of years taken for this scenario was 76 years.

5.        Partial Series Flood Frequency Analysis

PARTIAL SERIES ANALYSIS

  • State the number of floods (K) included in Partial Series and the corresponding discharge threshold.                                                                                                         5 marks

The no. of month =513
N= 513/12 = 42.75
K = 43
  • Table the Partial Series discharges, ranked in order. Show the rank, the month and the peak discharge.                                                                                                      10 marks

표 9 The partial series discharge, rank and ARI of emu creek

Rank date Discharge (m3/s) ARI(yrs) logARI
1 01/2013 689.052 71.58333 1.85481
2 01/2011 601.595 26.84375 1.42884
3 05/1996 528.285 16.51923 1.21799
4 12/2010 497.63 11.93056 1.07666
5 01/2008 367.881 9.33696 0.97021
6 02/1976 341.575 7.66964 0.88478
7 01/1976 257.382 6.50758 0.81342
8 01/1974 237.996 5.65132 0.75215
9 05/1983 206.306 4.99419 0.69846
10 04/1988 198.316 4.47396 0.65069
11 07/1984 195.979 4.05189 0.60766
12 02/2001 168.348 3.70259 0.56851
13 12/1975 133.596 3.40873 0.53259
14 03/2014 130.291 3.15809 0.49942
15 06/1988 118.748 2.94178 0.46861
16 04/1989 116.378 2.75321 0.43984
17 02/2010 111.956 2.58735 0.41286
18 11/1981 106.15 2.44034 0.38745
19 03/1999 94.511 2.30914 0.36345
20 07/1988 75.079 2.19133 0.34071
21 02/1975 74.861 2.08495 0.31910
22 02/1991 67.069 1.98843 0.29851
23 05/2015 58.743 1.90044 0.27885
24 06/1983 51.445 1.81992 0.26005
25 04/1990 50.39 1.74593 0.24203
26 03/2004 49.894 1.67773 0.22472
27 03/2013 47.72 1.61466 0.20808
28 12/1981 46.597 1.55616 0.19205
29 02/2008 44.021 1.50175 0.17660
30 01/2010 43.534 1.45101 0.16167
31 02/1990 40.098 1.40359 0.14724
32 01/2012 39.499 1.35918 0.13328
33 12/2009 38.859 1.31748 0.11975
34 11/1999 37.383 1.27827 0.10662
35 06/1979 36.861 1.24133 0.09389
36 12/1997 34.65 1.20646 0.08151
37 04/1984 33.951 1.17350 0.06948
38 11/1983 32.18 1.14229 0.05778
39 03/2001 30.299 1.11269 0.04638
40 02/1973 29.772 1.08460 0.03527
41 01/1975 28.76 1.05788 0.02444
42 01/2004 28.278 1.03245 0.01387
43 01/1985 25.812 1.00822 0.00355
  • Provide a regression plot with fitted equation. Report the floods that were excluded from the regression.  
  •                                                                                                 10 marks
  •  
  • Provide a Partial Series frequency chart                                                             10 marks

          표 10 NExp table of emu creek

Y ARI Qy
99 1.010 2.33727
95 1.053 8.11017
90 1.111 15.67813
80 1.250 32.16459
50 2.000 97.95246
20 5.000 226.20852
10 10.000 323.23049
5 20.000 420.25246
2 50.000 548.50852
1 100.000 645.53049

그림 6 The Partial series frequency charts

  • Report the design discharge estimates for the specified ARIs                               10 marks

6.        RFFE design discharge estimates

  • Provide a catchment plan showing the catchment boundary and centroid for Emu Creek upstream of the streamgauge               20 marks
  • State the key information to use RFFE, including the centroid and streamgauge coordinates, and catchment area.    

                                                                                    5 marks

   표 11 Emu creek centroid and streamgauge coordinates, and catchment area

Enu creek 　
Catchment area (km^2) 148
Lat (outlet) -28.23
Lon (outlet) 152.23
latc (Centroid) -28.2105
lonc (centroid) 152.345
  • Table the RFFE design discharge estimates for the specified ARIs                      10 marks

      표 12 The RFFE design discharge information

AEP(%) ARI Q(m3/s) CL5 CL95
50 2 50.8 34.3 75
20 5 184.4 131.6 257.4
10 10 325.3 234.6 469.4
5 20 493.7 347 807.3
2 5- 748.7 485.3 1518.2
1 100 959.5 571.1 2344.4

7.        Assessment of January 2011 flood rainfalls

  • Provide plots of the January 2011 flood hydrograph and rainfall from the Water Portal                                                                                                                             10 marks

      그림 7 The January 2011 flood hydrograph and rainfall data of emu creek

  • Provide an IFD rainfall depth table covering ARIs from 1 to 100 years and durations from 1 to 24 hours at the gauge location, including the time of concentration values          10 marks

표 13 The IFD rainfall depth of emu creek

　 ARI
Duration (hrs) 1year 2years 5 years 10 years 20 years 50 years 100 years
1 28.1 35.3 41.9 45.8 51.5 59.1 64.9
2 34.4 43.2 51.6 16.4 63.4 72.8 80
3 37.8 47.7 57 62.4 70.2 81 89.1
6 43.86 55.5 66.6 73.8 83.4 96.6 106.8
12 51.6 65.64 80.16 88.92 101.4 118.32 130.8
24 62.4 79.68 100.08 112.08 129.12 152.16 170.64
  • Give the following details of the January 2011 storm associated with the flood peak: total rainfall for the two-day rainfall event, the observed rainfall intensity corresponding to the time of concentration of the catchment, the AEP of this rainfall intensity and the approximate AEP of the peak flood discharge                                                                            10 marks

8.        Selection of design discharge estimates

  • Compile the design discharge estimates in a single table                                     5 marks

표 14 Expected Range of Design Discharges for Different Return Periods

ARI AEP Annual FFA Partial FFA RFFE
including all data excluding missing data
99 1.01 0.0743 5.7031 244.6251 –
95 1.05 0.6661 10.4112 328.8708 –
90 1.11 1.8894 14.7717 377.8376 –
80 1.25 5.9451 23.1570 440.7677 –
50 2.00 38.0879 59.5523 572.9804 50.8
20 5.00 161.7845 172.0606 721.4906 184.4
10 10.00 296.9860 314.4604 805.8960 325.3
5 20.00 456.9323 529.8857 878.9344 493.7
2 50.00 690.9681 981.3954 965.2018 748.7
1 100.00 876.0184 1504.5600 1025.0096 959.5
0.5 200.00 1061.3317 2251.8876 – –
0.2 500.00 1299.2510 3726.8042 – –
  • Plot the estimates on linear ARI-Q scale (include also the selected design discharges, from the next step)                                                                                                  10 marks
  • Table your selected design discharge estimate for each ARI and provide statements to justify your selection                                                                                                            10 marks
QUALITY: 100% ORIGINAL PAPER – NO PLAGIARISM – CUSTOM PAPER

Leave a Reply

Your email address will not be published. Required fields are marked *