INTENSITAS HUJAN RENCANA METODE LOG PEARSON TYPEIII MENGHITUNG DEBIT PUNCAK DENGAN METODE NAKAYASU •
Tabel 4.22 Input Unit Hidrograf sub DAS Sei Percut
No Parameter Unit Higrograf
1 Panjang sungaisaluran L
L =
70,00 km
2 Luas DAS
F
DAS
= 514,00
km
2
3 Koef. Pengaliran DAS
Cw
DAS
=
0,599
3 Time tag Tg
Tg = 4,460
jam Syarat :
L 15 km; Tg = 0,4 +0,058L L 15 km; Tg = 0,21L
0,7
4 Satuan waktu hujan tr
Tr =
3,345 jam
Syarat : Tr = 0,5 tg s.d 1,0 tg
5 Peak time Tp
Tp = Tg + 0,8.tr =
7,136 jam
6 Parameter hidrograf
Parameter alfa a =
2.000 T
0,3
= 8,920
jam 0,5T
0,3
= 4,460
jam
1,5T
0,3
= 13,380
jam 2,0T
0,3
= 17,840
jam 7
Curah hujan spesifik R R
= 1.000
mm 8
Debit puncak Qp
= 7,732
m
3
dtmm 9
Base flow Qb
= 3,866
m
3
dtmm
Tabel 4.23 Distribusi Curah Hujan Rencana Log Pearson Type III
Perioda ulang
Curah hujan
Nisbah Jam ke- Jam ke-
1 2
3 4
5 6
1 2
3 4
5 6
2 90,084
55 15 11 7 7 5 49,55 13,51 9,91
6,31 6,31
4,50 5
102,192 55 15 11 7 7 5 56,21 15,33 11,24
7,15 7,15
5,11 10
109,836 55 15 11 7 7 5 60,41 16,48 12,08
7,69 7,69
5,49 20
116,357 55 15 11 7 7 5 64,00 17,45 12,80
8,14 8,14
5,82 25
119,770 55 15 11 7 7 5 65,87 17,97 13,17
8,38 8,38
5,99 50
125,998 55 15 11 7 7 5 69,30 18,90 13,86
8,82 8,82
6,30 100
132,683 55 15 11 7 7 5 72,98 19,90 14,60
9,29 9,29
6,63
Tabel 4.24 HSS Nakayasu Debit Unit Hidrograf
Waktu Lengkung
Naik Lengkung Turun
Debit Debit
0 t ≤ Tp
Tp t ≤
T
0,3
T
0,3
t ≤
1,5T
0,3
1,5T
0,3
t ≤ 24
Unit Hidrograf
Unit Hidrograf
t tTp
2.4
t-Tp t-
Tp+0.5T
0,3
Qt t-
Tp+1.5T
0,3
Qt jam
T
0,3
1.5T
0,3
2T
0,3
m3dt m
3
dt 1
2 3
4 5
6 7
0,000 0,00000
0,00000 0,00000
0,500 0,01311
0,01311 0,10135
1,000 0,06918
0,06918 0,53495
1,500 0,18307
0,18307 1,41556
2,000 0,36516
0,36516 2,82346
2,500 0,62383
0,62383 4,82354
3,000 0,96627
0,96627 7,47139
3,500 1,39885
1,39885 10,81617
4,000 1,92732
1,92732 14,90233
4,500 2,55693
2,55693 19,77062
5,000 3,29259
3,29259 25,45882
5,500 4,13885
4,13885 32,00226
6,000 5,10002
5,10002 39,43421
6,500 6,18018
6,18018 47,78617
7,000 7,38320
7,38320 57,08809
7,136 7,73216
7,73216 59,78632
7,500 7,36146
7,36146 0,00109
8,000 6,88104
6,88104 0,00195
8,500 6,43198
6,43198 0,00335
9,000 6,01223
6,01223 0,00555
9,500 5,61987
5,61987 0,00891
Waktu Lengkung
Naik Lengkung Turun
Debit Debit
0 t ≤ Tp
Tp t ≤
T
0,3
T
0,3
t ≤
1,5T
0,3
1,5T
0,3
t ≤ 24
Unit Hidrograf
Unit Hidrograf
t tTp
2.4
t-Tp t-
Tp+0.5T
0,3
Qt t-
Tp+1.5T
0,3
Qt jam
T
0,3
1.5T
0,3
2T
0,3
m3dt m
3
dt 1
2 3
4 5
6 7
10,000 5,25312
5,25312 0,01385
10,500 4,91030
4,91030 0,02093
11,000 4,58985
4,58985 0,03079
11,500 4,29031
4,29031 0,04416
12,000 4,01033
4,01033 0,06186
12,500 3,74861
3,74861 0,08477
13,000 3,50397
3,50397 0,11380
13,500 3,27530
3,27530 0,14987
14,000 3,06156
3,06156 0,19386
14,500 2,86176
2,86176 0,24657
15,000 2,67500
2,67500 0,30875
15,500 2,50043
2,50043 0,38096
16,000 2,33725
2,33725 0,46366
16,056 2,31965
2,31965 0,47359
16,500 2,22880
2,22880 0,52833
17,000 2,13074
2,13074 0,59454
17,500 2,03700
2,03700 0,66557
18,000 1,94739
1,94739 0,74140
18,500 1,86171
1,86171 0,82196
19,000 1,77981
1,77981 0,90715
19,500 1,70151
1,70151 0,99683
20,000 1,62665
1,62665 1,09084
20,500 1,55509
1,55509 1,18899
21,000 1,48667
1,48667 1,29108
21,500 1,42127
1,42127 1,39685
22,000 1,35874
1,35874 1,50607
22,500 1,29896
1,29896 1,61846
23,000 1,24181
1,24181 1,73373
23,500 1,18718
1,18718 1,85161
24,000 1,13495
1,13495 1,97178
24,500 1,08502
1,08502 2,09395
25,000 1,03729
1,03729 2,21782
25,500 0,99165
0,99165 2,34308
26,000 0,94802
0,94802 2,46944
26,500 0,90632
0,90632 2,59661
Waktu Lengkung
Naik Lengkung Turun
Debit Debit
0 t ≤ Tp
Tp t ≤
T
0,3
T
0,3
t ≤
1,5T
0,3
1,5T
0,3
t ≤ 24
Unit Hidrograf
Unit Hidrograf
t tTp
2.4
t-Tp t-
Tp+0.5T
0,3
Qt t-
Tp+1.5T
0,3
Qt jam
T
0,3
1.5T
0,3
2T
0,3
m3dt m
3
dt 1
2 3
4 5
6 7
27,000 0,86644
0,86644 2,72431
27,500 0,82832
0,82832 2,85225
28,000 0,79188
0,79188 2,98018
28,500 0,75704
0,75704 3,10784
29,000 0,72374
0,72374 3,23499
29,436 0,69589
0,69589 3,34528
29,500 0,69290
0,69290 3,35738
30,000 0,66990
0,66990 3,45161
30,500 0,64768
0,64768 3,54523
31,000 0,62619
0,62619 3,63816
31,500 0,60541
0,60541 3,73031
32,000 0,58532
0,58532 3,82163
32,500 0,56590
0,56590 3,91205
33,000 0,54712
0,54712 4,00149
33,500 0,52897
0,52897 4,08991
34,000 0,51142
0,51142 4,17726
34,500 0,49445
0,49445 4,26348
35,000 0,47804
0,47804 4,34853
35,500 0,46218
0,46218 4,43238
36,000 0,44684
0,44684 4,51497
Tabel 4.25 Hidrograf Nakayasu T = 2 tahun
Debit Puncak Qp = 7,732 dtk
Base Flow Qb = 3,866 dtk
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 49,55
13,51 9,91
6,31 6,31
4,50 m
3
dt m
3
dt m
3
dt m
3
m
3
0,000 0,00000
0,000 0,000
3,866 3,866
13.917,89 13.917,89
0,500 0,01311
0,649 0,649
3,866 4,516
16.255,93 30.173,82
1,000 0,06918
3,428 3,428
3,866 7,294
26.258,14 56.431,96
1,500 0,18307
9,071 9,071
3,866 12,937
46.572,38 103.004,34
2,000 0,36516
18,092 4,934
23,027 3,866
26,893 96.813,45
199.817,79 2,500
0,62383 30,908
8,430 39,338
3,866 43,204
155.534,86 355.352,65
3,000 0,96627
47,875 13,057
60,932 3,866
64,798 233.274,28
588.626,92 3,500
1,39885 69,308
18,902 13,862
102,072 3,866
105,938 381.377,45
970.004,38 4,000
1,92732 95,492
26,043 19,098
140,633 3,866
144,499 520.197,26
1.490.201,63 4,500
2,55693 126,687
34,551 25,337
16,124 202,699
3,866 206,565
743.634,00 2.233.835,64
5,000 3,29259
163,136 44,492
32,627 20,763
261,017 3,866
264,883 953.580,43
3.187.416,06 5,500
4,13885 205,065
55,927 41,013
26,099 328,104
3,866 331,970
1.195.093,19 4.382.509,25
6,000 5,10002
252,688 68,915
50,538 32,160
32,160 436,461
3,866 440,327
1.585.177,10 5.967.686,35
6,500 6,18018
306,206 83,511
61,241 38,972
38,972 528,901
3,866 532,767
1.917.961,50 7.885.647,85
7,000 7,38320
365,811 99,767
73,162 46,558
46,558 33,256
665,111 3,866
668,977 2.408.316,91
10.293.964,76 7,136
7,73216 383,101
104,482 76,620
48,758 48,758
34,827 696,547
3,866 700,413
2.521.486,64 12.815.451,40
7,500 7,36146
364,734 99,473
72,947 46,421
46,421 33,158
663,152 3,866
667,018 2.401.265,42
15.216.716,82 8,000
6,88104 340,931
92,981 68,186
43,391 43,391
30,994 619,875
3,866 623,741
2.245.466,23 17.462.183,05
8,500 6,43198
318,682 86,913
63,736 40,559
40,559 28,971
579,421 3,866
583,287 2.099.834,54
19.562.017,59 9,000
6,01223 297,884
81,241 59,577
37,913 37,913
27,080 541,608
3,866 545,474
1.963.706,84 21.525.724,43
9,500 5,61987
278,444 75,939
55,689 35,438
35,438 25,313
506,262 3,866
510,129 1.836.462,88
23.362.187,31 10,000
5,25312 260,273
70,984 52,055
33,126 33,126
23,661 473,224
3,866 477,090
1.717.522,91 25.079.710,22
10,500 4,91030
243,287 66,351
48,657 30,964
30,964 22,117
442,341 3,866
446,207 1.606.345,01
26.686.055,23 11,000
4,58985 227,410
62,021 45,482
28,943 28,943
20,674 413,474
3,866 417,340
1.502.422,62 28.188.477,85
11,500 4,29031
212,570 57,974
42,514 27,054
27,054 19,325
386,490 3,866
390,356 1.405.282,24
29.593.760,08
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 49,55
13,51 9,91
6,31 6,31
4,50 m
3
dt m
3
dt m
3
dt m
3
m
3
12,000 4,01033
198,697 54,190
39,739 25,289
25,289 18,063
361,268 3,866
365,134 1.314.481,28
30.908.241,36 12,500
3,74861 185,730
50,654 37,146
23,638 23,638
16,885 337,691
3,866 341,557
1.229.606,02 32.137.847,39
13,000 3,50397
173,609 47,348
34,722 22,096
22,096 15,783
315,653 3,866
319,519 1.150.269,76
33.288.117,15 13,500
3,27530 162,280
44,258 32,456
20,654 20,654
14,753 295,054
3,866 298,920
1.076.111,01 34.364.228,16
14,000 3,06156
151,689 41,370
30,338 19,306
19,306 13,790
275,798 3,866
279,664 1.006.791,89
35.371.020,05 14,500
2,86176 141,790
38,670 28,358
18,046 18,046
12,890 257,800
3,866 261,666
941.996,56 36.313.016,61
15,000 2,67500
132,537 36,146
26,507 16,868
16,868 12,049
240,976 3,866
244,842 881.429,80
37.194.446,40 15,500
2,50043 123,887
33,787 24,777
15,767 15,767
11,262 225,249
3,866 229,115
824.815,64 38.019.262,05
16,000 2,33725
115,802 31,582
23,160 14,738
14,738 10,527
210,550 3,866
214,416 771.896,15
38.791.158,20 16,056
2,31965 114,930
31,345 22,986
14,627 14,627
10,448 208,964
3,866 212,830
766.188,52 39.557.346,71
16,500 2,22880
110,429 30,117
22,086 14,055
14,055 10,039
200,780 3,866
204,646 736.725,92
40.294.072,64 17,000
2,13074 105,571
28,792 21,114
13,436 13,436
9,597 191,947
3,866 195,813
704.926,42 40.998.999,05
17,500 2,03700
100,926 27,525
20,185 12,845
12,845 9,175
183,502 3,866
187,368 674.525,91
41.673.524,96 18,000
1,94739 96,486
26,314 19,297
12,280 12,280
8,771 175,429
3,866 179,295
645.462,86 42.318.987,82
18,500 1,86171
92,241 25,157
18,448 11,740
11,740 8,386
167,711 3,866
171,577 617.678,41
42.936.666,23 19,000
1,77981 88,183
24,050 17,637
11,223 11,223
8,017 160,333
3,866 164,199
591.116,33 43.527.782,56
19,500 1,70151
84,304 22,992
16,861 10,730
10,730 7,664
153,279 3,866
157,145 565.722,83
44.093.505,39 20,000
1,62665 80,595
21,980 16,119
10,258 10,258
7,327 146,536
3,866 150,402
541.446,50 44.634.951,89
20,500 1,55509
77,049 21,013
15,410 9,806
9,806 7,004
140,089 3,866
143,955 518.238,20
45.153.190,09 21,000
1,48667 73,659
20,089 14,732
9,375 9,375
6,696 133,926
3,866 137,792
496.050,93 45.649.241,01
21,500 1,42127
70,419 19,205
14,084 8,962
8,962 6,402
128,034 3,866
131,900 474.839,77
46.124.080,79 22,000
1,35874 67,321
18,360 13,464
8,568 8,568
6,120 122,401
3,866 126,267
454.561,79 46.578.642,57
22,500 1,29896
64,359 17,552
12,872 8,191
8,191 5,851
117,016 3,866
120,882 435.175,92
47.013.818,50 23,000
1,24181 61,527
16,780 12,305
7,831 7,831
5,593 111,868
3,866 115,734
416.642,93 47.430.461,43
23,500 1,18718
58,821 16,042
11,764 7,486
7,486 5,347
106,946 3,866
110,813 398.925,28
47.829.386,71 24,000
1,13495 56,233
15,336 11,247
7,157 7,157
5,112 102,241
3,866 106,108
381.987,11 48.211.373,82
24,500 1,08502
53,759 14,662
10,752 6,842
6,842 4,887
97,743 3,866
101,609 365.794,13
48.577.167,95 25,000
1,03729 51,394
14,016 10,279
6,541 6,541
4,672 93,443
3,866 97,309
350.313,54 48.927.481,49
25,500 0,99165
49,133 13,400
9,827 6,253
6,253 4,467
89,332 3,866
93,198 335.514,02
49.262.995,51 26,000
0,94802 46,971
12,810 9,394
5,978 5,978
4,270 85,402
3,866 89,268
321.365,59 49.584.361,10
26,500 0,90632
44,905 12,247
8,981 5,715
5,715 4,082
81,645 3,866
85,511 307.839,61
49.892.200,71
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 49,55
13,51 9,91
6,31 6,31
4,50 m
3
dt m
3
dt m
3
dt m
3
m
3
27,000 0,86644
42,929 11,708
8,586 5,464
5,464 3,903
78,053 3,866
81,919 294.908,70
50.187.109,41 27,500
0,82832 41,041
11,193 8,208
5,223 5,223
3,731 74,619
3,866 78,485
282.546,68 50.469.656,09
28,000 0,79188
39,235 10,700
7,847 4,994
4,994 3,567
71,336 3,866
75,202 270.728,52
50.740.384,60 28,500
0,75704 37,509
10,230 7,502
4,774 4,774
3,410 68,198
3,866 72,064
259.430,29 50.999.814,89
29,000 0,72374
35,859 9,780
7,172 4,564
4,564 3,260
65,198 3,866
69,064 248.629,11
51.248.444,00 29,436
0,69589 34,479
9,403 6,896
4,388 4,388
3,134 62,689
3,866 66,555
239.599,08 51.488.043,08
29,500 0,69290
34,330 9,363
6,866 4,369
4,369 3,121
62,419 3,866
66,285 238.626,42
51.726.669,50 30,000
0,66990 33,191
9,052 6,638
4,224 4,224
3,017 60,348
3,866 64,214
231.170,44 51.957.839,94
30,500 0,64768
32,090 8,752
6,418 4,084
4,084 2,917
58,346 3,866
62,212 223.961,86
52.181.801,80 31,000
0,62619 31,025
8,461 6,205
3,949 3,949
2,820 56,410
3,866 60,276
216.992,46 52.398.794,26
31,500 0,60541
29,996 8,181
5,999 3,818
3,818 2,727
54,538 3,866
58,404 210.254,31
52.609.048,57 32,000
0,58532 29,001
7,909 5,800
3,691 3,691
2,636 52,728
3,866 56,594
203.739,74 52.812.788,31
32,500 0,56590
28,038 7,647
5,608 3,569
3,569 2,549
50,979 3,866
54,845 197.441,32
53.010.229,63 33,000
0,54712 27,108
7,393 5,422
3,450 3,450
2,464 49,287
3,866 53,153
191.351,89 53.201.581,52
33,500 0,52897
26,209 7,148
5,242 3,336
3,336 2,383
47,652 3,866
51,518 185.464,51
53.387.046,04 34,000
0,51142 25,339
6,911 5,068
3,225 3,225
2,304 46,071
3,866 49,937
179.772,48 53.566.818,52
34,500 0,49445
24,498 6,681
4,900 3,118
3,118 2,227
44,542 3,866
48,408 174.269,32
53.741.087,83 35,000
0,47804 23,685
6,460 4,737
3,014 3,014
2,153 43,064
3,866 46,930
168.948,75 53.910.036,58
35,500 0,46218
22,899 6,245
4,580 2,914
2,914 2,082
41,635 3,866
45,501 163.804,72
54.073.841,30 36,000
0,44684 22,140
6,038 4,428
2,818 2,818
2,013 40,254
3,866 44,120
158.831,38 54.232.672,68
Grafik 4.1 Periode Ulang 2 Tahun
Tabel 4.26 Hidrograf Nakayasu T = 5 tahun
Debit Puncak Qp = 7,732 dtk
Base Flow Qb = 3,866 dtk
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 56,21
15,33 11,24
7,15 7,15
5,11 m
3
dt m
3
dt m
3
dt m
3
m
3
0,000 0,00000
0,000 0,000
3,866 3,866
13.917,89 13.917,89
0,500 0,01311
0,737 0,737
3,866 4,603
16.570,17 30.488,06
1,000 0,06918
3,889 3,889
3,866 7,755
27.916,70 58.404,75
1,500 0,18307
10,290 10,290
3,866 14,156
50.961,22 109.365,97
2,000 0,36516
20,524 20,524
3,866 24,390
87.804,03 197.170,00
2,500 0,62383
35,063 9,563
44,625 3,866
48,491 174.568,49
371.738,50 3,000
0,96627 54,310
14,812 69,122
3,866 72,988
262.756,26 634.494,76
3,500 1,39885
78,623 21,443
15,725 115,791
3,866 119,657
430.764,84 1.065.259,60
4,000 1,92732
108,326 29,543
21,665 159,535
3,866 163,401
588.242,33 1.653.501,93
4,500 2,55693
143,714 39,195
28,743 18,291
229,942 3,866
233,808 841.709,47
2.495.211,40 5,000
3,29259 185,062
50,471 37,012
23,553 296,099
3,866 299,965
1.079.873,17 3.575.084,57
5,500 4,13885
232,626 63,444
46,525 29,607
372,202 3,866
376,068 1.353.845,78
4.928.930,35 6,000
5,10002 286,650
78,177 57,330
36,483 36,483
495,122 3,866
498,988 1.796.357,84
6.725.288,19 6,500
6,18018 347,361
94,735 69,472
44,210 44,210
599,986 3,866
603,853 2.173.869,20
8.899.157,40 7,000
7,38320 414,977
113,175 82,995
52,815 52,815
37,725 754,503
3,866 758,369
2.730.129,47 11.629.286,87
7,136 7,73216
434,590 118,525
86,918 55,312
55,312 39,508
790,164 3,866
794,030 2.858.509,47
14.487.796,34 7,500
7,36146 413,755
112,842 82,751
52,660 52,660
37,614 752,281
3,866 756,147
2.722.130,25 17.209.926,59
8,000 6,88104
386,753 105,478
77,351 49,223
49,223 35,159
703,187 3,866
707,053 2.545.391,29
19.755.317,88 8,500
6,43198 361,513
98,595 72,303
46,011 46,011
32,865 657,297
3,866 661,163
2.380.186,39 22.135.504,27
9,000 6,01223
337,921 92,160
67,584 43,008
43,008 30,720
614,401 3,866
618,267 2.225.762,82
24.361.267,09 9,500
5,61987 315,868
86,146 63,174
40,201 40,201
28,715 574,305
3,866 578,171
2.081.416,99 26.442.684,08
10,000 5,25312
295,254 80,524
59,051 37,578
37,578 26,841
536,826 3,866
540,692 1.946.491,22
28.389.175,30 10,500
4,91030 275,986
75,269 55,197
35,125 35,125
25,090 501,792
3,866 505,659
1.820.370,76 30.209.546,06
11,000 4,58985
257,975 70,357
51,595 32,833
32,833 23,452
469,045 3,866
472,911 1.702.480,97
31.912.027,03 11,500
4,29031 241,139
65,765 48,228
30,690 30,690
21,922 438,435
3,866 442,301
1.592.284,71 33.504.311,74
12,000 4,01033
225,403 61,473
45,081 28,688
28,688 20,491
409,823 3,866
413,689 1.489.279,90
34.993.591,64 12,500
3,74861 210,693
57,462 42,139
26,815 26,815
19,154 383,078
3,866 386,944
1.392.997,22 36.386.588,85
13,000 3,50397
196,943 53,712
39,389 25,065
25,065 17,904
358,078 3,866
361,944 1.302.997,98
37.689.586,84
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 56,21
15,33 11,24
7,15 7,15
5,11 m
3
dt m
3
dt m
3
dt m
3
m
3
13,500 3,27530
184,090 50,206
36,818 23,430
23,430 16,735
334,710 3,866
338,576 1.218.872,13
38.908.458,97 14,000
3,06156 172,076
46,930 34,415
21,901 21,901
15,643 312,866
3,866 316,732
1.140.236,37 40.048.695,34
14,500 2,86176
160,847 43,867
32,169 20,471
20,471 14,622
292,448 3,866
296,315 1.066.732,40
41.115.427,74 15,000
2,67500 150,350
41,004 30,070
19,135 19,135
13,668 273,363
3,866 277,229
998.025,33 42.113.453,07
15,500 2,50043
140,538 38,329
28,108 17,887
17,887 12,776
255,523 3,866
259,389 933.802,11
43.047.255,18 16,000
2,33725 131,366
35,827 26,273
16,719 16,719
11,942 238,848
3,866 242,714
873.770,12 43.921.025,30
16,056 2,31965
130,377 35,557
26,075 16,593
16,593 11,852
237,049 3,866
240,915 867.295,36
44.788.320,66 16,500
2,22880 125,271
34,165 25,054
15,944 15,944
11,388 227,765
3,866 231,631
833.872,93 45.622.193,59
17,000 2,13074
119,760 32,662
23,952 15,242
15,242 10,887
217,745 3,866
221,611 797.799,50
46.419.993,10 17,500
2,03700 114,491
31,225 22,898
14,572 14,572
10,408 208,165
3,866 212,031
763.313,10 47.183.306,20
18,000 1,94739
109,454 29,851
21,891 13,931
13,931 9,950
199,007 3,866
202,873 730.343,91
47.913.650,10 18,500
1,86171 104,639
28,538 20,928
13,318 13,318
9,513 190,252
3,866 194,118
698.825,17 48.612.475,28
19,000 1,77981
100,035 27,282
20,007 12,732
12,732 9,094
181,882 3,866
185,748 668.693,09
49.281.168,36 19,500
1,70151 95,634
26,082 19,127
12,172 12,172
8,694 173,880
3,866 177,746
639.886,64 49.921.055,00
20,000 1,62665
91,427 24,935
18,285 11,636
11,636 8,312
166,230 3,866
170,097 612.347,52
50.533.402,53 20,500
1,55509 87,404
23,838 17,481
11,124 11,124
7,946 158,917
3,866 162,783
586.019,97 51.119.422,50
21,000 1,48667
83,559 22,789
16,712 10,635
10,635 7,596
151,926 3,866
155,792 560.850,68
51.680.273,18 21,500
1,42127 79,883
21,786 15,977
10,167 10,167
7,262 145,242
3,866 149,108
536.788,70 52.217.061,88
22,000 1,35874
76,369 20,828
15,274 9,720
9,720 6,943
138,852 3,866
142,718 513.785,31
52.730.847,19 22,500
1,29896 73,009
19,912 14,602
9,292 9,292
6,637 132,743
3,866 136,609
491.793,94 53.222.641,13
23,000 1,24181
69,797 19,036
13,959 8,883
8,883 6,345
126,903 3,866
130,769 470.770,07
53.693.411,20 23,500
1,18718 66,726
18,198 13,345
8,492 8,492
6,066 121,320
3,866 125,186
450.671,13 54.144.082,34
24,000 1,13495
63,791 17,397
12,758 8,119
8,119 5,799
115,983 3,866
119,849 431.456,44
54.575.538,77 24,500
1,08502 60,984
16,632 12,197
7,762 7,762
5,544 110,880
3,866 114,746
413.087,08 54.988.625,85
25,000 1,03729
58,301 15,900
11,660 7,420
7,420 5,300
106,002 3,866
109,868 395.525,87
55.384.151,72 25,500
0,99165 55,736
15,201 11,147
7,094 7,094
5,067 101,339
3,866 105,205
378.737,25 55.762.888,97
26,000 0,94802
53,284 14,532
10,657 6,782
6,782 4,844
96,880 3,866
100,746 362.687,24
56.125.576,22 26,500
0,90632 50,940
13,893 10,188
6,483 6,483
4,631 92,618
3,866 96,484
347.343,34 56.472.919,56
27,000 0,86644
48,699 13,282
9,740 6,198
6,198 4,427
88,544 3,866
92,410 332.674,49
56.805.594,05 27,500
0,82832 46,556
12,697 9,311
5,925 5,925
4,232 84,648
3,866 88,514
318.650,99 57.124.245,04
28,000 0,79188
44,508 12,139
8,902 5,665
5,665 4,046
80,924 3,866
84,790 305.244,44
57.429.489,47 28,500
0,75704 42,550
11,605 8,510
5,415 5,415
3,868 77,364
3,866 81,230
292.427,70 57.721.917,17
29,000 0,72374
40,678 11,094
8,136 5,177
5,177 3,698
73,960 3,866
77,826 280.174,83
58.002.092,00 29,436
0,69589 39,113
10,667 7,823
4,978 4,978
3,556 71,115
3,866 74,981
269.931,13 58.272.023,13
29,500 0,69290
38,945 10,621
7,789 4,957
4,957 3,540
70,808 3,866
74,674 268.827,75
58.540.850,88
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 56,21
15,33 11,24
7,15 7,15
5,11 m
3
dt m
3
dt m
3
dt m
3
m
3
30,000 0,66990
37,652 10,269
7,530 4,792
4,792 3,423
68,459 3,866
72,325 260.369,67
58.801.220,55 30,500
0,64768 36,403
9,928 7,281
4,633 4,633
3,309 66,187
3,866 70,053
252.192,24 59.053.412,78
31,000 0,62619
35,195 9,599
7,039 4,479
4,479 3,200
63,991 3,866
67,857 244.286,13
59.297.698,92 31,500
0,60541 34,027
9,280 6,805
4,331 4,331
3,093 61,868
3,866 65,734
236.642,36 59.534.341,28
32,000 0,58532
32,898 8,972
6,580 4,187
4,187 2,991
59,815 3,866
63,681 229.252,22
59.763.593,50 32,500
0,56590 31,807
8,675 6,361
4,048 4,048
2,892 57,830
3,866 61,696
222.107,28 59.985.700,78
33,000 0,54712
30,751 8,387
6,150 3,914
3,914 2,796
55,912 3,866
59,778 215.199,42
60.200.900,19 33,500
0,52897 29,731
8,108 5,946
3,784 3,784
2,703 54,056
3,866 57,922
208.520,76 60.409.420,95
34,000 0,51142
28,745 7,839
5,749 3,658
3,658 2,613
52,263 3,866
56,129 202.063,71
60.611.484,66 34,500
0,49445 27,791
7,579 5,558
3,537 3,537
2,526 50,529
3,866 54,395
195.820,91 60.807.305,57
35,000 0,47804
26,869 7,328
5,374 3,420
3,420 2,443
48,852 3,866
52,718 189.785,24
60.997.090,81 35,500
0,46218 25,977
7,085 5,195
3,306 3,306
2,362 47,231
3,866 51,097
183.949,85 61.181.040,66
36,000 0,44684
25,115 6,850
5,023 3,196
3,196 2,283
45,664 3,866
49,530 178.308,07
61.359.348,73
Grafik 4.2 Periode Ulang 5 Tahun
Tabel 4.27 Hidrograf Nakayasu T = 10 tahun
Debit Puncak Qp = 7,732 dtk
Base Flow Qb = 3,866 dtk
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 60,41
16,48 12,08
7,69 7,69
5,49 m
3
dt m
3
dt m
3
dt m
3
m
3
0,000 0,00000
0,000 0,000
3,866 3,866
13.917,89 13.917,89
0,500 0,01311
0,792 0,792
3,866 4,658
16.768,55 30.686,44
1,000 0,06918
4,179 4,179
3,866 8,045
28.963,76 59.650,20
1,500 0,18307
11,059 11,059
3,866 14,926
53.731,94 113.382,15
2,000 0,36516
22,059 6,016
28,075 3,866
31,941 114.988,46
228.370,61 2,500
0,62383 37,685
10,278 47,963
3,866 51,829
186.584,66 414.955,27
3,000 0,96627
58,372 15,920
74,292 3,866
78,158 281.368,59
696.323,86 3,500
1,39885 84,504
23,047 16,901
124,452 3,866
128,318 461.943,69
1.158.267,55 4,000
1,92732 116,428
31,753 23,286
171,467 3,866
175,333 631.200,00
1.789.467,55 4,500
2,55693 154,463
42,126 30,893
19,659 247,141
3,866 251,007
903.625,69 2.693.093,24
5,000 3,29259
198,904 54,246
39,781 25,315
318,246 3,866
322,112 1.159.603,29
3.852.696,53 5,500
4,13885 250,026
68,189 50,005
31,822 400,042
3,866 403,908
1.454.068,20 5.306.764,73
6,000 5,10002
308,090 84,025
61,618 39,211
39,211 532,156
3,866 536,022
1.929.678,77 7.236.443,50
6,500 6,18018
373,342 101,821
74,668 47,516
47,516 644,864
3,866 648,730
2.335.426,80 9.571.870,30
7,000 7,38320
446,016 121,641
89,203 56,766
56,766 40,547
810,938 3,866
814,804 2.933.293,60
12.505.163,90 7,136
7,73216 467,096
127,390 93,419
59,449 59,449
42,463 849,266
3,866 853,132
3.071.276,02 15.576.439,92
7,500 7,36146
444,702 121,282
88,940 56,598
56,598 40,427
808,549 3,866
812,416 2.924.696,06
18.501.135,98 8,000
6,88104 415,681
113,367 83,136
52,905 52,905
37,789 755,783
3,866 759,649
2.734.737,58 21.235.873,57
8,500 6,43198
388,553 105,969
77,711 49,452
49,452 35,323
706,461 3,866
710,327 2.557.175,87
23.793.049,44 9,000
6,01223 363,196
99,054 72,639
46,225 46,225
33,018 660,357
3,866 664,223
2.391.201,90 26.184.251,34
9,500 5,61987
339,494 92,589
67,899 43,208
43,208 30,863
617,262 3,866
621,128 2.236.059,45
28.420.310,79 10,000
5,25312 317,338
86,547 63,468
40,389 40,389
28,849 576,979
3,866 580,845
2.091.041,66 30.511.352,45
10,500 4,91030
296,629 80,899
59,326 37,753
37,753 26,966
539,325 3,866
543,191 1.955.487,78
32.466.840,23 11,000
4,58985 277,271
75,619 55,454
35,289 35,289
25,206 504,128
3,866 507,995
1.828.780,20 34.295.620,44
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif
jam m
3
dt 60,41
16,48 12,08
7,69 7,69
5,49 m
3
dt m
3
dt m
3
dt m
3
m
3
11,500 4,29031
259,176 70,684
51,835 32,986
32,986 23,561
471,229 3,866
475,095 1.710.341,61
36.005.962,04 12,000
4,01033 242,262
66,071 48,452
30,833 30,833
22,024 440,476
3,866 444,342
1.599.632,36 37.605.594,40
12,500 3,74861
226,452 61,760
45,290 28,821
28,821 20,587
411,731 3,866
415,597 1.496.148,04
39.101.742,44 13,000
3,50397 211,673
57,729 42,335
26,940 26,940
19,243 384,861
3,866 388,727
1.399.417,14 40.501.159,58
13,500 3,27530
197,860 53,962
39,572 25,182
25,182 17,987
359,745 3,866
363,611 1.308.998,94
41.810.158,52 14,000
3,06156 184,947
50,440 36,989
23,539 23,539
16,813 336,268
3,866 340,134
1.224.481,46 43.034.639,99
14,500 2,86176
172,877 47,148
34,575 22,003
22,003 15,716
314,323 3,866
318,189 1.145.479,63
44.180.119,62 15,000
2,67500 161,595
44,071 32,319
20,567 20,567
14,690 293,810
3,866 297,676
1.071.633,49 45.251.753,11
15,500 2,50043
151,050 41,195
30,210 19,225
19,225 13,732
274,636 3,866
278,502 1.002.606,57
46.254.359,68 16,000
2,33725 141,192
38,507 28,238
17,970 17,970
12,836 256,713
3,866 260,579
938.084,38 47.192.444,05
16,056 2,31965
140,129 38,217
28,026 17,835
17,835 12,739
254,780 3,866
258,646 931.125,33
48.123.569,38 16,500
2,22880 134,641
36,720 26,928
17,136 17,136
12,240 244,801
3,866 248,668
895.203,01 49.018.772,39
17,000 2,13074
128,717 35,105
25,743 16,382
16,382 11,702
234,032 3,866
237,898 856.431,39
49.875.203,78 17,500
2,03700 123,054
33,560 24,611
15,661 15,661
11,187 223,735
3,866 227,602
819.365,52 50.694.569,30
18,000 1,94739
117,641 32,084
23,528 14,972
14,972 10,695
213,892 3,866
217,758 783.930,33
51.478.499,63 18,500
1,86171 112,465
30,672 22,493
14,314 14,314
10,224 204,482
3,866 208,348
750.054,09 52.228.553,72
19,000 1,77981
107,517 29,323
21,503 13,684
13,684 9,774
195,486 3,866
199,352 717.668,22
52.946.221,95 19,500
1,70151 102,787
28,033 20,557
13,082 13,082
9,344 186,886
3,866 190,752
686.707,15 53.632.929,09
20,000 1,62665
98,265 26,800
19,653 12,506
12,506 8,933
178,664 3,866
182,530 657.108,19
54.290.037,28 20,500
1,55509 93,942
25,621 18,788
11,956 11,956
8,540 170,804
3,866 174,670
628.811,41 54.918.848,69
21,000 1,48667
89,809 24,493
17,962 11,430
11,430 8,164
163,289 3,866
167,155 601.759,54
55.520.608,24 21,500
1,42127 85,858
23,416 17,172
10,927 10,927
7,805 156,106
3,866 159,972
575.897,80 56.096.506,04
22,000 1,35874
82,081 22,386
16,416 10,447
10,447 7,462
149,238 3,866
153,104 551.173,83
56.647.679,87 22,500
1,29896 78,470
21,401 15,694
9,987 9,987
7,134 142,672
3,866 146,538
527.537,58 57.175.217,44
23,000 1,24181
75,017 20,459
15,003 9,548
9,548 6,820
136,395 3,866
140,261 504.941,19
57.680.158,63 23,500
1,18718 71,717
19,559 14,343
9,128 9,128
6,520 130,395
3,866 134,261
483.338,91 58.163.497,54
24,000 1,13495
68,562 18,699
13,712 8,726
8,726 6,233
124,658 3,866
128,524 462.687,01
58.626.184,55 24,500
1,08502 65,546
17,876 13,109
8,342 8,342
5,959 119,174
3,866 123,040
442.943,68 59.069.128,24
25,000 1,03729
62,662 17,090
12,532 7,975
7,975 5,697
113,931 3,866
117,797 424.068,95
59.493.197,19 25,500
0,99165 59,905
16,338 11,981
7,624 7,624
5,446 108,919
3,866 112,785
406.024,60 59.899.221,79
26,000 0,94802
57,270 15,619
11,454 7,289
7,289 5,206
104,127 3,866
107,993 388.774,10
60.287.995,89 26,500
0,90632 54,750
14,932 10,950
6,968 6,968
4,977 99,546
3,866 103,412
372.282,53 60.660.278,41
27,000 0,86644
52,341 14,275
10,468 6,662
6,662 4,758
95,166 3,866
99,032 356.516,49
61.016.794,90 27,500
0,82832 50,039
13,647 10,008
6,369 6,369
4,549 90,979
3,866 94,846
341.444,07 61.358.238,97
28,000 0,79188
47,837 13,047
9,567 6,088
6,088 4,349
86,977 3,866
90,843 327.034,75
61.685.273,72
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif
jam m
3
dt 60,41
16,48 12,08
7,69 7,69
5,49 m
3
dt m
3
dt m
3
dt m
3
m
3
28,500 0,75704
45,733 12,473
9,147 5,821
5,821 4,158
83,150 3,866
87,016 313.259,36
61.998.533,08 29,000
0,72374 43,721
11,924 8,744
5,564 5,564
3,975 79,492
3,866 83,358
300.090,01 62.298.623,09
29,436 0,69589
42,039 11,465
8,408 5,350
5,350 3,822
76,434 3,866
80,300 289.080,12
62.587.703,21 29,500
0,69290 41,857
11,416 8,371
5,327 5,327
3,805 76,105
3,866 79,971
287.894,21 62.875.597,42
30,000 0,66990
40,469 11,037
8,094 5,151
5,151 3,679
73,579 3,866
77,445 278.803,49
63.154.400,91 30,500
0,64768 39,126
10,671 7,825
4,980 4,980
3,557 71,138
3,866 75,004
270.014,41 63.424.415,33
31,000 0,62619
37,828 10,317
7,566 4,814
4,814 3,439
68,778 3,866
72,644 261.516,96
63.685.932,28 31,500
0,60541 36,572
9,974 7,314
4,655 4,655
3,325 66,495
3,866 70,362
253.301,46 63.939.233,74
32,000 0,58532
35,359 9,643
7,072 4,500
4,500 3,214
64,289 3,866
68,155 245.358,55
64.184.592,29 32,500
0,56590 34,186
9,323 6,837
4,351 4,351
3,108 62,156
3,866 66,022
237.679,19 64.422.271,48
33,000 0,54712
33,051 9,014
6,610 4,207
4,207 3,005
60,094 3,866
63,960 230.254,65
64.652.526,13 33,500
0,52897 31,955
8,715 6,391
4,067 4,067
2,905 58,100
3,866 61,966
223.076,45 64.875.602,58
34,000 0,51142
30,894 8,426
6,179 3,932
3,932 2,809
56,172 3,866
60,038 216.136,43
65.091.739,00 34,500
0,49445 29,869
8,146 5,974
3,802 3,802
2,715 54,308
3,866 58,174
209.426,68 65.301.165,69
35,000 0,47804
28,878 7,876
5,776 3,675
3,675 2,625
52,506 3,866
56,372 202.939,57
65.504.105,26 35,500
0,46218 27,920
7,615 5,584
3,553 3,553
2,538 50,764
3,866 54,630
196.667,70 65.700.772,96
36,000 0,44684
26,994 7,362
5,399 3,436
3,436 2,454
49,079 3,866
52,946 190.603,94
65.891.376,90
Grafik 4.3 Periode Ulang 10 Tahun
Tabel 4.28 Hidrograf Nakayasu T = 20 tahun
Debit Puncak Qp = 7,732 dtk
Base Flow Qb = 3,866 dtk
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 64,00
17,45 12,80
8,14 8,14
5,82 m
3
dt m
3
dt m
3
dt m
3
m
3
0,000 0,00000
0,000 0,000
3,866 3,866
13.917,89 13.917,89
0,500 0,01311
0,839 0,839
3,866 4,705
16.937,80 30.855,69
1,000 0,06918
4,428 4,428
3,866 8,294
29.857,08 60.712,77
1,500 0,18307
11,716 11,716
3,866 15,582
56.095,81 116.808,58
2,000 0,36516
23,369 6,373
29,742 3,866
33,608 120.989,29
237.797,86 2,500
0,62383 39,923
10,888 50,811
3,866 54,677
196.836,34 434.634,20
3,000 0,96627
61,838 16,865
78,703 3,866
82,569 297.247,84
731.882,04 3,500
1,39885 89,521
24,415 17,904
131,841 3,866
135,707 488.544,15
1.220.426,19 4,000
1,92732 123,341
33,638 24,668
181,648 3,866
185,514 667.849,66
1.888.275,86 4,500
2,55693 163,634
44,627 32,727
20,826 261,814
3,866 265,681
956.449,98 2.844.725,83
5,000 3,29259
210,713 57,467
42,143 26,818
337,141 3,866
341,007 1.227.625,63
4.072.351,47 5,500
4,13885 264,871
72,237 52,974
33,711 423,793
3,866 427,659
1.539.573,70 5.611.925,16
6,000 5,10002
326,382 89,013
65,276 41,540
41,540 563,751
3,866 567,617
2.043.422,52 7.655.347,68
6,500 6,18018
395,508 107,866
79,102 50,337
50,337 683,151
3,866 687,017
2.473.260,88 10.128.608,56
7,000 7,38320
472,497 128,863
94,499 60,136
60,136 42,954
859,085 3,866
862,951 3.106.624,59
13.235.233,15 7,136
7,73216 494,829
134,953 98,966
62,978 62,978
44,984 899,689
3,866 903,555
3.252.799,39 16.488.032,54
7,500 7,36146
471,105 128,483
94,221 59,959
59,959 42,828
856,555 3,866
860,421 3.097.516,59
19.585.549,13 8,000
6,88104 440,361
120,098 88,072
56,046 56,046
40,033 800,656
3,866 804,522
2.896.279,78 22.481.828,91
8,500 6,43198
411,623 112,261
82,325 52,388
52,388 37,420
748,405 3,866
752,271 2.708.175,77
25.190.004,68 9,000
6,01223 384,760
104,935 76,952
48,969 48,969
34,978 699,564
3,866 703,430
2.532.347,48 27.722.352,16
9,500 5,61987
359,650 98,086
71,930 45,774
45,774 32,695
653,910 3,866
657,776 2.367.993,82
30.090.345,99 10,000
5,25312 336,180
91,685 67,236
42,786 42,786
30,562 611,236
3,866 615,102
2.214.365,95 32.304.711,93
10,500 4,91030
314,240 85,702
62,848 39,994
39,994 28,567
571,346 3,866
575,212 2.070.763,88
34.375.475,81 11,000
4,58985 293,733
80,109 58,747
37,384 37,384
26,703 534,060
3,866 537,926
1.936.533,34 36.312.009,15
11,500 4,29031
274,564 74,881
54,913 34,944
34,944 24,960
499,207 3,866
503,073 1.811.062,73
38.123.071,88 12,000
4,01033 256,646
69,994 51,329
32,664 32,664
23,331 466,628
3,866 470,495
1.693.780,38 39.816.852,27
12,500 3,74861
239,897 65,426
47,979 30,532
30,532 21,809
436,176 3,866
440,042 1.584.151,93
41.401.004,19 13,000
3,50397 224,241
61,157 44,848
28,540 28,540
20,386 407,711
3,866 411,577
1.481.677,87 42.882.682,06
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 64,00
17,45 12,80
8,14 8,14
5,82 m
3
dt m
3
dt m
3
dt m
3
m
3
13,500 3,27530
209,607 57,166
41,921 26,677
26,677 19,055
381,104 3,866
384,970 1.385.891,30
44.268.573,36 14,000
3,06156 195,928
53,435 39,186
24,936 24,936
17,812 356,233
3,866 360,099
1.296.355,80 45.564.929,16
14,500 2,86176
183,142 49,948
36,628 23,309
23,309 16,649
332,985 3,866
336,851 1.212.663,42
46.777.592,58 15,000
2,67500 171,190
46,688 34,238
21,788 21,788
15,563 311,254
3,866 315,120
1.134.432,84 47.912.025,41
15,500 2,50043
160,018 43,641
32,004 20,366
20,366 14,547
290,942 3,866
294,808 1.061.307,61
48.973.333,02 16,000
2,33725 149,575
40,793 29,915
19,037 19,037
13,598 271,955
3,866 275,821
992.954,56 49.966.287,59
16,056 2,31965
148,449 40,486
29,690 18,893
18,893 13,495
269,907 3,866
273,773 985.582,34
50.951.869,93 16,500
2,22880 142,635
38,900 28,527
18,154 18,154
12,967 259,336
3,866 263,202
947.527,21 51.899.397,14
17,000 2,13074
136,360 37,189
27,272 17,355
17,355 12,396
247,927 3,866
251,793 906.453,63
52.805.850,77 17,500
2,03700 130,361
35,553 26,072
16,591 16,591
11,851 237,019
3,866 240,885
867.187,05 53.673.037,82
18,000 1,94739
124,625 33,989
24,925 15,861
15,861 11,330
226,592 3,866
230,458 829.647,99
54.502.685,81 18,500
1,86171 119,143
32,493 23,829
15,164 15,164
10,831 216,623
3,866 220,489
793.760,43 55.296.446,24
19,000 1,77981
113,901 31,064
22,780 14,496
14,496 10,355
207,093 3,866
210,959 759.451,72
56.055.897,97 19,500
1,70151 108,890
29,697 21,778
13,859 13,859
9,899 197,982
3,866 201,848
726.652,41 56.782.550,38
20,000 1,62665
104,099 28,391
20,820 13,249
13,249 9,464
189,272 3,866
193,138 695.296,08
57.477.846,46 20,500
1,55509 99,520
27,142 19,904
12,666 12,666
9,047 180,945
3,866 184,811
665.319,26 58.143.165,71
21,000 1,48667
95,141 25,948
19,028 12,109
12,109 8,649
172,984 3,866
176,850 636.661,24
58.779.826,96 21,500
1,42127 90,956
24,806 18,191
11,576 11,576
8,269 165,374
3,866 169,240
609.264,02 59.389.090,98
22,000 1,35874
86,954 23,715
17,391 11,067
11,067 7,905
158,098 3,866
161,964 583.072,12
59.972.163,10 22,500
1,29896 83,129
22,671 16,626
10,580 10,580
7,557 151,143
3,866 155,009
558.032,52 60.530.195,63
23,000 1,24181
79,471 21,674
15,894 10,115
10,115 7,225
144,494 3,866
148,360 534.094,53
61.064.290,15 23,500
1,18718 75,975
20,720 15,195
9,670 9,670
6,907 138,137
3,866 142,003
511.209,67 61.575.499,82
24,000 1,13495
72,633 19,809
14,527 9,244
9,244 6,603
132,059 3,866
135,925 489.331,61
62.064.831,43 24,500
1,08502 69,437
18,937 13,887
8,837 8,837
6,312 126,249
3,866 130,116
468.416,07 62.533.247,50
25,000 1,03729
66,382 18,104
13,276 8,449
8,449 6,035
120,695 3,866
124,561 448.420,69
62.981.668,20 25,500
0,99165 63,462
17,308 12,692
8,077 8,077
5,769 115,385
3,866 119,251
429.305,00 63.410.973,20
26,000 0,94802
60,670 16,546
12,134 7,722
7,722 5,515
110,309 3,866
114,175 411.030,30
63.822.003,50 26,500
0,90632 58,001
15,818 11,600
7,382 7,382
5,273 105,456
3,866 109,322
393.559,57 64.215.563,07
27,000 0,86644
55,449 15,122
11,090 7,057
7,057 5,041
100,817 3,866
104,683 376.857,47
64.592.420,54 27,500
0,82832 53,010
14,457 10,602
6,747 6,747
4,819 96,381
3,866 100,247
360.890,16 64.953.310,69
28,000 0,79188
50,678 13,821
10,136 6,450
6,450 4,607
92,141 3,866
96,007 345.625,32
65.298.936,01 28,500
0,75704 48,448
13,213 9,690
6,166 6,166
4,404 88,087
3,866 91,953
331.032,05 65.629.968,06
29,000 0,72374
46,317 12,632
9,263 5,895
5,895 4,211
84,212 3,866
88,078 317.080,80
65.947.048,86 29,436
0,69589 44,535
12,146 8,907
5,668 5,668
4,049 80,972
3,866 84,838
305.417,23 66.252.466,09
29,500 0,69290
44,343 12,093
8,869 5,644
5,644 4,031
80,623 3,866
84,489 304.160,90
66.556.626,99
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 64,00
17,45 12,80
8,14 8,14
5,82 m
3
dt m
3
dt m
3
dt m
3
m
3
30,000 0,66990
42,871 11,692
8,574 5,456
5,456 3,897
77,948 3,866
81,814 294.530,44
66.851.157,43 30,500
0,64768 41,449
11,304 8,290
5,275 5,275
3,768 75,362
3,866 79,228
285.219,53 67.136.376,96
31,000 0,62619
40,074 10,929
8,015 5,100
5,100 3,643
72,861 3,866
76,727 276.217,56
67.412.594,53 31,500
0,60541 38,744
10,567 7,749
4,931 4,931
3,522 70,443
3,866 74,310
267.514,29 67.680.108,81
32,000 0,58532
37,458 10,216
7,492 4,767
4,767 3,405
68,106 3,866
71,972 259.099,79
67.939.208,60 32,500
0,56590 36,215
9,877 7,243
4,609 4,609
3,292 65,846
3,866 69,712
250.964,49 68.190.173,09
33,000 0,54712
35,014 9,549
7,003 4,456
4,456 3,183
63,661 3,866
67,528 243.099,13
68.433.272,22 33,500
0,52897 33,852
9,232 6,770
4,308 4,308
3,077 61,549
3,866 65,415
235.494,74 68.668.766,96
34,000 0,51142
32,729 8,926
6,546 4,165
4,165 2,975
59,507 3,866
63,373 228.142,67
68.896.909,63 34,500
0,49445 31,643
8,630 6,329
4,027 4,027
2,877 57,532
3,866 61,398
221.034,55 69.117.944,18
35,000 0,47804
30,593 8,344
6,119 3,894
3,894 2,781
55,623 3,866
59,490 214.162,28
69.332.106,46 35,500
0,46218 29,578
8,067 5,916
3,764 3,764
2,689 53,778
3,866 57,644
207.518,04 69.539.624,50
36,000 0,44684
28,596 7,799
5,719 3,640
3,640 2,600
51,993 3,866
55,860 201.094,26
69.740.718,76
Grafik 4.4 Periode Ulang 20 Tahun
Tabel 4.29 Hidrograf Nakayasu T = 25 tahun
Debit Puncak Qp = 7,732 dtk
Base Flow Qb = 3,866 dtk
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 65,87
17,97 13,17
8,38 8,38
5,99 m
3
dt m
3
dt m
3
dt m
3
m
3
0,000 0,00000
0,000 0,000
3,866 3,866
13.917,89 13.917,89
0,500 0,01311
0,863 0,863
3,866 4,730
17.026,38 30.944,27
1,000 0,06918
4,557 4,557
3,866 8,423
30.324,60 61.268,87
1,500 0,18307
12,060 12,060
3,866 15,926
57.332,95 118.601,82
2,000 0,36516
24,054 6,560
30,614 3,866
34,481 124.129,86
242.731,68 2,500
0,62383 41,094
11,207 52,301
3,866 56,167
202.201,62 444.933,30
3,000 0,96627
63,652 17,360
81,011 3,866
84,877 305.558,36
750.491,66 3,500
1,39885 92,147
25,131 18,429
135,708 3,866
139,574 502.465,69
1.252.957,35 4,000
1,92732 126,959
34,625 25,392
186,976 3,866
190,842 687.030,51
1.939.987,87 4,500
2,55693 168,434
45,936 33,687
21,437 269,494
3,866 273,360
984.095,93 2.924.083,80
5,000 3,29259
216,894 59,153
43,379 27,605
347,030 3,866
350,896 1.263.225,60
4.187.309,40 5,500
4,13885 272,640
74,356 54,528
34,700 436,224
3,866 440,090
1.584.323,59 5.771.632,99
6,000 5,10002
335,956 91,624
67,191 42,758
42,758 580,287
3,866 584,153
2.102.951,09 7.874.584,08
6,500 6,18018
407,109 111,030
81,422 51,814
51,814 703,189
3,866 707,055
2.545.397,29 10.419.981,37
7,000 7,38320
486,356 132,643
97,271 61,900
61,900 44,214
884,284 3,866
888,150 3.197.338,56
13.617.319,93 7,136
7,73216 509,343
138,912 101,869
64,826 64,826
46,304 926,079
3,866 929,945
3.347.800,90 16.965.120,83
7,500 7,36146
484,924 132,252
96,985 61,718
61,718 44,084
881,679 3,866
885,545 3.187.963,41
20.153.084,25 8,000
6,88104 453,277
123,621 90,655
57,690 57,690
41,207 824,141
3,866 828,007
2.980.824,01 23.133.908,26
8,500 6,43198
423,696 115,554
84,739 53,925
53,925 38,518
770,357 3,866
774,223 2.787.202,60
25.921.110,86 9,000
6,01223 396,046
108,012 79,209
50,406 50,406
36,004 720,083
3,866 723,949
2.606.217,00 28.527.327,86
9,500 5,61987
370,200 100,964
74,040 47,116
47,116 33,655
673,090 3,866
676,956 2.437.042,59
30.964.370,45 10,000
5,25312 346,040
94,375 69,208
44,041 44,041
31,458 629,164
3,866 633,030
2.278.908,56 33.243.279,01
10,500 4,91030
323,458 88,216
64,692 41,167
41,167 29,405
588,105 3,866
591,971 2.131.094,42
35.374.373,43 11,000
4,58985 302,349
82,459 60,470
38,481 38,481
27,486 549,725
3,866 553,591
1.992.926,69 37.367.300,12
11,500 4,29031
282,617 77,077
56,523 35,969
35,969 25,692
513,849 3,866
517,716 1.863.775,83
39.231.075,95 12,000
4,01033 264,173
72,047 52,835
33,622 33,622
24,016 480,315
3,866 484,182
1.743.053,40 40.974.129,35
12,500 3,74861
246,933 67,345
49,387 31,428
31,428 22,448
448,970 3,866
452,836 1.630.209,37
42.604.338,73 13,000
3,50397 230,818
62,950 46,164
29,377 29,377
20,983 419,670
3,866 423,536
1.524.729,58 44.129.068,31
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 65,87
17,97 13,17
8,38 8,38
5,99 m
3
dt m
3
dt m
3
dt m
3
m
3
13,500 3,27530
215,755 58,842
43,151 27,460
27,460 19,614
392,282 3,866
396,148 1.426.133,45
45.555.201,75 14,000
3,06156 201,675
55,002 40,335
25,668 25,668
18,334 366,682
3,866 370,548
1.333.971,73 46.889.173,48
14,500 2,86176
188,514 51,413
37,703 23,993
23,993 17,138
342,752 3,866
346,618 1.247.824,52
48.136.998,00 15,000
2,67500 176,211
48,058 35,242
22,427 22,427
16,019 320,384
3,866 324,250
1.167.299,31 49.304.297,31
15,500 2,50043
164,711 44,921
32,942 20,963
20,963 14,974
299,475 3,866
303,341 1.092.029,20
50.396.326,51 16,000
2,33725 153,962
41,990 30,792
19,595 19,595
13,997 279,931
3,866 283,798
1.021.671,26 51.417.997,77
16,056 2,31965
152,803 41,674
30,561 19,448
19,448 13,891
277,824 3,866
281,690 1.014.082,79
52.432.080,56 16,500
2,22880 146,818
40,041 29,364
18,686 18,686
13,347 266,943
3,866 270,809
974.911,45 53.406.992,01
17,000 2,13074
140,359 38,280
28,072 17,864
17,864 12,760
255,199 3,866
259,065 932.633,11
54.339.625,13 17,500
2,03700 134,184
36,596 26,837
17,078 17,078
12,199 243,971
3,866 247,837
892.214,79 55.231.839,91
18,000 1,94739
128,281 34,986
25,656 16,327
16,327 11,662
233,238 3,866
237,104 853.574,64
56.085.414,55 18,500
1,86171 122,637
33,447 24,527
15,608 15,608
11,149 222,977
3,866 226,843
816.634,44 56.902.049,00
19,000 1,77981
117,242 31,975
23,448 14,922
14,922 10,658
213,167 3,866
217,033 781.319,41
57.683.368,41 19,500
1,70151 112,084
30,568 22,417
14,265 14,265
10,189 203,789
3,866 207,655
747.558,04 58.430.926,45
20,000 1,62665
107,153 29,224
21,431 13,638
13,638 9,741
194,823 3,866
198,689 715.281,98
59.146.208,43 20,500
1,55509 102,439
27,938 20,488
13,038 13,038
9,313 186,252
3,866 190,118
684.425,89 59.830.634,31
21,000 1,48667
97,932 26,709
19,586 12,464
12,464 8,903
178,058 3,866
181,924 654.927,29
60.485.561,60 21,500
1,42127 93,624
25,534 18,725
11,916 11,916
8,511 170,225
3,866 174,091
626.726,46 61.112.288,06
22,000 1,35874
89,505 24,410
17,901 11,391
11,391 8,137
162,736 3,866
166,602 599.766,32
61.712.054,38 22,500
1,29896 85,567
23,336 17,113
10,890 10,890
7,779 155,576
3,866 159,442
573.992,27 62.286.046,65
23,000 1,24181
81,802 22,310
16,360 10,411
10,411 7,437
148,732 3,866
152,598 549.352,13
62.835.398,78 23,500
1,18718 78,204
21,328 15,641
9,953 9,953
7,109 142,188
3,866 146,054
525.796,02 63.361.194,80
24,000 1,13495
74,763 20,390
14,953 9,515
9,515 6,797
135,933 3,866
139,799 503.276,25
63.864.471,04 24,500
1,08502 71,474
19,493 14,295
9,097 9,097
6,498 129,953
3,866 133,819
481.747,22 64.346.218,26
25,000 1,03729
68,329 18,635
13,666 8,696
8,696 6,212
124,235 3,866
128,101 461.165,35
64.807.383,61 25,500
0,99165 65,323
17,815 13,065
8,314 8,314
5,938 118,770
3,866 122,636
441.488,96 65.248.872,58
26,000 0,94802
62,449 17,032
12,490 7,948
7,948 5,677
113,545 3,866
117,411 422.678,23
65.671.550,81 26,500
0,90632 59,702
16,282 11,940
7,598 7,598
5,427 108,549
3,866 112,415
404.695,06 66.076.245,87
27,000 0,86644
57,076 15,566
11,415 7,264
7,264 5,189
103,774 3,866
107,640 387.503,06
66.463.748,93 27,500
0,82832 54,565
14,881 10,913
6,945 6,945
4,960 99,208
3,866 103,074
371.067,40 66.834.816,33
28,000 0,79188
52,164 14,227
10,433 6,639
6,639 4,742
94,844 3,866
98,710 355.354,82
67.190.171,15 28,500
0,75704 49,869
13,601 9,974
6,347 6,347
4,534 90,671
3,866 94,537
340.333,51 67.530.504,66
29,000 0,72374
47,675 13,002
9,535 6,068
6,068 4,334
86,682 3,866
90,548 325.973,05
67.856.477,70 29,436
0,69589 45,841
12,502 9,168
5,834 5,834
4,167 83,347
3,866 87,213
313.967,36 68.170.445,06
29,500 0,69290
45,643 12,448
9,129 5,809
5,809 4,149
82,988 3,866
86,854 312.674,19
68.483.119,25
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 65,87
17,97 13,17
8,38 8,38
5,99 m
3
dt m
3
dt m
3
dt m
3
m
3
30,000 0,66990
44,129 12,035
8,826 5,616
5,616 4,012
80,234 3,866
84,100 302.761,25
68.785.880,50 30,500
0,64768 42,665
11,636 8,533
5,430 5,430
3,879 77,572
3,866 81,438
293.177,24 69.079.057,74
31,000 0,62619
41,249 11,250
8,250 5,250
5,250 3,750
74,998 3,866
78,864 283.911,23
69.362.968,97 31,500
0,60541 39,880
10,876 7,976
5,076 5,076
3,625 72,510
3,866 76,376
274.952,67 69.637.921,64
32,000 0,58532
38,557 10,516
7,711 4,907
4,907 3,505
70,104 3,866
73,970 266.291,36
69.904.213,00 32,500
0,56590 37,278
10,167 7,456
4,744 4,744
3,389 67,778
3,866 71,644
257.917,44 70.162.130,44
33,000 0,54712
36,041 9,829
7,208 4,587
4,587 3,276
65,529 3,866
69,395 249.821,37
70.411.951,81 33,500
0,52897 34,845
9,503 6,969
4,435 4,435
3,168 63,354
3,866 67,221
241.993,94 70.653.945,75
34,000 0,51142
33,689 9,188
6,738 4,288
4,288 3,063
61,252 3,866
65,118 234.426,22
70.888.371,98 34,500
0,49445 32,571
8,883 6,514
4,145 4,145
2,961 59,220
3,866 63,086
227.109,61 71.115.481,59
35,000 0,47804
31,490 8,588
6,298 4,008
4,008 2,863
57,255 3,866
61,121 220.035,77
71.335.517,35 35,500
0,46218 30,445
8,303 6,089
3,875 3,875
2,768 55,355
3,866 59,221
213.196,64 71.548.713,99
36,000 0,44684
29,435 8,028
5,887 3,746
3,746 2,676
53,518 3,866
57,385 206.584,44
71.755.298,43
Grafik 4.5 Periode Ulang 25 Tahun
Tabel 4.30 Hidrograf Nakayasu T = 50 tahun
Debit Puncak Qp = 7,732 dtk
Base Flow Qb = 3,866 dtk
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 69,30
18,90 13,86
8,82 8,82
6,30 m
3
dt m
3
dt m
3
dt m
3
m
3
0,000 0,00000
0,000 0,000
3,866 3,866
13.917,89 13.917,89
0,500 0,01311
0,908 0,908
3,866 4,774
17.188,04 31.105,93
1,000 0,06918
4,794 4,794
3,866 8,661
31.177,84 62.283,77
1,500 0,18307
12,687 12,687
3,866 16,553
59.590,79 121.874,56
2,000 0,36516
25,305 6,901
32,207 3,866
36,073 129.861,53
251.736,09 2,500
0,62383 43,231
11,790 55,021
3,866 58,887
211.993,48 463.729,57
3,000 0,96627
66,962 18,262
85,224 3,866
89,090 320.725,37
784.454,94 3,500
1,39885 96,939
26,438 19,388
142,765 3,866
146,631 527.873,04
1.312.327,98 4,000
1,92732 133,561
36,426 26,712
196,700 3,866
200,566 722.036,31
2.034.364,28 4,500
2,55693 177,193
48,325 35,439
22,552 283,509
3,866 287,375
1.034.550,87 3.068.915,15
5,000 3,29259
228,173 62,229
45,635 29,040
365,078 3,866
368,944 1.328.196,91
4.397.112,06 5,500
4,13885 286,819
78,223 57,364
36,504 458,910
3,866 462,776
1.665.993,88 6.063.105,94
6,000 5,10002
353,427 96,389
70,685 44,982
44,982 610,465
3,866 614,331
2.211.593,05 8.274.698,99
6,500 6,18018
428,281 116,804
85,656 54,509
54,509 739,759
3,866 743,625
2.677.049,04 10.951.748,03
7,000 7,38320
511,649 139,541
102,330 65,119
65,119 46,514
930,271 3,866
934,138 3.362.895,07
14.314.643,10 7,136
7,73216 535,832
146,136 107,166
68,197 68,197
48,712 974,240
3,866 978,106
3.521.182,33 17.835.825,43
7,500 7,36146
510,142 139,130
102,028 64,927
64,927 46,377
927,532 3,866
931,398 3.353.032,36
21.188.857,79 8,000
6,88104 476,850
130,050 95,370
60,690 60,690
43,350 867,001
3,866 870,867
3.135.120,50 24.323.978,28
8,500 6,43198
445,731 121,563
89,146 56,729
56,729 40,521
810,420 3,866
814,286 2.931.429,64
27.255.407,92 9,000
6,01223 416,642
113,630 83,328
53,027 53,027
37,877 757,532
3,866 761,398
2.741.031,73 29.996.439,65
9,500 5,61987
389,452 106,214
77,890 49,567
49,567 35,405
708,095 3,866
711,961 2.563.059,26
32.559.498,91 10,000
5,25312 364,036
99,283 72,807
46,332 46,332
33,094 661,884
3,866 665,750
2.396.701,33 34.956.200,24
10,500 4,91030
340,279 92,803
68,056 43,308
43,308 30,934
618,689 3,866
622,556 2.241.199,99
37.197.400,24 11,000
4,58985 318,072
86,747 63,614
40,482 40,482
28,916 578,314
3,866 582,180
2.095.846,73 39.293.246,96
11,500 4,29031
297,315 81,086
59,463 37,840
37,840 27,029
540,573 3,866
544,439 1.959.979,27
41.253.226,23 12,000
4,01033 277,912
75,794 55,582
35,371 35,371
25,265 505,295
3,866 509,161
1.832.978,57 43.086.204,80
12,500 3,74861
259,775 70,848
51,955 33,062
33,062 23,616
472,319 3,866
476,185 1.714.265,99
44.800.470,79 13,000
3,50397 242,822
66,224 48,564
30,905 30,905
22,075 441,495
3,866 445,361
1.603.300,63 46.403.771,43
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 69,30
18,90 13,86
8,82 8,82
6,30 m
3
dt m
3
dt m
3
dt m
3
m
3
13,500 3,27530
226,976 61,902
45,395 28,888
28,888 20,634
412,683 3,866
416,549 1.499.576,92
47.903.348,35 14,000
3,06156 212,163
57,863 42,433
27,003 27,003
19,288 385,751
3,866 389,617
1.402.622,25 49.305.970,60
14,500 2,86176
198,317 54,087
39,663 25,240
25,240 18,029
360,577 3,866
364,443 1.311.994,89
50.617.965,49 15,000
2,67500 185,375
50,557 37,075
23,593 23,593
16,852 337,046
3,866 340,912
1.227.281,89 51.845.247,38
15,500 2,50043
173,277 47,257
34,655 22,053
22,053 15,752
315,050 3,866
318,916 1.148.097,30
52.993.344,68 16,000
2,33725 161,969
44,173 32,394
20,614 20,614
14,724 294,490
3,866 298,356
1.074.080,33 54.067.425,01
16,056 2,31965
160,750 43,841
32,150 20,459
20,459 14,614
292,272 3,866
296,138 1.066.097,22
55.133.522,24 16,500
2,22880 154,454
42,124 30,891
19,658 19,658
14,041 280,825
3,866 284,691
1.024.888,74 56.158.410,97
17,000 2,13074
147,659 40,271
29,532 18,793
18,793 13,424
268,470 3,866
272,337 980.411,68
57.138.822,66 17,500
2,03700 141,163
38,499 28,233
17,966 17,966
12,833 256,659
3,866 260,525
937.891,37 58.076.714,02
18,000 1,94739
134,952 36,805
26,990 17,176
17,176 12,268
245,368 3,866
249,234 897.241,71
58.973.955,73 18,500
1,86171 129,015
35,186 25,803
16,420 16,420
11,729 234,573
3,866 238,439
858.380,40 59.832.336,13
19,000 1,77981
123,339 33,638
24,668 15,698
15,698 11,213
224,253 3,866
228,119 821.228,78
60.653.564,91 19,500
1,70151 117,913
32,158 23,583
15,007 15,007
10,719 214,387
3,866 218,253
785.711,62 61.439.276,53
20,000 1,62665
112,725 30,743
22,545 14,347
14,347 10,248
204,955 3,866
208,821 751.757,02
62.191.033,55 20,500
1,55509 107,766
29,391 21,553
13,716 13,716
9,797 195,938
3,866 199,805
719.296,23 62.910.329,78
21,000 1,48667
103,025 28,098
20,605 13,112
13,112 9,366
187,318 3,866
191,184 688.263,53
63.598.593,31 21,500
1,42127 98,493
26,862 19,699
12,535 12,535
8,954 179,077
3,866 182,943
658.596,10 64.257.189,40
22,000 1,35874
94,159 25,680
18,832 11,984
11,984 8,560
171,199 3,866
175,065 630.233,86
64.887.423,27 22,500
1,29896 90,017
24,550 18,003
11,457 11,457
8,183 163,667
3,866 167,533
603.119,41 65.490.542,68
23,000 1,24181
86,057 23,470
17,211 10,953
10,953 7,823
156,467 3,866
160,333 577.197,84
66.067.740,52 23,500
1,18718 82,271
22,437 16,454
10,471 10,471
7,479 149,583
3,866 153,449
552.416,68 66.620.157,20
24,000 1,13495
78,651 21,450
15,730 10,010
10,010 7,150
143,002 3,866
146,868 528.725,75
67.148.882,95 24,500
1,08502 75,191
20,507 15,038
9,570 9,570
6,836 136,711
3,866 140,577
506.077,08 67.654.960,03
25,000 1,03729
71,883 19,604
14,377 9,149
9,149 6,535
130,696 3,866
134,562 484.424,83
68.139.384,86 25,500
0,99165 68,721
18,742 13,744
8,746 8,746
6,247 124,946
3,866 128,813
463.725,16 68.603.110,03
26,000 0,94802
65,697 17,917
13,139 8,361
8,361 5,972
119,450 3,866
123,316 443.936,16
69.047.046,19 26,500
0,90632 62,807
17,129 12,561
7,994 7,994
5,710 114,194
3,866 118,060
425.017,76 69.472.063,95
27,000 0,86644
60,044 16,376
12,009 7,642
7,642 5,459
109,170 3,866
113,037 406.931,67
69.878.995,62 27,500
0,82832 57,402
15,655 11,480
7,306 7,306
5,218 104,368
3,866 108,234
389.641,27 70.268.636,89
28,000 0,79188
54,877 14,966
10,975 6,984
6,984 4,989
99,776 3,866
103,642 373.111,54
70.641.748,43 28,500
0,75704 52,463
14,308 10,493
6,677 6,677
4,769 95,386
3,866 99,253
357.309,03 70.999.057,46
29,000 0,72374
50,154 13,678
10,031 6,383
6,383 4,559
91,190 3,866
95,056 342.201,74
71.341.259,20 29,436
0,69589 48,225
13,152 9,645
6,138 6,138
4,384 87,682
3,866 91,548
329.571,69 71.670.830,89
29,500 0,69290
48,017 13,096
9,603 6,111
6,111 4,365
87,304 3,866
91,170 328.211,26
71.999.042,16
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 69,30
18,90 13,86
8,82 8,82
6,30 m
3
dt m
3
dt m
3
dt m
3
m
3
30,000 0,66990
46,424 12,661
9,285 5,908
5,908 4,220
84,407 3,866
88,273 317.782,80
72.316.824,95 30,500
0,64768 44,883
12,241 8,977
5,712 5,712
4,080 81,606
3,866 85,472
307.700,36 72.624.525,31
31,000 0,62619
43,394 11,835
8,679 5,523
5,523 3,945
78,898 3,866
82,765 297.952,46
72.922.477,77 31,500
0,60541 41,954
11,442 8,391
5,340 5,340
3,814 76,281
3,866 80,147
288.528,00 73.211.005,78
32,000 0,58532
40,562 11,062
8,112 5,162
5,162 3,687
73,750 3,866
77,616 279.416,26
73.490.422,04 32,500
0,56590 39,216
10,695 7,843
4,991 4,991
3,565 71,302
3,866 75,169
270.606,85 73.761.028,88
33,000 0,54712
37,915 10,340
7,583 4,826
4,826 3,447
68,937 3,866
72,803 262.089,74
74.023.118,62 33,500
0,52897 36,657
9,997 7,331
4,665 4,665
3,332 66,649
3,866 70,515
253.855,23 74.276.973,85
34,000 0,51142
35,441 9,666
7,088 4,511
4,511 3,222
64,438 3,866
68,304 245.893,95
74.522.867,80 34,500
0,49445 34,265
9,345 6,853
4,361 4,361
3,115 62,300
3,866 66,166
238.196,83 74.761.064,62
35,000 0,47804
33,128 9,035
6,626 4,216
4,216 3,012
60,233 3,866
64,099 230.755,10
74.991.819,73 35,500
0,46218 32,029
8,735 6,406
4,076 4,076
2,912 58,234
3,866 62,100
223.560,30 75.215.380,03
36,000 0,44684
30,966 8,445
6,193 3,941
3,941 2,815
56,302 3,866
60,168 216.604,23
75.431.984,25
Grafik 4.6 Periode Ulang 50 Tahun
Tabel 4.31 Hidrograf Nakayasu T = 100 tahun
Debit Puncak Qp = 7,732 dtk
Base Flow Qb = 3,866 dtk
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 72,98
19,90 14,60
9,29 9,29
6,63 m
3
dt m
3
dt m
3
dt m
3
m
3
0,000 0,00000
0,000 0,000
3,866 3,866
13.917,89 13.917,89
0,500 0,01311
0,957 0,957
3,866 4,823
17.361,54 31.279,43
1,000 0,06918
5,049 5,049
3,866 8,915
32.093,57 63.373,00
1,500 0,18307
13,360 13,360
3,866 17,226
62.013,97 125.386,97
2,000 0,36516
26,648 7,268
33,915 3,866
37,781 136.012,93
261.399,90 2,500
0,62383 45,524
12,416 57,940
3,866 61,806
222.502,40 483.902,30
3,000 0,96627
70,515 19,231
89,746 3,866
93,612 337.003,07
820.905,37 3,500
1,39885 102,083
27,841 20,417
150,340 3,866
154,206 555.140,98
1.376.046,35 4,000
1,92732 140,648
38,358 28,130
207,135 3,866
211,002 759.605,60
2.135.651,96 4,500
2,55693 186,594
50,889 37,319
23,748 298,551
3,866 302,417
1.088.700,66 3.224.352,62
5,000 3,29259
240,279 65,531
48,056 30,581
384,447 3,866
388,313 1.397.926,12
4.622.278,74 5,500
4,13885 302,036
82,373 60,407
38,441 483,258
3,866 487,124
1.753.644,94 6.375.923,68
6,000 5,10002
372,178 101,503
74,436 47,368
47,368 642,854
3,866 646,720
2.328.190,93 8.704.114,61
6,500 6,18018
451,004 123,001
90,201 57,400
57,400 779,007
3,866 782,873
2.818.341,74 11.522.456,35
7,000 7,38320
538,795 146,944
107,759 68,574
68,574 48,981
979,627 3,866
983,493 3.540.575,41
15.063.031,75 7,136
7,73216 564,261
153,889 112,852
71,815 71,815
51,296 1025,929
3,866 1029,795
3.707.260,61 18.770.292,36
7,500 7,36146
537,208 146,511
107,442 68,372
68,372 48,837
976,742 3,866
980,608 3.530.189,42
22.300.481,78 8,000
6,88104 502,150
136,950 100,430
63,910 63,910
45,650 913,000
3,866 916,866
3.300.716,22 25.601.198,01
8,500 6,43198
469,379 128,013
93,876 59,739
59,739 42,671
853,417 3,866
857,283 3.086.218,53
28.687.416,54 9,000
6,01223 438,747
119,658 87,749
55,841 55,841
39,886 797,723
3,866 801,589
2.885.719,04 31.573.135,58
9,500 5,61987
410,115 111,849
82,023 52,196
52,196 37,283
745,663 3,866
749,529 2.698.304,22
34.271.439,79 10,000
5,25312 383,350
104,550 76,670
48,790 48,790
34,850 697,001
3,866 700,867
2.523.120,16 36.794.559,95
10,500 4,91030
358,333 97,727
71,667 45,606
45,606 32,576
651,514 3,866
655,380 2.359.368,68
39.153.928,63 11,000
4,58985 334,948
91,349 66,990
42,630 42,630
30,450 608,996
3,866 612,862
2.206.303,68 41.360.232,30
11,500 4,29031
313,089 85,388
62,618 39,848
39,848 28,463
569,253 3,866
573,119 2.063.227,76
43.423.460,06 12,000
4,01033 292,657
79,815 58,531
37,247 37,247
26,605 532,103
3,866 535,969
1.929.489,03 45.352.949,09
12,500 3,74861
273,558 74,607
54,712 34,816
34,816 24,869
497,378 3,866
501,244 1.804.478,13
47.157.427,22 13,000
3,50397 255,705
69,738 51,141
32,544 32,544
23,246 464,919
3,866 468,785
1.687.625,50 48.845.052,72
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 72,98
19,90 14,60
9,29 9,29
6,63 m
3
dt m
3
dt m
3
dt m
3
m
3
13,500 3,27530
239,018 65,187
47,804 30,420
30,420 21,729
434,578 3,866
438,444 1.578.398,71
50.423.451,44 14,000
3,06156 223,420
60,933 44,684
28,435 28,435
20,311 406,217
3,866 410,083
1.476.300,11 51.899.751,55
14,500 2,86176
208,839 56,956
41,768 26,580
26,580 18,985
379,707 3,866
383,573 1.380.864,50
53.280.616,04 15,000
2,67500 195,210
53,239 39,042
24,845 24,845
17,746 354,928
3,866 358,794
1.291.657,05 54.572.273,09
15,500 2,50043
182,471 49,765
36,494 23,224
23,224 16,588
331,765 3,866
335,631 1.208.271,31
55.780.544,40 16,000
2,33725 170,563
46,517 34,113
21,708 21,708
15,506 310,114
3,866 313,980
1.130.327,36 56.910.871,76
16,056 2,31965
169,278 46,167
33,856 21,544
21,544 15,389
307,779 3,866
311,645 1.121.920,71
58.032.792,46 16,500
2,22880 162,648
44,359 32,530
20,701 20,701
14,786 295,724
3,866 299,591
1.078.525,90 59.111.318,37
17,000 2,13074
155,493 42,407
31,099 19,790
19,790 14,136
282,714 3,866
286,580 1.031.689,11
60.143.007,48 17,500
2,03700 148,652
40,541 29,730
18,919 18,919
13,514 270,276
3,866 274,142
986.912,88 61.129.920,35
18,000 1,94739
142,112 38,758
28,422 18,087
18,087 12,919
258,386 3,866
262,252 944.106,54
62.074.026,89 18,500
1,86171 135,860
37,053 27,172
17,291 17,291
12,351 247,018
3,866 250,884
903.183,45 62.977.210,34
19,000 1,77981
129,883 35,423
25,977 16,531
16,531 11,808
236,151 3,866
240,017 864.060,74
63.841.271,09 19,500
1,70151 124,169
33,864 24,834
15,803 15,803
11,288 225,761
3,866 229,628
826.659,22 64.667.930,31
20,000 1,62665
118,706 32,374
23,741 15,108
15,108 10,791
215,829 3,866
219,695 790.903,15
65.458.833,45 20,500
1,55509 113,484
30,950 22,697
14,443 14,443
10,317 206,334
3,866 210,200
756.720,15 66.215.553,60
21,000 1,48667
108,491 29,588
21,698 13,808
13,808 9,863
197,256 3,866
201,123 724.041,01
66.939.594,61 21,500
1,42127 103,718
28,287 20,744
13,200 13,200
9,429 188,578
3,866 192,444
692.799,57 67.632.394,17
22,000 1,35874
99,155 27,042
19,831 12,620
12,620 9,014
180,282 3,866
184,148 662.932,57
68.295.326,75 22,500
1,29896 94,793
25,853 18,959
12,065 12,065
8,618 172,350
3,866 176,217
634.379,56 68.929.706,31
23,000 1,24181
90,622 24,715
18,124 11,534
11,534 8,238
164,768 3,866
168,634 607.082,72
69.536.789,03 23,500
1,18718 86,636
23,628 17,327
11,026 11,026
7,876 157,519
3,866 161,385
580.986,79 70.117.775,81
24,000 1,13495
82,824 22,588
16,565 10,541
10,541 7,529
150,589 3,866
154,455 556.038,93
70.673.814,75 24,500
1,08502 79,180
21,595 15,836
10,077 10,077
7,198 143,964
3,866 147,830
532.188,64 71.206.003,39
25,000 1,03729
75,697 20,645
15,139 9,634
9,634 6,882
137,630 3,866
141,497 509.387,63
71.715.391,01 25,500
0,99165 72,367
19,736 14,473
9,210 9,210
6,579 131,576
3,866 135,442
487.589,73 72.202.980,75
26,000 0,94802
69,183 18,868
13,837 8,805
8,805 6,289
125,787 3,866
129,653 466.750,82
72.669.731,57 26,500
0,90632 66,139
18,038 13,228
8,418 8,418
6,013 120,253
3,866 124,119
446.828,71 73.116.560,29
27,000 0,86644
63,229 17,244
12,646 8,047
8,047 5,748
114,963 3,866
118,829 427.783,06
73.544.343,34 27,500
0,82832 60,448
16,486 12,090
7,693 7,693
5,495 109,905
3,866 113,771
409.575,31 73.953.918,65
28,000 0,79188
57,788 15,760
11,558 7,355
7,355 5,253
105,070 3,866
108,936 392.168,60
74.346.087,25 28,500
0,75704 55,246
15,067 11,049
7,031 7,031
5,022 100,447
3,866 104,313
375.527,68 74.721.614,93
29,000 0,72374
52,815 14,404
10,563 6,722
6,722 4,801
96,028 3,866
99,894 359.618,88
75.081.233,81 29,436
0,69589 50,783
13,850 10,157
6,463 6,463
4,617 92,334
3,866 96,200
346.318,73 75.427.552,54
29,500 0,69290
50,565 13,790
10,113 6,435
6,435 4,597
91,936 3,866
95,802 344.886,13
75.772.438,67
Waktu Unit Hidrograf
Design Rainfall mm jam Limpasan
Base Total
Volume Volume
Qt 1
2 3
4 5
6 Langsung
Flow Debit
Kumulatif jam
m
3
dt 72,98
19,90 14,60
9,29 9,29
6,63 m
3
dt m
3
dt m
3
dt m
3
m
3
30,000 0,66990
48,887 13,333
9,777 6,222
6,222 4,444
88,885 3,866
92,751 333.904,38
76.106.343,06 30,500
0,64768 47,265
12,890 9,453
6,016 6,016
4,297 85,936
3,866 89,802
323.287,02 76.429.630,08
31,000 0,62619
45,696 12,463
9,139 5,816
5,816 4,154
83,084 3,866
86,951 313.021,94
76.742.652,02 31,500
0,60541 44,180
12,049 8,836
5,623 5,623
4,016 80,328
3,866 84,194
303.097,47 77.045.749,49
32,000 0,58532
42,714 11,649
8,543 5,436
5,436 3,883
77,662 3,866
81,528 293.502,30
77.339.251,80 32,500
0,56590 41,297
11,263 8,259
5,256 5,256
3,754 75,085
3,866 78,952
284.225,51 77.623.477,30
33,000 0,54712
39,927 10,889
7,985 5,082
5,082 3,630
72,594 3,866
76,460 275.256,52
77.898.733,82 33,500
0,52897 38,602
10,528 7,720
4,913 4,913
3,509 70,185
3,866 74,051
266.585,13 78.165.318,95
34,000 0,51142
37,321 10,178
7,464 4,750
4,750 3,393
67,857 3,866
71,723 258.201,46
78.423.520,41 34,500
0,49445 36,083
9,841 7,217
4,592 4,592
3,280 65,605
3,866 69,471
250.095,97 78.673.616,38
35,000 0,47804
34,886 9,514
6,977 4,440
4,440 3,171
63,428 3,866
67,294 242.259,42
78.915.875,80 35,500
0,46218 33,728
9,199 6,746
4,293 4,293
3,066 61,324
3,866 65,190
234.682,90 79.150.558,70
36,000 0,44684
32,609 8,893
6,522 4,150
4,150 2,964
59,289 3,866
63,155 227.357,77
79.377.916,47
Grafik 4.7 Periode Ulang 100 Tahun
Grafik 4.8 Hidrograf Nakayasu Berbagai Kala Ulang
Tabel 4.32 Debit Banjir Rencana Metode Nakayashu
Berdasarkan hasil perhitungan debit banjir rencana dengan menggunakan metode HSS Nakayashu untuk periode T = 2 tahun sampai dengan T =100 tahun.
Secara umum nilai debit banjir yang didapat terlihat berfluktuasi meningkat pada beberapa periode diatas, Dimana hasil perhitungan debit di atas memiliki
perbedaan yang cukup signifikan dibanding data debit pengukuran di lapangan, hal ini disebabkan oleh beberapa faktor di antaranya:
Human error, yaitu terjadinya kesalahan perhitungan dalam mengkalkulasikan
maupun menginput data terkait DAS Percut dalam analisis perhitungan debit banjir rencana, sama halnya dengan pengukuran debit sungai dilapangan semisal
pada pencatatan hasil pengukuran Pos Duga Air. Kesalahan alat juga dapat mempengaruhi hasil pengukuran debit banjir di
lapangan semisal terjadinya kerusakan pada alat pengukur tersebut, dan perlunya penempatan pos duga pada beberapa titik sehingga perhitungan debit banjir sungai
percut dapat lebih akurat. No
Periode Tahun Debit m
3
detik 1
2 700,413
2 5
794,030 3
10 853,132
4 20
903,555 5
25 929,945
6 50
976,106 7
100 1029.795
Faktor alam seperti gerusan pada penampang sungai serta proses sedimentasi juga mempengaruhi besarnya debit di lapangan, hal ini dapat menjadikan
perbedaan yang cukup signifikan di lapangan terhadap analisis perhitungan debit banjir rencana dengan menggunakan HSS Nakayashu.