19.01 m ANALISIS DAN PEMBAHASAN

Tabel 4.29 Hasil Perhitungan debit banjir Q 25tahun Hidrograf Satuan Sintetik Nakayasu Wakt u Unit Hidrograf Design Rainfall m m j am Limpasan Base Total Qt 1 2 3 4 5 6 Langsung Flow Debit j am m 3 dt 95.04

25.92 19.01

12.10 12.10

8.64 m

3 dt m 3 dt m 3 dt 0.00 0.000 0.00 0.00 7.78 7.78 1.00 0.003 0.26 0.00 0.26 7.78 8.04 2.00 0.014 1.37 0.07 0.00 1.44 7.78 9.22 3.00 0.038 3.62 0.37 0.05 0.00 4.04 7.78 11.83 4.00 0.076 7.21 0.99 0.27 0.03 0.00 8.51 7.78 16.29 5.00 0.130 12.33 1.97 0.72 0.17 0.03 0.00 15.22 7.78 23.01 6.00 0.201 19.09 3.36 1.44 0.46 0.17 0.02 24.55 7.78 32.34 7.00 0.291 27.64 5.21 2.47 0.92 0.46 0.12 36.81 7.78 44.60 8.00 0.401 38.08 7.54 3.82 1.57 0.92 0.33 52.25 7.78 60.04 9.00 0.532 50.52 10.39 5.53 2.43 1.57 0.66 71.09 7.78 78.87 10.00 0.684 65.05 13.78 7.62 3.52 2.43 1.12 93.51 7.78 101.30 11.00 0.860 81.77 17.74 10.10 4.85 3.52 1.74 119.72 7.78 127.50 12.00 1.060 100.76 22.30 13.01 6.43 4.85 2.51 149.86 7.78 157.65 13.00 1.285 122.10 27.48 16.35 8.28 6.43 3.46 184.11 7.78 191.90 14.00 1.535 145.87 33.30 20.15 10.41 8.28 4.59 222.61 7.78 230.39 15.00 1.811 172.14 39.78 24.42 12.82 10.41 5.91 265.49 7.78 273.28 16.00 2.115 200.98 46.95 29.17 15.54 12.82 7.43 312.90 7.78 320.69 17.00 2.446 232.46 54.81 34.43 18.57 15.54 9.16 364.97 7.78 372.75 18.00 2.806 266.64 63.40 40.20 21.91 18.57 11.10 421.81 7.78 429.59 19.00 3.194 303.58 72.72 46.49 25.58 21.91 13.26 483.54 7.78 491.33 20.00 3.613 343.35 82.80 53.33 29.59 25.58 15.65 550.29 7.78 558.07 21.00 4.062 386.01 93.64 60.72 33.94 29.59 18.27 622.16 7.78 629.94 22.00 4.541 431.60 105.27 68.67 38.64 33.94 21.13 699.25 7.78 707.04 23.00 5.053 480.19 117.71 77.20 43.70 38.64 24.24 781.68 7.78 789.46 24.00 5.596 531.83 130.96 86.32 49.13 43.70 27.60 869.54 7.78 877.33 25.00 6.172 586.58 145.05 96.04 54.93 49.13 31.21 962.93 7.78 970.72 26.00 6.781 644.47 159.98 106.37 61.12 54.93 35.09 1061.95 7.78 1069.74 27.00 7.424 705.57 175.77 117.32 67.69 61.12 39.24 1166.69 7.78 1174.48 28.00 8.101 769.92 192.43 128.89 74.66 67.69 43.65 1277.24 7.78 1285.03 29.00 8.813 837.57 209.98 141.11 82.02 74.66 48.35 1393.70 7.78 1401.48 30.00 9.560 908.57 228.43 153.98 89.80 82.02 53.33 1516.13 7.78 1523.92 31.00 10.343 982.96 247.79 167.51 97.99 89.80 58.59 1644.65 7.78 1652.43 32.00 11.162 1060.79 268.08 181.71 106.60 97.99 64.14 1779.32 7.78 1787.10 33.00 12.017 1142.09 289.31 196.59 115.64 106.60 69.99 1920.22 7.78 1928.01 34.00 12.910 1226.92 311.48 212.16 125.10 115.64 76.14 2067.45 7.78 2075.23 35.00 13.840 1315.32 334.62 228.42 135.01 125.10 82.60 2221.07 7.78 2228.85 36.75 15.560 1478.80 358.72 245.38 145.36 135.01 89.36 2452.64 7.78 2460.42 37.00 15.471 1470.38 403.31 263.06 156.15 145.36 96.44 2534.70 7.78 2542.48 38.00 15.121 1437.04 401.01 295.76 167.40 156.15 103.83 2561.20 7.78 2568.98 Universitas Sumatera Utara 39.00 14.778 1404.46 391.92 294.08 188.21 167.40 111.54 2557.61 7.78 2565.39 40.00 14.443 1372.62 383.03 287.41 187.14 188.21 119.57 2537.98 7.78 2545.77 41.00 14.115 1341.50 374.35 280.89 182.90 187.14 134.44 2501.21 7.78 2509.00 42.00 13.795 1311.08 365.86 274.52 178.75 182.90 133.67 2446.79 7.78 2454.57 43.00 13.483 1281.36 357.57 268.30 174.70 178.75 130.64 2391.31 7.78 2399.10 44.00 13.177 1252.31 349.46 262.22 170.74 174.70 127.68 2337.10 7.78 2344.88 45.00 12.878 1223.92 341.54 256.27 166.87 170.74 124.78 2284.11 7.78 2291.90 46.00 12.586 1196.17 333.80 250.46 163.08 166.87 121.95 2232.33 7.78 2240.11 47.00 12.301 1169.05 326.23 244.78 159.38 163.08 119.19 2181.71 7.78 2189.50 48.00 12.022 1142.54 318.83 239.23 155.77 159.38 116.49 2132.25 7.78 2140.04 49.00 11.749 1116.64 311.60 233.81 152.24 155.77 113.85 2083.91 7.78 2091.69 50.00 11.483 1091.32 304.54 228.51 148.79 152.24 111.27 2036.66 7.78 2044.45 51.00 11.223 1066.58 297.63 223.33 145.41 148.79 108.74 1990.49 7.78 1998.27 52.00 10.968 1042.40 290.89 218.26 142.12 145.41 106.28 1945.36 7.78 1953.14 53.00 10.720 1018.77 284.29 213.32 138.90 142.12 103.87 1901.25 7.78 1909.04 54.00 10.476 995.67 277.85 208.48 135.75 138.90 101.51 1858.15 7.78 1865.93 55.00 10.239 973.10 271.55 203.75 132.67 135.75 99.21 1816.02 7.78 1823.81 56.00 10.007 951.03 265.39 199.13 129.66 132.67 96.96 1774.85 7.78 1782.63 57.00 9.780 929.47 259.37 194.62 126.72 129.66 94.76 1734.61 7.78 1742.40 58.00 9.558 908.40 253.49 190.21 123.85 126.72 92.62 1695.28 7.78 1703.07 59.00 9.342 887.80 247.75 185.89 121.04 123.85 90.52 1656.85 7.78 1664.63 60.00 9.130 867.68 242.13 181.68 118.30 121.04 88.46 1619.28 7.78 1627.07 61.00 8.923 848.00 236.64 177.56 115.61 118.30 86.46 1582.57 7.78 1590.36 62.00 8.720 828.78 231.27 173.54 112.99 115.61 84.50 1546.69 7.78 1554.48 63.00 8.523 809.99 226.03 169.60 110.43 112.99 82.58 1511.63 7.78 1519.41 64.00 8.330 791.62 220.91 165.76 107.93 110.43 80.71 1477.35 7.78 1485.14 65.00 8.141 773.68 215.90 162.00 105.48 107.93 78.88 1443.86 7.78 1451.65 66.00 7.956 756.14 211.00 158.32 103.09 105.48 77.09 1411.13 7.78 1418.91 67.00 7.776 738.99 206.22 154.74 100.75 103.09 75.34 1379.13 7.78 1386.92 68.00 7.599 722.24 201.54 151.23 98.47 100.75 73.64 1347.86 7.78 1355.65 69.00 7.427 705.86 196.97 147.80 96.24 98.47 71.97 1317.31 7.78 1325.09 70.00 7.259 689.86 192.51 144.45 94.05 96.24 70.33 1287.44 7.78 1295.23 71.00 7.094 674.22 188.14 141.17 91.92 94.05 68.74 1258.25 7.78 1266.04 72.00 6.933 658.93 183.88 137.97 89.84 91.92 67.18 1229.72 7.78 1237.51 73.00 6.776 644.00 179.71 134.84 87.80 89.84 65.66 1201.84 7.78 1209.63 74.00 6.623 629.39 175.64 131.79 85.81 87.80 64.17 1174.60 7.78 1182.38 75.00 6.472 615.13 171.65 128.80 83.86 85.81 62.71 1147.97 7.78 1155.75 76.00 6.326 601.18 167.76 125.88 81.96 83.86 61.29 1121.94 7.78 1129.72 77.00 6.182 587.55 163.96 123.03 80.10 81.96 59.90 1096.50 7.78 1104.29 78.00 6.042 574.23 160.24 120.24 78.29 80.10 58.55 1071.64 7.78 1079.43 79.00 5.905 561.21 156.61 117.51 76.51 78.29 57.22 1047.35 7.78 1055.13 80.00 5.771 548.49 153.06 114.85 74.78 76.51 55.92 1023.60 7.78 1031.39 81.00 5.640 536.05 149.59 112.24 73.08 74.78 54.65 1000.40 7.78 1008.18 82.00 5.512 523.90 146.20 109.70 71.43 73.08 53.41 977.71 7.78 985.50 Universitas Sumatera Utara 83.00 5.387 512.02 142.88 107.21 69.81 71.43 52.20 955.55 7.78 963.33 84.00 5.265 500.41 139.64 104.78 68.22 69.81 51.02 933.88 7.78 941.67 85.00 5.146 489.07 136.48 102.40 66.68 68.22 49.86 912.71 7.78 920.50 86.00 5.029 477.98 133.38 100.08 65.17 66.68 48.73 892.02 7.78 899.80 87.00 4.915 467.14 130.36 97.81 63.69 65.17 47.63 871.79 7.78 879.58 88.00 4.804 456.55 127.40 95.60 62.24 63.69 46.55 852.03 7.78 859.81 89.25 4.668 443.64 124.51 93.43 60.83 62.24 45.49 830.15 7.78 837.94 90.00 4.615 438.59 120.99 91.31 59.45 60.83 44.46 815.64 7.78 823.42 91.00 4.545 431.93 119.61 88.73 58.11 59.45 43.45 801.29 7.78 809.07 92.00 4.476 425.38 117.80 87.72 56.46 58.11 42.47 787.94 7.78 795.72 93.00 4.408 418.93 116.01 86.39 55.82 56.46 41.50 775.11 7.78 782.90 94.00 4.341 412.57 114.25 85.08 54.97 55.82 40.33 763.02 7.78 770.81 95.00 4.275 406.31 112.52 83.79 54.14 54.97 39.87 751.60 7.78 759.38 96.00 4.210 400.15 110.81 82.51 53.32 54.14 39.27 740.20 7.78 747.98 97.00 4.146 394.07 109.13 81.26 52.51 53.32 38.67 728.97 7.78 736.75 98.00 4.084 388.10 107.47 80.03 51.71 52.51 38.08 717.91 7.78 725.69 99.00 4.022 382.21 105.84 78.81 50.93 51.71 37.51 707.01 7.78 714.80 100.00 3.961 376.41 104.24 77.62 50.15 50.93 36.94 696.29 7.78 704.07 101.00 3.900 370.70 102.66 76.44 49.39 50.15 36.38 685.72 7.78 693.51 102.00 3.841 365.07 101.10 75.28 48.64 49.39 35.82 675.32 7.78 683.10 103.00 3.783 359.53 99.57 74.14 47.91 48.64 35.28 665.07 7.78 672.86 104.00 3.726 354.08 98.05 73.01 47.18 47.91 34.75 654.98 7.78 662.77 105.00 3.669 348.71 96.57 71.91 46.46 47.18 34.22 645.04 7.78 652.83 106.00 3.613 343.42 95.10 70.82 45.76 46.46 33.70 635.26 7.78 643.04 107.00 3.559 338.21 93.66 69.74 45.06 45.76 33.19 625.62 7.78 633.40 108.00 3.505 333.07 92.24 68.68 44.38 45.06 32.68 616.13 7.78 623.91 109.00 3.451 328.02 90.84 67.64 43.71 44.38 32.19 606.78 7.78 614.56 110.00 3.399 323.04 89.46 66.61 43.04 43.71 31.70 597.57 7.78 605.36 111.00 3.348 318.14 88.10 65.60 42.39 43.04 31.22 588.51 7.78 596.29 112.00 3.297 313.32 86.77 64.61 41.75 42.39 30.75 579.58 7.78 587.36 113.00 3.247 308.56 85.45 63.63 41.11 41.75 30.28 570.78 7.78 578.57 114.00 3.197 303.88 84.15 62.66 40.49 41.11 29.82 562.12 7.78 569.91 115.00 3.149 299.27 82.88 61.71 39.88 40.49 29.37 553.59 7.78 561.38 116.00 3.101 294.73 81.62 60.78 39.27 39.88 28.92 545.20 7.78 552.98 117.00 3.054 290.26 80.38 59.85 38.68 39.27 28.48 536.92 7.78 544.71 118.00 3.008 285.85 79.16 58.95 38.09 38.68 28.05 528.78 7.78 536.56 119.00 2.962 281.52 77.96 58.05 37.51 38.09 27.63 520.75 7.78 528.54 120.00 2.917 277.25 76.78 57.17 36.94 37.51 27.21 512.85 7.78 520.64 121.00 2.873 273.04 75.61 56.30 36.38 36.94 26.79 505.07 7.78 512.86 122.00 2.829 268.90 74.47 55.45 35.83 36.38 26.39 497.41 7.78 505.19 123.00 2.786 264.82 73.34 54.61 35.29 35.83 25.99 489.86 7.78 497.65 124.00 2.744 260.80 72.22 53.78 34.75 35.29 25.59 482.43 7.78 490.21 125.00 2.703 256.84 71.13 52.96 34.22 34.75 25.20 475.11 7.78 482.90 126.00 2.661 252.95 70.05 52.16 33.70 34.22 24.82 467.90 7.78 475.69 Universitas Sumatera Utara 127.00 2.621 249.11 68.99 51.37 33.19 33.70 24.45 460.80 7.78 468.59 128.00 2.581 245.33 67.94 50.59 32.69 33.19 24.07 453.81 7.78 461.60 129.00 2.542 241.61 66.91 49.82 32.19 32.69 23.71 446.93 7.78 454.71 130.00 2.504 237.94 65.89 49.07 31.70 32.19 23.35 440.15 7.78 447.93 131.00 2.466 234.33 64.89 48.32 31.22 31.70 23.00 433.47 7.78 441.25 132.00 2.428 230.77 63.91 47.59 30.75 31.22 22.65 426.89 7.78 434.68 133.00 2.391 227.27 62.94 46.87 30.28 30.75 22.30 420.41 7.78 428.20 134.00 2.355 223.83 61.98 46.15 29.82 30.28 21.96 414.03 7.78 421.82 135.00 2.319 220.43 61.04 45.45 29.37 29.82 21.63 407.75 7.78 415.54 136.00 2.284 217.08 60.12 44.77 28.93 29.37 21.30 401.57 7.78 409.35 137.00 2.250 213.79 59.20 44.09 28.49 28.93 20.98 395.47 7.78 403.26 138.00 2.215 210.55 58.31 43.42 28.05 28.49 20.66 389.47 7.78 397.26 139.00 2.182 207.35 57.42 42.76 27.63 28.05 20.35 383.56 7.78 391.35 140.00 2.149 204.21 56.55 42.11 27.21 27.63 20.04 377.74 7.78 385.53 141.00 2.116 201.11 55.69 41.47 26.80 27.21 19.73 372.01 7.78 379.80 142.00 2.084 198.06 54.85 40.84 26.39 26.80 19.44 366.37 7.78 374.15 143.00 2.052 195.05 54.02 40.22 25.99 26.39 19.14 360.81 7.78 368.60 144.00 2.021 192.09 53.20 39.61 25.60 25.99 18.85 355.34 7.78 363.12 145.00 1.991 189.18 52.39 39.01 25.21 25.60 18.56 349.95 7.78 357.73 146.00 1.960 186.31 51.59 38.42 24.82 25.21 18.28 344.64 7.78 352.42 147.00 1.931 183.48 50.81 37.84 24.45 24.82 18.01 339.41 7.78 347.19 148.00 1.901 180.70 50.04 37.26 24.08 24.45 17.73 334.26 7.78 342.04 149.00 1.872 177.96 49.28 36.70 23.71 24.08 17.46 329.19 7.78 336.97 150.00 1.844 175.26 48.53 36.14 23.35 23.71 17.20 324.19 7.78 331.98 151.00 1.816 172.60 47.80 35.59 23.00 23.35 16.94 319.27 7.78 327.06 152.00 1.789 169.98 47.07 35.05 22.65 23.00 16.68 314.43 7.78 322.21 153.00 1.761 167.40 46.36 34.52 22.31 22.65 16.43 309.66 7.78 317.44 154.00 1.735 164.86 45.65 34.00 21.97 22.31 16.18 304.96 7.78 312.74 155.00 1.708 162.36 44.96 33.48 21.63 21.97 15.93 300.33 7.78 308.12 156.00 1.682 159.89 44.28 32.97 21.31 21.63 15.69 295.78 7.78 303.56 157.00 1.657 157.47 43.61 32.47 20.98 21.31 15.45 291.29 7.78 299.07 158.00 1.632 155.08 42.95 31.98 20.66 20.98 15.22 286.87 7.78 294.65 159.00 1.607 152.73 42.29 31.49 20.35 20.66 14.99 282.52 7.78 290.30 160.00 1.583 150.41 41.65 31.02 20.04 20.35 14.76 278.23 7.78 286.01 161.00 1.559 148.13 41.02 30.55 19.74 20.04 14.54 274.01 7.78 281.79 162.00 1.535 145.88 40.40 30.08 19.44 19.74 14.32 269.85 7.78 277.64 163.00 1.512 143.67 39.79 29.63 19.14 19.44 14.10 265.76 7.78 273.54 164.00 1.489 141.49 39.18 29.18 18.85 19.14 13.88 261.72 7.78 269.51 165.00 1.466 139.34 38.59 28.73 18.57 18.85 13.67 257.75 7.78 265.54 166.00 1.444 137.23 38.00 28.30 18.28 18.57 13.47 253.84 7.78 261.63 167.00 1.422 135.14 37.43 27.87 18.01 18.28 13.26 249.99 7.78 257.78 168.00 1.400 133.09 36.86 27.45 17.73 18.01 13.06 246.20 7.78 253.98 169.00 1.384 131.58 36.30 27.03 17.47 17.73 12.86 242.96 7.78 250.75 170.00 1.369 130.08 35.88 26.62 17.20 17.47 12.67 239.91 7.78 247.70 Universitas Sumatera Utara 171.00 1.353 128.59 35.48 26.32 16.94 17.20 12.48 237.00 7.78 244.78 172.00 1.338 127.13 35.07 26.02 16.75 16.94 12.29 234.18 7.78 241.97 173.00 1.322 125.68 34.67 25.72 16.56 16.75 12.10 231.47 7.78 239.25 174.00 1.307 124.24 34.28 25.43 16.37 16.56 11.96 228.83 7.78 236.61 175.00 1.292 122.83 33.88 25.14 16.18 16.37 11.83 226.22 7.78 234.00 176.00 1.278 121.43 33.50 24.85 16.00 16.18 11.69 223.64 7.78 231.43 177.00 1.263 120.04 33.12 24.57 15.81 16.00 11.56 221.09 7.78 228.88 178.00 1.249 118.67 32.74 24.29 15.63 15.81 11.43 218.57 7.78 226.36 179.00 1.234 117.32 32.37 24.01 15.45 15.63 11.29 216.08 7.78 223.86 180.00 1.220 115.98 32.00 23.73 15.28 15.45 11.17 213.61 7.78 221.40 181.00 1.206 114.66 31.63 23.46 15.10 15.28 11.04 211.18 7.78 218.96 182.00 1.193 113.35 31.27 23.20 14.93 15.10 10.91 208.77 7.78 216.56 183.00 1.179 112.06 30.91 22.93 14.76 14.93 10.79 206.39 7.78 214.18 184.00 1.166 110.78 30.56 22.67 14.59 14.76 10.67 204.04 7.78 211.82 185.00 1.152 109.52 30.21 22.41 14.43 14.59 10.54 201.71 7.78 209.50 186.00 1.139 108.27 29.87 22.16 14.26 14.43 10.42 199.41 7.78 207.20 187.00 1.126 107.04 29.53 21.90 14.10 14.26 10.30 197.14 7.78 204.92 188.00 1.113 105.82 29.19 21.65 13.94 14.10 10.19 194.89 7.78 202.68 189.00 1.101 104.61 28.86 21.41 13.78 13.94 10.07 192.67 7.78 200.45 190.00 1.088 103.42 28.53 21.16 13.62 13.78 9.96 190.47 7.78 198.26 191.00 1.076 102.24 28.21 20.92 13.47 13.62 9.84 188.30 7.78 196.09 192.00 1.064 101.07 27.88 20.68 13.31 13.47 9.73 186.15 7.78 193.94 Gambar 4.2 Grafik hidrograf Satuan Sintetik Nakayasu Sungai Indragiri kala ulang 25 tahun Universitas Sumatera Utara 2.12.3.2. Hidrograf Satuan Sintetik Snyder Perhitungan Hidrograf Satuan Sintetik Nakayasu dilakukan sebagai berikut: Luas A = 10.790,183 km 2 Panjang sungai utama L = 445,7 km Panjang antara titik berat daerah sungai dengan pelepasan Lc = 225,85 km tr =6 jam .Ct= 1,40; Cp = 0,75 1 t p = 0,75 C t L. L c 0,3 t p = 0,75 1,4L. L c 0,3 = 0,75 1,4445,7. 225,85 0,3 = 33,26 jam 2 T p = t p + 0,5 t r T p = t p + 0,5.6 = 33,26+ 0,5. 6 = 36,26 jam 3 q p = 0,278 C p T p = 0,278 0,75 36,26 = 0,001408 m 3 dtkmm 4 Q p = q p . A = 0,001408 10.790,183 = 15,1138 m 3 dtkmm Ordinat- ordinat hidrograf satuan dihitung dengan persamaan Alexeyev, yaitu Y = Q Q p dan X = t T p . Y= 10 , dimana = 1,32  + 0,15  + 0,045 dan  = .  = 0,101281, = 0,0737 , maka Y= 10 Universitas Sumatera Utara Perhitungan hidrograf satuan sintetik Snyder untuk Q 25 tahun dapat dilihat pada tabel berikut. Namun perhitungan debit banjir kala ulang 5 hingga 100 tahun dapat dilihat di Lampiran C. Universitas Sumatera Utara Tabel 4.30 Hasil Perhitungan debit banjir Q 25tahun Hidrograf Satuan Sintetik Snyder t X Y Q Hujan efektif mm Total debit m 3 dtk mm 95,04

25,92 19,01

12,01 12,01 8,64 1 0,027579 0,011998 0,181329 17,23347 17,23347 2 0,055157 0,123952 1,87338 178,046 4,700037 182,746 3 0,082736 0,269324 4,070511 386,8614 48,558 3,447056 438,8665 4 0,110314 0,396291 5,989465 569,2387 105,5077 35,61295 2,194076 712,5534 5 0,137893 0,49893 7,540731 716,6711 155,2469 77,38042 22,6679 2,194076 257,4893 6 0,165472 0,581043 8,781769 834,6194 195,4557 113,8597 49,25319 22,6679 1,566679 1217,423 7 0,19305 0,647188 9,781464 929,6303 227,6235 143,3493 72,47253 49,25319 16,186 1438,515 8 0,220629 0,701068 10,59581 1007,025 253,5355 166,9414 91,24284 72,47253 35,16922 1626,387 9 0,248207 0,745468 11,26686 1070,803 274,6433 185,9456 106,2594 91,24284 51,74898 1780,643 10 0,275786 0,782448 11,82576 1123,92 292,037 201,4263 118,3557 106,2594 65,15191 1907,151 11 0,303365 0,813538 12,29565 1168,578 306,5237 214,183 128,2092 118,3557 75,87449 2011,725 12 0,330943 0,83989 12,69392 1206,43 318,7032 224,8077 136,329 128,2092 84,51185 2098,991 13 0,358522 0,862381 13,03385 1238,737 329,0265 233,7403 143,0917 136,329 91,54776 2172,472 14 0,3861 0,881689 13,32567 1266,472 337,8373 241,3115 148,7773 143,0917 97,34568 2234,836 15 0,413679 0,898346 13,57743 1290,399 345,4015 247,7734 153,5965 148,7773 102,1746 2288,122 16 0,441258 0,912773 13,79548 1311,122 351,9269 253,3211 157,7096 153,5965 106,2344 2333,91 17 0,468836 0,925308 13,98492 1329,127 357,5787 258,1069 161,2407 157,7096 109,6755 2373,438 18 0,496415 0,936224 14,14991 1344,807 362,4892 262,252 164,2869 161,2407 112,6124 2407,688 19 0,523993 0,945746 14,29382 1358,485 366,7656 265,8534 166,9253 164,2869 115,1338 2437,45 20 0,551572 0,954059 14,41946 1370,426 370,4958 268,9897 169,2176 166,9253 117,309 2463,363 21 0,579151 0,961318 14,52917 1380,852 373,7525 271,7255 171,2139 169,2176 119,1929 2485,954 22 0,606729 0,967652 14,62489 1389,95 376,596 274,114 172,9552 171,2139 120,8297 2505,659 23 0,634308 0,97317 14,70829 1397,876 379,0772 276,1995 174,4755 172,9552 122,2552 2522,839 24 0,661886 0,977966 14,78078 1404,765 381,239 278,0192 175,8029 174,4755 123,4986 2537,8 25 0,689465 0,982119 14,84356 1410,732 383,1178 279,6047 176,9612 175,8029 124,5842 2550,802 26 0,717044 0,985699 14,89766 1415,874 384,745 280,9826 177,9703 176,9612 125,532 2562,065 27 0,744622 0,988765 14,944 1420,278 386,1474 282,176 178,8474 177,9703 126,3591 2571,778 28 0,772201 0,991369 14,98335 1424,017 387,3485 283,2046 179,607 178,8474 127,0797 2580,105 29 0,799779 0,993555 15,01639 1427,158 388,3684 284,0854 180,2617 179,607 127,7059 2587,186 30 0,827358 0,995364 15,04373 1429,756 389,2248 284,8334 180,8224 180,2617 128,2483 2593,147 31 0,854937 0,99683 15,06589 1431,862 389,9334 285,4616 181,2985 180,8224 128,7158 2598,094 32 0,882515 0,997984 15,08334 1433,52 390,5078 285,9813 181,6983 181,2985 129,1162 2602,122 33 0,910094 0,998855 15,09649 1434,771 390,9601 286,4025 182,0291 181,6983 129,4561 2605,317 34 0,937672 0,999466 15,10572 1435,648 391,3011 286,7343 182,2972 182,0291 129,7416 2607,751 35 0,965251 0,999839 15,11136 1436,184 391,5404 286,9843 182,5084 182,2972 129,9778 2609,492 36,26 0,99283 0,999993 15,1137 1436,406 391,6865 287,1598 182,6676 182,5084 130,1693 2610,597 37 1,020408 0,999947 15,113 1436,34 391,7471 287,267 182,7793 182,6676 130,32 2611,121 38 1,047987 0,999717 15,10952 1436,008 391,7291 287,3114 182,8475 182,7793 130,4337 2611,109 39 1,075565 0,999315 15,10345 1435,432 391,6387 287,2982 182,8758 182,8475 130,5135 2610,606 Universitas Sumatera Utara 40 1,103144 0,998757 15,09501 1434,63 391,4815 287,2319 182,8674 182,8758 130,5622 2609,648 41 1,130723 0,998052 15,08436 1433,618 391,2626 287,1166 182,8252 182,8674 130,5824 2608,272 42 1,158301 0,997213 15,07168 1432,412 390,9867 286,9561 182,7518 182,8252 130,5764 2606,508 43 1,18588 0,996249 15,0571 1431,027 390,6579 286,7538 182,6496 182,7518 130,5462 2604,386 44 1,213458 0,995168 15,04077 1429,475 390,2801 286,5126 182,5208 182,6496 130,4938 2601,932 45 1,241037 0,993979 15,0228 1427,767 389,8567 286,2355 182,3673 182,5208 130,4209 2599,168 46 1,268616 0,99269 15,00332 1425,915 389,391 285,925 182,1909 182,3673 130,3289 2596,118 47 1,296194 0,991307 14,98241 1423,929 388,886 285,5835 181,9933 182,1909 130,2193 2592,802 48 1,323773 0,989837 14,96019 1421,817 388,3442 285,213 181,7759 181,9933 130,0934 2589,237 49 1,351351 0,988285 14,93674 1419,588 387,7682 284,8157 181,5401 181,7759 129,9522 2585,44 50 1,37893 0,986657 14,91214 1417,25 387,1603 284,3933 181,2872 181,5401 129,797 2581,428 51 1,406509 0,984958 14,88646 1414,809 386,5227 283,9474 181,0183 181,2872 129,6287 2577,214 52 1,434087 0,983193 14,85978 1412,274 385,8571 283,4798 180,7346 181,0183 129,4481 2572,812 53 1,461666 0,981366 14,83216 1409,649 385,1656 282,9917 180,4369 180,7346 129,2561 2568,234 54 1,489244 0,97948 14,80367 1406,94 384,4497 282,4845 180,1262 180,4369 129,0534 2563,491 55 1,516823 0,97754 14,77434 1404,154 383,711 281,9594 179,8034 180,1262 128,8409 2558,595 56 1,544402 0,975549 14,74425 1401,294 382,951 281,4177 179,4692 179,8034 128,619 2553,554 57 1,57198 0,97351 14,71343 1398,365 382,171 280,8603 179,1244 179,4692 128,3885 2548,378 58 1,599559 0,971426 14,68194 1395,372 381,3722 280,2882 178,7696 179,1244 128,1499 2543,076 59 1,627137 0,9693 14,64981 1392,318 380,5559 279,7024 178,4054 178,7696 127,9037 2537,655 60 1,654716 0,967135 14,61709 1389,208 379,7231 279,1037 178,0326 178,4054 127,6503 2532,123 61 1,682295 0,964933 14,5838 1386,045 378,8749 278,4929 177,6515 178,0326 127,3903 2526,487 62 1,709873 0,962696 14,55 1382,832 378,0122 277,8708 177,2627 177,6515 127,1241 2520,753 63 1,737452 0,960427 14,5157 1379,572 377,1359 277,2381 176,8668 177,2627 126,852 2514,927 64 1,76503 0,958127 14,48094 1376,268 376,2469 276,5954 176,464 176,8668 126,5744 2509,016 65 1,792609 0,955798 14,44575 1372,924 375,3459 275,9434 176,055 176,464 126,2916 2503,024 66 1,820188 0,953443 14,41015 1369,541 374,4337 275,2826 175,6399 176,055 126,0041 2496,956 67 1,847766 0,951063 14,37417 1366,121 373,511 274,6136 175,2194 175,6399 125,712 2490,817 68 1,875345 0,948659 14,33784 1362,668 372,5785 273,9369 174,7935 175,2194 125,4156 2484,612 69 1,902923 0,946232 14,30117 1359,183 371,6367 273,253 174,3628 174,7935 125,1153 2478,344 70 1,930502 0,943786 14,26419 1355,668 370,6863 272,5623 173,9275 174,3628 124,8112 2472,019 71 1,958081 0,94132 14,22692 1352,126 369,7278 271,8652 173,4878 173,9275 124,5037 2465,638 72 1,985659 0,938835 14,18937 1348,558 368,7616 271,1622 173,0441 173,4878 124,1928 2459,206 73 2,013238 0,936334 14,15157 1344,965 367,7884 270,4537 172,5967 173,0441 123,8789 2452,727 74 2,040816 0,933817 14,11353 1341,35 366,8086 269,7399 172,1457 172,5967 123,5621 2446,202 75 2,068395 0,931285 14,07526 1337,713 365,8226 269,0213 171,6914 172,1457 123,2426 2439,636 76 2,095974 0,92874 14,03679 1334,057 364,8308 268,2981 171,234 171,6914 122,9205 2433,031 77 2,123552 0,926182 13,99813 1330,382 363,8336 267,5707 170,7737 171,234 122,5961 2426,39 78 2,151131 0,923612 13,95928 1326,69 362,8314 266,8394 170,3107 170,7737 122,2695 2419,715 79 2,178709 0,921031 13,92027 1322,983 361,8246 266,1044 169,8452 170,3107 121,9409 2413,008 80 2,206288 0,918439 13,88111 1319,26 360,8135 265,366 169,3773 169,8452 121,6103 2406,273 81 2,233867 0,915838 13,8418 1315,525 359,7983 264,6244 168,9073 169,3773 121,2779 2399,51 82 2,261445 0,913229 13,80236 1311,776 358,7794 263,8798 168,4353 168,9073 120,9438 2392,722 Universitas Sumatera Utara 83 2,289024 0,910611 13,7628 1308,016 357,7572 263,1326 167,9614 168,4353 120,6082 2385,911 84 2,316602 0,907987 13,72313 1304,246 356,7317 262,3829 167,4858 167,9614 120,2712 2379,079 85 2,344181 0,905355 13,68335 1300,466 355,7035 261,6308 167,0086 167,4858 119,9328 2372,227 86 2,37176 0,902717 13,64349 1296,677 354,6725 260,8766 166,5299 167,0086 119,5931 2365,358 87 2,399338 0,900074 13,60354 1292,88 353,6392 260,1206 166,0498 166,5299 119,2524 2358,472 88 2,426917 0,897426 13,56351 1289,076 352,6037 259,3627 165,5686 166,0498 118,9106 2351,572 89 2,454495 0,894773 13,52342 1285,266 351,5662 258,6032 165,0862 165,5686 118,5678 2344,658 90 2,482074 0,892116 13,48326 1281,449 350,527 257,8424 164,6028 165,0862 118,2242 2337,732 91 2,509653 0,889456 13,44306 1277,628 349,4862 257,0802 164,1185 164,6028 117,8797 2330,795 92 2,537231 0,886792 13,4028 1273,802 348,444 256,3168 163,6334 164,1185 117,5346 2323,85 93 2,56481 0,884126 13,36251 1269,973 347,4006 255,5525 163,1475 163,6334 117,1887 2316,896 94 2,592388 0,881458 13,32218 1266,14 346,3562 254,7873 162,661 163,1475 116,8423 2309,934 95 2,619967 0,878788 13,28182 1262,305 345,3109 254,0213 162,1739 162,661 116,4954 2302,967 96 2,647546 0,876116 13,24145 1258,467 344,2649 253,2547 161,6864 162,1739 116,148 2295,995 97 2,675124 0,873444 13,20105 1254,628 343,2183 252,4875 161,1984 161,6864 115,8002 2289,019 98 2,702703 0,87077 13,16065 1250,788 342,1713 251,7199 160,7101 161,1984 115,4521 2282,039 99 2,730281 0,868096 13,12023 1246,947 341,1239 250,952 160,2215 160,7101 115,1036 2275,058 100 2,75786 0,865422 13,07982 1243,106 340,0764 250,1839 159,7327 160,2215 114,755 2268,075 101 2,785438 0,862748 13,0394 1239,265 339,0289 249,4156 159,2438 159,7327 114,4061 2261,092 102 2,813017 0,860075 12,999 1235,425 337,9814 248,6473 158,7548 159,2438 114,0571 2254,109 103 2,840596 0,857402 12,9586 1231,586 336,934 247,8791 158,2658 158,7548 113,708 2247,127 104 2,868174 0,85473 12,91822 1227,748 335,887 247,111 157,7768 158,2658 113,3588 2240,147 105 2,895753 0,85206 12,87786 1223,912 334,8404 246,3431 157,2879 157,7768 113,0096 2233,17 106 2,923331 0,849391 12,83752 1220,078 333,7942 245,5754 156,7991 157,2879 112,6605 2226,195 107 2,95091 0,846724 12,79721 1216,247 332,7486 244,8082 156,3105 156,7991 112,3113 2219,225 108 2,978489 0,844058 12,75693 1212,418 331,7037 244,0413 155,8221 156,3105 111,9623 2212,258 109 3,006067 0,841395 12,71667 1208,593 330,6595 243,275 155,334 155,8221 111,6135 2205,297 110 3,033646 0,838734 12,67646 1204,771 329,6162 242,5092 154,8462 155,334 111,2647 2198,341 111 3,061224 0,836076 12,63628 1200,952 328,5738 241,744 154,3588 154,8462 110,9162 2191,391 112 3,088803 0,83342 12,59614 1197,138 327,5324 240,9795 153,8718 154,3588 110,5679 2184,448 113 3,116382 0,830767 12,55605 1193,327 326,4921 240,2157 153,3851 153,8718 110,2198 2177,512 114 3,14396 0,828118 12,516 1189,521 325,4528 239,4527 152,899 153,3851 109,8721 2170,583 115 3,171539 0,825471 12,47601 1185,72 324,4148 238,6905 152,4133 152,899 109,5246 2163,662 116 3,199117 0,822828 12,43606 1181,923 323,3781 237,9293 151,9282 152,4133 109,1775 2156,75 117 3,226696 0,820189 12,39617 1178,132 322,3427 237,1689 151,4437 151,9282 108,8307 2149,846 118 3,254275 0,817553 12,35633 1174,346 321,3087 236,4095 150,9597 151,4437 108,4843 2142,952 119 3,281853 0,814921 12,31655 1170,565 320,2761 235,6512 150,4763 150,9597 108,1383 2136,067 120 3,309432 0,812293 12,27683 1166,79 319,2451 234,8939 149,9936 150,4763 107,7927 2129,192 121 3,33701 0,809669 12,23718 1163,021 318,2156 234,1377 149,5116 149,9936 107,4476 2122,327 122 3,364589 0,807049 12,19758 1159,258 317,1876 233,3826 149,0303 149,5116 107,1029 2115,474 123 3,392168 0,804434 12,15806 1155,502 316,1614 232,6287 148,5497 149,0303 106,7587 2108,631 124 3,419746 0,801823 12,1186 1151,751 315,1368 231,8761 148,0699 148,5497 106,415 2101,799 125 3,447325 0,799217 12,0792 1148,008 314,114 231,1247 147,5908 148,0699 106,0719 2094,979 Universitas Sumatera Utara 126 3,474903 0,796615 12,03988 1144,27 313,093 230,3745 147,1125 147,5908 105,7292 2088,17 127 3,502482 0,794018 12,00063 1140,54 312,0737 229,6257 146,635 147,1125 105,3871 2081,374 128 3,530061 0,791426 11,96146 1136,817 311,0564 228,8782 146,1584 146,635 105,0456 2074,59 129 3,557639 0,788839 11,92235 1133,101 310,0409 228,132 145,6826 146,1584 104,7047 2067,819 130 3,585218 0,786257 11,88333 1129,392 309,0274 227,3873 145,2077 145,6826 104,3643 2061,061 131 3,612796 0,78368 11,84438 1125,69 308,0159 226,644 144,7336 145,2077 104,0246 2054,316 132 3,640375 0,781108 11,80551 1121,996 307,0063 225,9021 144,2605 144,7336 103,6855 2047,584 133 3,667954 0,778542 11,76672 1118,309 305,9988 225,1617 143,7883 144,2605 103,347 2040,865 134 3,695532 0,77598 11,72801 1114,63 304,9934 224,4228 143,317 143,7883 103,0091 2034,161 135 3,723111 0,773425 11,68938 1110,959 303,9901 223,6854 142,8467 143,317 102,672 2027,47 136 3,750689 0,770874 11,65084 1107,296 302,9888 222,9495 142,3773 142,8467 102,3354 2020,794 137 3,778268 0,76833 11,61238 1103,641 301,9898 222,2152 141,9089 142,3773 101,9996 2014,131 138 3,805847 0,76579 11,574 1099,993 300,9929 221,4825 141,4415 141,9089 101,6645 2007,484 139 3,833425 0,763257 11,53571 1096,354 299,9982 220,7513 140,9752 141,4415 101,33 2000,85 140 3,861004 0,760729 11,49751 1092,723 299,0057 220,0218 140,5098 140,9752 100,9963 1994,232 141 3,888582 0,758207 11,45939 1089,101 298,0155 219,2939 140,0454 140,5098 100,6633 1987,629 142 3,916161 0,755691 11,42137 1085,487 297,0275 218,5677 139,5821 140,0454 100,331 1981,04 143 3,94374 0,753181 11,38343 1081,881 296,0418 217,8431 139,1199 139,5821 99,99939 1974,467 144 3,971318 0,750677 11,34558 1078,284 295,0585 217,1202 138,6587 139,1199 99,66857 1967,91 145 3,998897 0,748179 11,30782 1074,695 294,0774 216,399 138,1985 138,6587 99,33849 1961,367 146 4,026475 0,745686 11,27015 1071,115 293,0987 215,6795 137,7395 138,1985 99,00917 1954,841 147 4,054054 0,7432 11,23258 1067,544 292,1224 214,9617 137,2815 137,7395 98,68061 1948,33 148 4,081633 0,74072 11,19509 1063,982 291,1484 214,2456 136,8246 137,2815 98,35282 1941,835 149 4,109211 0,738246 11,1577 1060,428 290,1768 213,5313 136,3689 136,8246 98,0258 1935,356 150 4,13679 0,735778 11,12041 1056,883 289,2077 212,8187 135,9142 136,3689 97,69957 1928,892 151 4,164368 0,733317 11,0832 1053,348 288,2409 212,1079 135,4606 135,9142 97,37412 1922,446 152 4,191947 0,730862 11,04609 1049,821 287,2766 211,3989 135,0082 135,4606 97,04947 1916,015 153 4,219526 0,728413 11,00908 1046,303 286,3148 210,6917 134,5569 135,0082 96,72561 1909,6 154 4,247104 0,72597 10,97216 1042,794 285,3554 209,9863 134,1068 134,5569 96,40256 1903,202 155 4,274683 0,723533 10,93534 1039,295 284,3985 209,2826 133,6577 134,1068 96,08031 1896,821 156 4,302261 0,721103 10,89861 1035,804 283,444 208,5808 133,2099 133,6577 95,75888 1890,456 157 4,32984 0,71868 10,86198 1032,323 282,4921 207,8808 132,7632 133,2099 95,43826 1884,107 158 4,357419 0,716263 10,82545 1028,851 281,5426 207,1826 132,3176 132,7632 95,11846 1877,775 159 4,384997 0,713852 10,78902 1025,388 280,5957 206,4863 131,8732 132,3176 94,79949 1871,46 160 4,412576 0,711448 10,75268 1021,934 279,6513 205,7918 131,43 131,8732 94,48134 1865,162 161 4,440154 0,70905 10,71644 1018,49 278,7094 205,0992 130,988 131,43 94,16402 1858,881 162 4,467733 0,706659 10,6803 1015,055 277,7701 204,4084 130,5471 130,988 93,84754 1852,616 163 4,495312 0,704274 10,64425 1011,63 276,8333 203,7195 130,1074 130,5471 93,5319 1846,369 164 4,52289 0,701895 10,60831 1008,214 275,899 203,0324 129,6689 130,1074 93,21709 1840,138 165 4,550469 0,699524 10,57246 1004,807 274,9673 202,3472 129,2316 129,6689 92,90313 1833,925 166 4,578047 0,697159 10,53672 1001,409 274,0382 201,6639 128,7954 129,2316 92,59002 1827,729 167 4,605626 0,6948 10,50107 998,0215 273,1117 200,9825 128,3605 128,7954 92,27775 1821,549 168 4,633205 0,692448 10,46552 994,643 272,1877 200,303 127,9268 128,3605 91,96634 1815,387 Universitas Sumatera Utara 169 4,660783 0,690103 10,43007 991,2741 271,2663 199,6253 127,4943 127,9268 91,65578 1809,242 170 4,688362 0,687764 10,39472 987,9146 270,3475 198,9495 127,0629 127,4943 91,34607 1803,115 171 4,71594 0,685432 10,35948 984,5647 269,4313 198,2757 126,6328 127,0629 91,03722 1797,005 172 4,743519 0,683106 10,32433 981,2242 268,5176 197,6037 126,2039 126,6328 90,72923 1790,911 173 4,771098 0,680787 10,28928 977,8933 267,6066 196,9337 125,7762 126,2039 90,42209 1784,836 174 4,798676 0,678475 10,25433 974,572 266,6982 196,2655 125,3497 125,7762 90,11583 1778,777 175 4,826255 0,676169 10,21949 971,2602 265,7924 195,5992 124,9244 125,3497 89,81042 1772,736 176 4,853833 0,67387 10,18474 967,958 264,8891 194,9349 124,5003 124,9244 89,50588 1766,713 177 4,881412 0,671578 10,1501 964,6653 263,9885 194,2725 124,0775 124,5003 89,2022 1760,706 178 4,908991 0,669293 10,11555 961,3822 263,0905 193,612 123,6558 124,0775 88,89939 1754,717 179 4,936569 0,667014 10,08111 958,1087 262,1952 192,9534 123,2354 123,6558 88,59745 1748,746 180 4,964148 0,664741 10,04677 954,8448 261,3024 192,2967 122,8162 123,2354 88,29638 1742,792 181 4,991726 0,662476 10,01253 951,5905 260,4122 191,6419 122,3982 122,8162 87,99618 1736,855 182 5,019305 0,660217 9,978386 948,3458 259,5247 190,9891 121,9814 122,3982 87,69685 1730,936 183 5,046884 0,657965 9,944346 945,1107 258,6398 190,3381 121,5659 121,9814 87,39838 1725,034 184 5,074462 0,655719 9,910408 941,8851 257,7575 189,6891 121,1516 121,5659 87,10079 1719,15 185 5,102041 0,65348 9,87657 938,6692 256,8778 189,042 120,7385 121,1516 86,80407 1713,283 186 5,129619 0,651248 9,842833 935,4629 256,0007 188,3968 120,3266 120,7385 86,50823 1707,434 187 5,157198 0,649023 9,809198 932,2662 255,1262 187,7536 119,9159 120,3266 86,21325 1701,602 188 5,184777 0,646804 9,775663 929,079 254,2544 187,1123 119,5065 119,9159 85,91915 1695,787 189 5,212355 0,644592 9,742229 925,9015 253,3852 186,4729 119,0983 119,5065 85,62592 1689,99 190 5,239934 0,642386 9,708897 922,7335 252,5186 185,8354 118,6913 119,0983 85,33357 1684,211 191 5,267512 0,640187 9,675665 919,5752 251,6546 185,1998 118,2855 118,6913 85,04208 1678,448 192 5,295091 0,637995 9,642533 916,4264 250,7932 184,5661 117,881 118,2855 84,75147 1672,704 193 5,32267 0,63581 9,609503 913,2872 249,9345 183,9344 117,4776 117,881 84,46173 1666,976 194 5,350248 0,633631 9,576573 910,1575 249,0783 183,3046 117,0755 117,4776 84,17286 1661,266 195 5,377827 0,631459 9,543744 907,0374 248,2248 182,6767 116,6747 117,0755 83,88487 1655,574 196 5,405405 0,629293 9,511015 903,9269 247,3738 182,0507 116,275 116,6747 83,59774 1649,899 197 5,432984 0,627135 9,478387 900,8259 246,5255 181,4266 115,8765 116,275 83,31149 1644,241 198 5,460563 0,624982 9,445859 897,7345 245,6798 180,8044 115,4793 115,8765 83,02611 1638,601 Universitas Sumatera Utara Gambar 4.3 Grafik hidrograf Satuan Sintetik Sneyder Sungai Indragiri kala ulang 25 tahun

2.13. Analisis Hidrolika