1 RETURN INTENSITY PERIOD RAINFALL 5 56.95 10 68.83 20 71.36 30 76.57 50 81.70 80 84.02 1 RAINFALL HYETOGRAPH TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .42 .50 .52 .56 .60 .61 .2 1.46 1.77 1.83 1.97 2.10 2.16 .3 3.71 4.48 4.65 4.98 5.32 5.47 .4 6.55 7.92 8.21 8.81 9.40 9.67 .5 8.16 9.86 10.23 10.97 11.71 12.04 .6 7.38 8.91 9.24 9.92 10.58 10.88 .7 7.60 9.19 9.53 10.22 10.91 11.22 .8 7.14 8.62 8.94 9.59 10.24 10.53 .9 7.66 9.26 9.60 10.30 10.99 11.30 1.0 6.87 8.31 8.61 9.24 9.86 10.14 1 SM-1 1 ( NA ) STRIP NUMBER = 5 ( DT ) UNIT TIME OF UNIT-GRAPH(HOUR) = .10 ( XL ) BASIN-LENGTH(KM) = 1.50 (COFF) RUNOFF COEFFICIENT = .75 (BET ) INITIAL CONCENTRATION TIME = .00 ZONING LENGTH AREA(I) ACCUMU. WIDTH TIME NUMBER (KM) (SQ.KM) AREA(I) (KM) (HR) 1 .05 .010 .010 .200 .002 2 .32 .260 .270 .813 .010 3 .50 .410 .680 .820 .029 4 .50 .300 .980 .600 .048 5 .18 .050 1.030 .278 .014 1 CONCENTRATED LENGTH AND AREA TIME LENGTH AREA (HOUR) (KM) (SQ.KM) .1 1.52 1.021 .2 1.55 .009 C1 = .656 C2 = .344 1 AREA-ROUTING UNIT-HYDROGRAPH TIME AREA I=2.7780 (I1 + I2)/2 C1 * (1) C2 * (4) (2) + (3) (HR.) (KM**2) * AREA = (1) = (2) = (3) = (4) .1 1.021 2.836 1.418 .930 .000 .9296 .2 .009 .025 1.431 .938 .320 1.2581 .3 .000 .000 .013 .008 .433 .4416 .4 .000 .000 .000 .000 .152 .1521 .5 .000 .000 .000 .000 .052 .0524 .6 .000 .000 .000 .000 .018 .0181 .7 .000 .000 .000 .000 .006 .0062 .8 .000 .000 .000 .000 .002 .0021 .9 .000 .000 .000 .000 .001 .0007 1.0 .000 .000 .000 .000 .000 .0003 1.1 .000 .000 .000 .000 .000 .0001 1.2 .000 .000 .000 .000 .000 .0000 1.3 .000 .000 .000 .000 .000 .0000 1.4 .000 .000 .000 .000 .000 .0000 1.5 .000 .000 .000 .000 .000 .0000 1.6 .000 .000 .000 .000 .000 .0000 1.7 .000 .000 .000 .000 .000 .0000 1.8 .000 .000 .000 .000 .000 .0000 1.9 .000 .000 .000 .000 .000 .0000 2.0 .000 .000 .000 .000 .000 .0000 2.1 .000 .000 .000 .000 .000 .0000 2.2 .000 .000 .000 .000 .000 .0000 2.3 .000 .000 .000 .000 .000 .0000 2.4 .000 .000 .000 .000 .000 .0000 2.5 .000 .000 .000 .000 .000 .0000 2.6 .000 .000 .000 .000 .000 .0000 2.7 .000 .000 .000 .000 .000 .0000 2.8 .000 .000 .000 .000 .000 .0000 2.9 .000 .000 .000 .000 .000 .0000 3.0 .000 .000 .000 .000 .000 .0000 3.1 .000 .000 .000 .000 .000 .0000 3.2 .000 .000 .000 .000 .000 .0000 3.3 .000 .000 .000 .000 .000 .0000 3.4 .000 .000 .000 .000 .000 .0000 3.5 .000 .000 .000 .000 .000 .0000 3.6 .000 .000 .000 .000 .000 .0000 3.7 .000 .000 .000 .000 .000 .0000 3.8 .000 .000 .000 .000 .000 .0000 3.9 .000 .000 .000 .000 .000 .0000 4.0 .000 .000 .000 .000 .000 .0000 4.1 .000 .000 .000 .000 .000 .0000 4.2 .000 .000 .000 .000 .000 .0000 4.3 .000 .000 .000 .000 .000 .0000 4.4 .000 .000 .000 .000 .000 .0000 4.5 .000 .000 .000 .000 .000 .0000 4.6 .000 .000 .000 .000 .000 .0000 4.7 .000 .000 .000 .000 .000 .0000 4.8 .000 .000 .000 .000 .000 .0000 4.9 .000 .000 .000 .000 .000 .0000 5.0 .000 .000 .000 .000 .000 .0000 1 FLOOD HYDROGRAPH BY AREA-ROUTING UNIT-HYDROGRAPH METHOD BASIN AREA = 1.03SQ.KM BASIN LENGTH = 1.50KM TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .29 .35 .36 .39 .42 .43 .2 1.41 1.71 1.77 1.90 2.03 2.08 .3 4.10 4.96 5.14 5.52 5.89 6.05 .4 8.60 10.39 10.78 11.56 12.34 12.69 .5 13.29 16.06 16.65 17.86 19.06 19.60 .6 15.50 18.73 19.42 20.84 22.24 22.87 .7 15.88 19.19 19.90 21.35 22.78 23.42 .8 15.84 19.14 19.85 21.29 22.72 23.37 .9 15.86 19.17 19.88 21.33 22.76 23.40 1.0 10.90 13.17 13.65 14.65 15.63 16.07 1.1 3.80 4.59 4.76 5.11 5.45 5.61 1.2 1.31 1.58 1.64 1.76 1.88 1.93 1.3 .45 .55 .57 .61 .65 .67 1.4 .16 .19 .19 .21 .22 .23 1.5 .05 .06 .07 .07 .08 .08 1.6 .02 .02 .02 .02 .03 .03 1.7 .01 .01 .01 .01 .01 .01 1.8 .00 .00 .00 .00 .00 .00 1.9 .00 .00 .00 .00 .00 .00 2.0 .00 .00 .00 .00 .00 .00 2.1 .00 .00 .00 .00 .00 .00 2.2 .00 .00 .00 .00 .00 .00 2.3 .00 .00 .00 .00 .00 .00 2.4 .00 .00 .00 .00 .00 .00 2.5 .00 .00 .00 .00 .00 .00 2.6 .00 .00 .00 .00 .00 .00 2.7 .00 .00 .00 .00 .00 .00 2.8 .00 .00 .00 .00 .00 .00 2.9 .00 .00 .00 .00 .00 .00 3.0 .00 .00 .00 .00 .00 .00 3.1 .00 .00 .00 .00 .00 .00 3.2 .00 .00 .00 .00 .00 .00 3.3 .00 .00 .00 .00 .00 .00 3.4 .00 .00 .00 .00 .00 .00 3.5 .00 .00 .00 .00 .00 .00 3.6 .00 .00 .00 .00 .00 .00 3.7 .00 .00 .00 .00 .00 .00 3.8 .00 .00 .00 .00 .00 .00 3.9 .00 .00 .00 .00 .00 .00 4.0 .00 .00 .00 .00 .00 .00 4.1 .00 .00 .00 .00 .00 .00 4.2 .00 .00 .00 .00 .00 .00 4.3 .00 .00 .00 .00 .00 .00 4.4 .00 .00 .00 .00 .00 .00 4.5 .00 .00 .00 .00 .00 .00 4.6 .00 .00 .00 .00 .00 .00 4.7 .00 .00 .00 .00 .00 .00 4.8 .00 .00 .00 .00 .00 .00 4.9 .00 .00 .00 .00 .00 .00 5.0 .00 .00 .00 .00 .00 .00 1 RETURN INTENSITY PERIOD RAINFALL 5 56.95 10 68.83 20 71.36 30 76.57 50 81.70 80 84.02 1 RAINFALL HYETOGRAPH TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .42 .50 .52 .56 .60 .61 .2 1.46 1.77 1.83 1.97 2.10 2.16 .3 3.71 4.48 4.65 4.98 5.32 5.47 .4 6.55 7.92 8.21 8.81 9.40 9.67 .5 8.16 9.86 10.23 10.97 11.71 12.04 .6 7.38 8.91 9.24 9.92 10.58 10.88 .7 7.60 9.19 9.53 10.22 10.91 11.22 .8 7.14 8.62 8.94 9.59 10.24 10.53 .9 7.66 9.26 9.60 10.30 10.99 11.30 1.0 6.87 8.31 8.61 9.24 9.86 10.14 1 SM-2 1 ( NA ) STRIP NUMBER = 5 ( DT ) UNIT TIME OF UNIT-GRAPH(HOUR) = .10 ( XL ) BASIN-LENGTH(KM) = 1.53 (COFF) RUNOFF COEFFICIENT = .75 (BET ) INITIAL CONCENTRATION TIME = .00 ZONING LENGTH AREA(I) ACCUMU. WIDTH TIME NUMBER (KM) (SQ.KM) AREA(I) (KM) (HR) 1 .35 .150 .150 .429 .021 2 .50 .870 1.020 1.740 .019 3 .50 .970 1.990 1.940 .029 4 .50 .610 2.600 1.220 .048 5 .18 .070 2.670 .389 .014 1 CONCENTRATED LENGTH AND AREA TIME LENGTH AREA (HOUR) (KM) (SQ.KM) .1 1.66 2.371 .2 2.03 .299 C1 = .549 C2 = .451 1 AREA-ROUTING UNIT-HYDROGRAPH TIME AREA I=2.7780 (I1 + I2)/2 C1 * (1) C2 * (4) (2) + (3) (HR.) (KM**2) * AREA = (1) = (2) = (3) = (4) .1 2.371 6.587 3.293 1.808 .000 1.8084 .2 .299 .830 3.709 2.036 .815 2.8518 .3 .000 .000 .415 .228 1.286 1.5139 .4 .000 .000 .000 .000 .683 .6826 .5 .000 .000 .000 .000 .308 .3078 .6 .000 .000 .000 .000 .139 .1388 .7 .000 .000 .000 .000 .063 .0626 .8 .000 .000 .000 .000 .028 .0282 .9 .000 .000 .000 .000 .013 .0127 1.0 .000 .000 .000 .000 .006 .0057 1.1 .000 .000 .000 .000 .003 .0026 1.2 .000 .000 .000 .000 .001 .0012 1.3 .000 .000 .000 .000 .001 .0005 1.4 .000 .000 .000 .000 .000 .0002 1.5 .000 .000 .000 .000 .000 .0001 1.6 .000 .000 .000 .000 .000 .0000 1.7 .000 .000 .000 .000 .000 .0000 1.8 .000 .000 .000 .000 .000 .0000 1.9 .000 .000 .000 .000 .000 .0000 2.0 .000 .000 .000 .000 .000 .0000 2.1 .000 .000 .000 .000 .000 .0000 2.2 .000 .000 .000 .000 .000 .0000 2.3 .000 .000 .000 .000 .000 .0000 2.4 .000 .000 .000 .000 .000 .0000 2.5 .000 .000 .000 .000 .000 .0000 2.6 .000 .000 .000 .000 .000 .0000 2.7 .000 .000 .000 .000 .000 .0000 2.8 .000 .000 .000 .000 .000 .0000 2.9 .000 .000 .000 .000 .000 .0000 3.0 .000 .000 .000 .000 .000 .0000 3.1 .000 .000 .000 .000 .000 .0000 3.2 .000 .000 .000 .000 .000 .0000 3.3 .000 .000 .000 .000 .000 .0000 3.4 .000 .000 .000 .000 .000 .0000 3.5 .000 .000 .000 .000 .000 .0000 3.6 .000 .000 .000 .000 .000 .0000 3.7 .000 .000 .000 .000 .000 .0000 3.8 .000 .000 .000 .000 .000 .0000 3.9 .000 .000 .000 .000 .000 .0000 4.0 .000 .000 .000 .000 .000 .0000 4.1 .000 .000 .000 .000 .000 .0000 4.2 .000 .000 .000 .000 .000 .0000 4.3 .000 .000 .000 .000 .000 .0000 4.4 .000 .000 .000 .000 .000 .0000 4.5 .000 .000 .000 .000 .000 .0000 4.6 .000 .000 .000 .000 .000 .0000 4.7 .000 .000 .000 .000 .000 .0000 4.8 .000 .000 .000 .000 .000 .0000 4.9 .000 .000 .000 .000 .000 .0000 5.0 .000 .000 .000 .000 .000 .0000 1 FLOOD HYDROGRAPH BY AREA-ROUTING UNIT-HYDROGRAPH METHOD BASIN AREA = 2.67SQ.KM BASIN LENGTH = 1.53KM TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .56 .68 .71 .76 .81 .83 .2 2.87 3.47 3.60 3.86 4.12 4.24 .3 8.63 10.43 10.81 11.60 12.38 12.73 .4 18.69 22.59 23.42 25.14 26.82 27.58 .5 30.14 36.43 37.77 40.53 43.24 44.47 .6 37.18 44.93 46.59 49.99 53.34 54.85 .7 39.74 48.02 49.79 53.42 57.00 58.62 .8 40.47 48.91 50.71 54.41 58.05 59.70 .9 40.83 49.35 51.17 54.90 58.58 60.24 1.0 31.33 37.87 39.26 42.13 44.95 46.22 1.1 15.44 18.66 19.34 20.76 22.15 22.78 1.2 6.96 8.41 8.72 9.36 9.99 10.27 1.3 3.14 3.79 3.93 4.22 4.50 4.63 1.4 1.42 1.71 1.77 1.90 2.03 2.09 1.5 .64 .77 .80 .86 .92 .94 1.6 .29 .35 .36 .39 .41 .42 1.7 .13 .16 .16 .17 .19 .19 1.8 .06 .07 .07 .08 .08 .09 1.9 .03 .03 .03 .04 .04 .04 2.0 .01 .01 .01 .02 .02 .02 2.1 .01 .01 .01 .01 .01 .01 2.2 .00 .00 .00 .00 .00 .00 2.3 .00 .00 .00 .00 .00 .00 2.4 .00 .00 .00 .00 .00 .00 2.5 .00 .00 .00 .00 .00 .00 2.6 .00 .00 .00 .00 .00 .00 2.7 .00 .00 .00 .00 .00 .00 2.8 .00 .00 .00 .00 .00 .00 2.9 .00 .00 .00 .00 .00 .00 3.0 .00 .00 .00 .00 .00 .00 3.1 .00 .00 .00 .00 .00 .00 3.2 .00 .00 .00 .00 .00 .00 3.3 .00 .00 .00 .00 .00 .00 3.4 .00 .00 .00 .00 .00 .00 3.5 .00 .00 .00 .00 .00 .00 3.6 .00 .00 .00 .00 .00 .00 3.7 .00 .00 .00 .00 .00 .00 3.8 .00 .00 .00 .00 .00 .00 3.9 .00 .00 .00 .00 .00 .00 4.0 .00 .00 .00 .00 .00 .00 4.1 .00 .00 .00 .00 .00 .00 4.2 .00 .00 .00 .00 .00 .00 4.3 .00 .00 .00 .00 .00 .00 4.4 .00 .00 .00 .00 .00 .00 4.5 .00 .00 .00 .00 .00 .00 4.6 .00 .00 .00 .00 .00 .00 4.7 .00 .00 .00 .00 .00 .00 4.8 .00 .00 .00 .00 .00 .00 4.9 .00 .00 .00 .00 .00 .00 5.0 .00 .00 .00 .00 .00 .00 1 RETURN INTENSITY PERIOD RAINFALL 5 56.95 10 68.83 20 71.36 30 76.57 50 81.70 80 84.02 1 RAINFALL HYETOGRAPH TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .42 .50 .52 .56 .60 .61 .2 1.46 1.77 1.83 1.97 2.10 2.16 .3 3.71 4.48 4.65 4.98 5.32 5.47 .4 6.55 7.92 8.21 8.81 9.40 9.67 .5 8.16 9.86 10.23 10.97 11.71 12.04 .6 7.38 8.91 9.24 9.92 10.58 10.88 .7 7.60 9.19 9.53 10.22 10.91 11.22 .8 7.14 8.62 8.94 9.59 10.24 10.53 .9 7.66 9.26 9.60 10.30 10.99 11.30 1.0 6.87 8.31 8.61 9.24 9.86 10.14 1 SM-3 1 ( NA ) STRIP NUMBER = 6 ( DT ) UNIT TIME OF UNIT-GRAPH(HOUR) = .10 ( XL ) BASIN-LENGTH(KM) = 2.85 (COFF) RUNOFF COEFFICIENT = .75 (BET ) INITIAL CONCENTRATION TIME = .00 ZONING LENGTH AREA(I) ACCUMU. WIDTH TIME NUMBER (KM) (SQ.KM) AREA(I) (KM) (HR) 1 .35 .150 .150 .429 .021 2 .50 .870 1.020 1.740 .019 3 .50 .970 1.990 1.940 .029 4 .50 .710 2.700 1.420 .048 5 .50 .390 3.090 .780 .073 6 .50 .150 3.240 .300 .073 1 CONCENTRATED LENGTH AND AREA TIME LENGTH AREA (HOUR) (KM) (SQ.KM) .1 1.66 2.434 .2 2.42 .676 .3 2.85 .130 C1 = .319 C2 = .681 1 AREA-ROUTING UNIT-HYDROGRAPH TIME AREA I=2.7780 (I1 + I2)/2 C1 * (1) C2 * (4) (2) + (3) (HR.) (KM**2) * AREA = (1) = (2) = (3) = (4) .1 2.434 6.761 3.380 1.079 .000 1.0795 .2 .676 1.878 4.319 1.379 .735 2.1141 .3 .130 .362 1.120 .358 1.439 1.7966 .4 .000 .000 .181 .058 1.223 1.2808 .5 .000 .000 .000 .000 .872 .8718 .6 .000 .000 .000 .000 .593 .5934 .7 .000 .000 .000 .000 .404 .4039 .8 .000 .000 .000 .000 .275 .2749 .9 .000 .000 .000 .000 .187 .1871 1.0 .000 .000 .000 .000 .127 .1274 1.1 .000 .000 .000 .000 .087 .0867 1.2 .000 .000 .000 .000 .059 .0590 1.3 .000 .000 .000 .000 .040 .0402 1.4 .000 .000 .000 .000 .027 .0273 1.5 .000 .000 .000 .000 .019 .0186 1.6 .000 .000 .000 .000 .013 .0127 1.7 .000 .000 .000 .000 .009 .0086 1.8 .000 .000 .000 .000 .006 .0059 1.9 .000 .000 .000 .000 .004 .0040 2.0 .000 .000 .000 .000 .003 .0027 2.1 .000 .000 .000 .000 .002 .0019 2.2 .000 .000 .000 .000 .001 .0013 2.3 .000 .000 .000 .000 .001 .0009 2.4 .000 .000 .000 .000 .001 .0006 2.5 .000 .000 .000 .000 .000 .0004 2.6 .000 .000 .000 .000 .000 .0003 2.7 .000 .000 .000 .000 .000 .0002 2.8 .000 .000 .000 .000 .000 .0001 2.9 .000 .000 .000 .000 .000 .0001 3.0 .000 .000 .000 .000 .000 .0001 3.1 .000 .000 .000 .000 .000 .0000 3.2 .000 .000 .000 .000 .000 .0000 3.3 .000 .000 .000 .000 .000 .0000 3.4 .000 .000 .000 .000 .000 .0000 3.5 .000 .000 .000 .000 .000 .0000 3.6 .000 .000 .000 .000 .000 .0000 3.7 .000 .000 .000 .000 .000 .0000 3.8 .000 .000 .000 .000 .000 .0000 3.9 .000 .000 .000 .000 .000 .0000 4.0 .000 .000 .000 .000 .000 .0000 4.1 .000 .000 .000 .000 .000 .0000 4.2 .000 .000 .000 .000 .000 .0000 4.3 .000 .000 .000 .000 .000 .0000 4.4 .000 .000 .000 .000 .000 .0000 4.5 .000 .000 .000 .000 .000 .0000 4.6 .000 .000 .000 .000 .000 .0000 4.7 .000 .000 .000 .000 .000 .0000 4.8 .000 .000 .000 .000 .000 .0000 4.9 .000 .000 .000 .000 .000 .0000 5.0 .000 .000 .000 .000 .000 .0000 1 FLOOD HYDROGRAPH BY AREA-ROUTING UNIT-HYDROGRAPH METHOD BASIN AREA = 3.24SQ.KM BASIN LENGTH = 2.85KM TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .34 .41 .42 .45 .48 .50 .2 1.84 2.23 2.31 2.48 2.65 2.72 .3 5.88 7.11 7.37 7.91 8.44 8.68 .4 13.56 16.38 16.99 18.23 19.45 20.00 .5 23.67 28.61 29.66 31.83 33.96 34.93 .6 32.45 39.21 40.66 43.62 46.55 47.87 .7 38.34 46.34 48.05 51.55 55.01 56.57 .8 42.07 50.85 52.72 56.57 60.36 62.07 .9 44.58 53.88 55.86 59.94 63.95 65.77 1.0 40.51 48.96 50.76 54.47 58.12 59.77 1.1 29.94 36.18 37.51 40.25 42.95 44.17 1.2 20.71 25.03 25.95 27.85 29.71 30.56 1.3 14.10 17.04 17.66 18.95 20.22 20.80 1.4 9.59 11.60 12.02 12.90 13.76 14.16 1.5 6.53 7.89 8.18 8.78 9.37 9.64 1.6 4.45 5.37 5.57 5.98 6.38 6.56 1.7 3.03 3.66 3.79 4.07 4.34 4.46 1.8 2.06 2.49 2.58 2.77 2.95 3.04 1.9 1.40 1.69 1.76 1.88 2.01 2.07 2.0 .95 1.15 1.20 1.28 1.37 1.41 2.1 .65 .78 .81 .87 .93 .96 2.2 .44 .53 .55 .59 .63 .65 2.3 .30 .36 .38 .40 .43 .44 2.4 .20 .25 .26 .28 .29 .30 2.5 .14 .17 .17 .19 .20 .21 2.6 .09 .11 .12 .13 .14 .14 2.7 .06 .08 .08 .09 .09 .10 2.8 .04 .05 .06 .06 .06 .06 2.9 .03 .04 .04 .04 .04 .04 3.0 .02 .02 .03 .03 .03 .03 3.1 .01 .02 .02 .02 .02 .02 3.2 .01 .01 .01 .01 .01 .01 3.3 .01 .01 .01 .01 .01 .01 3.4 .00 .01 .01 .01 .01 .01 3.5 .00 .00 .00 .00 .00 .00 3.6 .00 .00 .00 .00 .00 .00 3.7 .00 .00 .00 .00 .00 .00 3.8 .00 .00 .00 .00 .00 .00 3.9 .00 .00 .00 .00 .00 .00 4.0 .00 .00 .00 .00 .00 .00 4.1 .00 .00 .00 .00 .00 .00 4.2 .00 .00 .00 .00 .00 .00 4.3 .00 .00 .00 .00 .00 .00 4.4 .00 .00 .00 .00 .00 .00 4.5 .00 .00 .00 .00 .00 .00 4.6 .00 .00 .00 .00 .00 .00 4.7 .00 .00 .00 .00 .00 .00 4.8 .00 .00 .00 .00 .00 .00 4.9 .00 .00 .00 .00 .00 .00 5.0 .00 .00 .00 .00 .00 .00