1 RETURN INTENSITY PERIOD RAINFALL 5 56.42 10 65.34 20 71.80 30 76.64 50 82.51 80 87.92 1 RAINFALL HYETOGRAPH TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .41 .48 .52 .56 .60 .64 .2 1.45 1.68 1.85 1.97 2.12 2.26 .3 3.67 4.25 4.67 4.99 5.37 5.72 .4 6.49 7.52 8.26 8.82 9.50 10.12 .5 8.08 9.36 10.29 10.98 11.82 12.60 .6 7.31 8.46 9.30 9.92 10.69 11.39 .7 7.53 8.72 9.59 10.23 11.02 11.74 .8 7.07 8.19 9.00 9.60 10.34 11.02 .9 7.59 8.79 9.66 10.31 11.10 11.83 1.0 6.81 7.89 8.67 9.25 9.96 10.61 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 .33 .37 .39 .42 .45 .2 1.40 1.62 1.78 1.90 2.05 2.18 .3 4.07 4.71 5.17 5.52 5.95 6.34 .4 8.52 9.87 10.84 11.57 12.46 13.28 .5 13.16 15.24 16.75 17.88 19.25 20.51 .6 15.36 17.78 19.54 20.86 22.46 23.93 .7 15.73 18.22 20.02 21.37 23.00 24.51 .8 15.69 18.17 19.97 21.31 22.95 24.45 .9 15.71 18.20 20.00 21.35 22.98 24.49 1.0 10.79 12.50 13.74 14.66 15.79 16.82 1.1 3.77 4.36 4.79 5.11 5.51 5.87 1.2 1.30 1.50 1.65 1.76 1.90 2.02 1.3 .45 .52 .57 .61 .65 .70 1.4 .15 .18 .20 .21 .23 .24 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 56.42 10 65.34 20 71.80 30 76.64 50 82.51 80 87.92 1 RAINFALL HYETOGRAPH TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .41 .48 .52 .56 .60 .64 .2 1.45 1.68 1.85 1.97 2.12 2.26 .3 3.67 4.25 4.67 4.99 5.37 5.72 .4 6.49 7.52 8.26 8.82 9.50 10.12 .5 8.08 9.36 10.29 10.98 11.82 12.60 .6 7.31 8.46 9.30 9.92 10.69 11.39 .7 7.53 8.72 9.59 10.23 11.02 11.74 .8 7.07 8.19 9.00 9.60 10.34 11.02 .9 7.59 8.79 9.66 10.31 11.10 11.83 1.0 6.81 7.89 8.67 9.25 9.96 10.61 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 .65 .71 .76 .82 .87 .2 2.85 3.30 3.62 3.87 4.16 4.44 .3 8.55 9.90 10.88 11.61 12.50 13.32 .4 18.52 21.45 23.57 25.16 27.08 28.86 .5 29.86 34.58 38.00 40.56 43.67 46.54 .6 36.83 42.66 46.87 50.03 53.87 57.40 .7 39.37 45.59 50.10 53.47 57.57 61.34 .8 40.09 46.43 51.02 54.46 58.63 62.47 .9 40.45 46.85 51.48 54.95 59.16 63.04 1.0 31.04 35.95 39.50 42.16 45.39 48.37 1.1 15.29 17.71 19.46 20.78 22.37 23.83 1.2 6.90 7.99 8.78 9.37 10.09 10.75 1.3 3.11 3.60 3.96 4.22 4.55 4.85 1.4 1.40 1.62 1.78 1.90 2.05 2.19 1.5 .63 .73 .80 .86 .92 .99 1.6 .29 .33 .36 .39 .42 .44 1.7 .13 .15 .16 .17 .19 .20 1.8 .06 .07 .07 .08 .08 .09 1.9 .03 .03 .03 .04 .04 .04 2.0 .01 .01 .02 .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 56.42 10 65.34 20 71.80 30 76.64 50 82.51 80 87.92 1 RAINFALL HYETOGRAPH TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .41 .48 .52 .56 .60 .64 .2 1.45 1.68 1.85 1.97 2.12 2.26 .3 3.67 4.25 4.67 4.99 5.37 5.72 .4 6.49 7.52 8.26 8.82 9.50 10.12 .5 8.08 9.36 10.29 10.98 11.82 12.60 .6 7.31 8.46 9.30 9.92 10.69 11.39 .7 7.53 8.72 9.59 10.23 11.02 11.74 .8 7.07 8.19 9.00 9.60 10.34 11.02 .9 7.59 8.79 9.66 10.31 11.10 11.83 1.0 6.81 7.89 8.67 9.25 9.96 10.61 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 .33 .39 .42 .45 .49 .52 .2 1.83 2.12 2.32 2.48 2.67 2.85 .3 5.83 6.75 7.42 7.92 8.52 9.08 .4 13.43 15.55 17.09 18.24 19.64 20.93 .5 23.45 27.16 29.85 31.86 34.30 36.55 .6 32.14 37.23 40.91 43.66 47.01 50.09 .7 37.99 43.99 48.34 51.60 55.55 59.19 .8 41.68 48.27 53.04 56.62 60.96 64.95 .9 44.17 51.15 56.20 59.99 64.59 68.82 1.0 40.13 46.48 51.08 54.52 58.69 62.54 1.1 29.66 34.35 37.75 40.29 43.38 46.22 1.2 20.52 23.76 26.11 27.87 30.01 31.97 1.3 13.97 16.17 17.77 18.97 20.42 21.76 1.4 9.51 11.01 12.10 12.91 13.90 14.81 1.5 6.47 7.49 8.23 8.79 9.46 10.08 1.6 4.40 5.10 5.60 5.98 6.44 6.86 1.7 3.00 3.47 3.81 4.07 4.38 4.67 1.8 2.04 2.36 2.60 2.77 2.98 3.18 1.9 1.39 1.61 1.77 1.89 2.03 2.16 2.0 .95 1.09 1.20 1.28 1.38 1.47 2.1 .64 .75 .82 .87 .94 1.00 2.2 .44 .51 .56 .59 .64 .68 2.3 .30 .35 .38 .40 .44 .46 2.4 .20 .23 .26 .28 .30 .32 2.5 .14 .16 .18 .19 .20 .22 2.6 .09 .11 .12 .13 .14 .15 2.7 .06 .07 .08 .09 .09 .10 2.8 .04 .05 .06 .06 .06 .07 2.9 .03 .03 .04 .04 .04 .05 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