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 BL-1 1 ( NA ) STRIP NUMBER = 3 ( DT ) UNIT TIME OF UNIT-GRAPH(HOUR) = .10 ( XL ) BASIN-LENGTH(KM) = 1.44 (COFF) RUNOFF COEFFICIENT = .76 (BET ) INITIAL CONCENTRATION TIME = .00 ZONING LENGTH AREA(I) ACCUMU. WIDTH TIME NUMBER (KM) (SQ.KM) AREA(I) (KM) (HR) 1 .50 .180 .180 .360 .023 2 .50 .220 .400 .440 .048 3 .44 .100 .500 .227 .039 1 CONCENTRATED LENGTH AND AREA TIME LENGTH AREA (HOUR) (KM) (SQ.KM) .1 1.33 .476 .2 1.44 .024 C1 = .627 C2 = .373 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 .476 1.321 .661 .414 .000 .4142 .2 .024 .068 .694 .435 .155 .5899 .3 .000 .000 .034 .021 .220 .2413 .4 .000 .000 .000 .000 .090 .0900 .5 .000 .000 .000 .000 .034 .0336 .6 .000 .000 .000 .000 .013 .0125 .7 .000 .000 .000 .000 .005 .0047 .8 .000 .000 .000 .000 .002 .0017 .9 .000 .000 .000 .000 .001 .0007 1.0 .000 .000 .000 .000 .000 .0002 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 = .50SQ.KM BASIN LENGTH = 1.44KM TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .13 .16 .16 .18 .19 .19 .2 .65 .78 .81 .87 .93 .95 .3 1.90 2.30 2.38 2.55 2.73 2.80 .4 4.02 4.86 5.04 5.41 5.77 5.93 .5 6.30 7.61 7.89 8.47 9.04 9.29 .6 7.48 9.04 9.37 10.05 10.73 11.03 .7 7.75 9.37 9.72 10.43 11.13 11.44 .8 7.77 9.40 9.74 10.45 11.15 11.47 .9 7.80 9.42 9.77 10.48 11.18 11.50 1.0 5.56 6.72 6.96 7.47 7.97 8.20 1.1 2.20 2.65 2.75 2.95 3.15 3.24 1.2 .82 .99 1.03 1.10 1.18 1.21 1.3 .31 .37 .38 .41 .44 .45 1.4 .11 .14 .14 .15 .16 .17 1.5 .04 .05 .05 .06 .06 .06 1.6 .02 .02 .02 .02 .02 .02 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 BL-2 1 ( NA ) STRIP NUMBER = 4 ( DT ) UNIT TIME OF UNIT-GRAPH(HOUR) = .10 ( XL ) BASIN-LENGTH(KM) = 1.88 (COFF) RUNOFF COEFFICIENT = .76 (BET ) INITIAL CONCENTRATION TIME = .00 ZONING LENGTH AREA(I) ACCUMU. WIDTH TIME NUMBER (KM) (SQ.KM) AREA(I) (KM) (HR) 1 .50 .220 .220 .440 .023 2 .50 .530 .750 1.060 .048 3 .50 .310 1.060 .620 .048 4 .33 .150 1.210 .455 .037 1 CONCENTRATED LENGTH AND AREA TIME LENGTH AREA (HOUR) (KM) (SQ.KM) .1 1.31 .941 .2 1.83 .269 C1 = .486 C2 = .514 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 .941 2.615 1.307 .636 .000 .6355 .2 .269 .747 1.681 .817 .327 1.1436 .3 .000 .000 .373 .182 .588 .7692 .4 .000 .000 .000 .000 .395 .3952 .5 .000 .000 .000 .000 .203 .2031 .6 .000 .000 .000 .000 .104 .1044 .7 .000 .000 .000 .000 .054 .0536 .8 .000 .000 .000 .000 .028 .0276 .9 .000 .000 .000 .000 .014 .0142 1.0 .000 .000 .000 .000 .007 .0073 1.1 .000 .000 .000 .000 .004 .0037 1.2 .000 .000 .000 .000 .002 .0019 1.3 .000 .000 .000 .000 .001 .0010 1.4 .000 .000 .000 .000 .001 .0005 1.5 .000 .000 .000 .000 .000 .0003 1.6 .000 .000 .000 .000 .000 .0001 1.7 .000 .000 .000 .000 .000 .0001 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 = 1.21SQ.KM BASIN LENGTH = 1.88KM TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .20 .24 .25 .27 .29 .30 .2 1.07 1.29 1.34 1.44 1.53 1.58 .3 3.31 4.00 4.14 4.44 4.74 4.88 .4 7.37 8.91 9.23 9.91 10.57 10.87 .5 12.31 14.88 15.43 16.55 17.66 18.16 .6 15.86 19.17 19.87 21.32 22.75 23.40 .7 17.53 21.18 21.96 23.57 25.14 25.86 .8 18.19 21.99 22.79 24.46 26.10 26.84 .9 18.53 22.39 23.22 24.91 26.58 27.33 1.0 15.26 18.45 19.12 20.52 21.89 22.52 1.1 8.90 10.76 11.15 11.96 12.77 13.13 1.2 4.57 5.53 5.73 6.15 6.56 6.75 1.3 2.35 2.84 2.94 3.16 3.37 3.47 1.4 1.21 1.46 1.51 1.62 1.73 1.78 1.5 .62 .75 .78 .83 .89 .92 1.6 .32 .39 .40 .43 .46 .47 1.7 .16 .20 .21 .22 .23 .24 1.8 .08 .10 .11 .11 .12 .12 1.9 .04 .05 .05 .06 .06 .06 2.0 .02 .03 .03 .03 .03 .03 2.1 .01 .01 .01 .02 .02 .02 2.2 .01 .01 .01 .01 .01 .01 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 BL-3 1 ( NA ) STRIP NUMBER = 5 ( DT ) UNIT TIME OF UNIT-GRAPH(HOUR) = .10 ( XL ) BASIN-LENGTH(KM) = 2.41 (COFF) RUNOFF COEFFICIENT = .76 (BET ) INITIAL CONCENTRATION TIME = .00 ZONING LENGTH AREA(I) ACCUMU. WIDTH TIME NUMBER (KM) (SQ.KM) AREA(I) (KM) (HR) 1 .50 .220 .220 .440 .023 2 .50 .770 .990 1.540 .048 3 .50 .520 1.510 1.040 .048 4 .50 .450 1.960 .900 .073 5 .41 .090 2.050 .220 .053 1 CONCENTRATED LENGTH AND AREA TIME LENGTH AREA (HOUR) (KM) (SQ.KM) .1 1.31 1.311 .2 2.07 .665 .3 2.41 .075 C1 = .340 C2 = .660 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 1.311 3.641 1.820 .620 .000 .6197 .2 .665 1.847 2.744 .934 .409 1.3427 .3 .075 .207 1.027 .350 .886 1.2352 .4 .000 .000 .104 .035 .815 .8500 .5 .000 .000 .000 .000 .561 .5607 .6 .000 .000 .000 .000 .370 .3698 .7 .000 .000 .000 .000 .244 .2440 .8 .000 .000 .000 .000 .161 .1609 .9 .000 .000 .000 .000 .106 .1061 1.0 .000 .000 .000 .000 .070 .0700 1.1 .000 .000 .000 .000 .046 .0462 1.2 .000 .000 .000 .000 .030 .0305 1.3 .000 .000 .000 .000 .020 .0201 1.4 .000 .000 .000 .000 .013 .0133 1.5 .000 .000 .000 .000 .009 .0087 1.6 .000 .000 .000 .000 .006 .0058 1.7 .000 .000 .000 .000 .004 .0038 1.8 .000 .000 .000 .000 .003 .0025 1.9 .000 .000 .000 .000 .002 .0017 2.0 .000 .000 .000 .000 .001 .0011 2.1 .000 .000 .000 .000 .001 .0007 2.2 .000 .000 .000 .000 .000 .0005 2.3 .000 .000 .000 .000 .000 .0003 2.4 .000 .000 .000 .000 .000 .0002 2.5 .000 .000 .000 .000 .000 .0001 2.6 .000 .000 .000 .000 .000 .0001 2.7 .000 .000 .000 .000 .000 .0001 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 = 2.05SQ.KM BASIN LENGTH = 2.41KM TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .20 .24 .25 .26 .28 .29 .2 1.11 1.35 1.40 1.50 1.60 1.64 .3 3.63 4.39 4.55 4.88 5.21 5.36 .4 8.51 10.29 10.67 11.45 12.21 12.56 .5 15.14 18.29 18.97 20.35 21.71 22.33 .6 21.09 25.49 26.43 28.36 30.26 31.12 .7 25.07 30.30 31.41 33.71 35.97 36.99 .8 27.47 33.20 34.42 36.94 39.41 40.53 .9 29.01 35.06 36.35 39.01 41.62 42.80 1.0 26.67 32.24 33.42 35.86 38.26 39.35 1.1 19.82 23.95 24.83 26.65 28.43 29.24 1.2 13.28 16.05 16.64 17.85 19.05 19.59 1.3 8.76 10.59 10.97 11.78 12.57 12.92 1.4 5.78 6.98 7.24 7.77 8.29 8.52 1.5 3.81 4.61 4.78 5.12 5.47 5.62 1.6 2.51 3.04 3.15 3.38 3.61 3.71 1.7 1.66 2.00 2.08 2.23 2.38 2.45 1.8 1.09 1.32 1.37 1.47 1.57 1.61 1.9 .72 .87 .90 .97 1.03 1.06 2.0 .48 .58 .60 .64 .68 .70 2.1 .31 .38 .39 .42 .45 .46 2.2 .21 .25 .26 .28 .30 .31 2.3 .14 .17 .17 .18 .20 .20 2.4 .09 .11 .11 .12 .13 .13 2.5 .06 .07 .07 .08 .09 .09 2.6 .04 .05 .05 .05 .06 .06 2.7 .03 .03 .03 .03 .04 .04 2.8 .02 .02 .02 .02 .02 .03 2.9 .01 .01 .01 .02 .02 .02 3.0 .01 .01 .01 .01 .01 .01 3.1 .00 .01 .01 .01 .01 .01 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 BL-4 1 ( NA ) STRIP NUMBER = 6 ( DT ) UNIT TIME OF UNIT-GRAPH(HOUR) = .10 ( XL ) BASIN-LENGTH(KM) = 3.00 (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 .50 .220 .220 .440 .023 2 .50 .770 .990 1.540 .048 3 .50 .620 1.610 1.240 .048 4 .50 .730 2.340 1.460 .073 5 .50 .370 2.710 .740 .073 6 .50 .150 2.860 .300 .073 1 CONCENTRATED LENGTH AND AREA TIME LENGTH AREA (HOUR) (KM) (SQ.KM) .1 1.31 1.372 .2 2.06 1.014 .3 2.75 .399 .4 3.00 .075 C1 = .259 C2 = .741 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 1.372 3.812 1.906 .494 .000 .4937 .2 1.014 2.817 3.314 .858 .366 1.2242 .3 .399 1.109 1.963 .508 .907 1.4155 .4 .075 .207 .658 .170 1.049 1.2193 .5 .000 .000 .104 .027 .904 .9304 .6 .000 .000 .000 .000 .689 .6894 .7 .000 .000 .000 .000 .511 .5109 .8 .000 .000 .000 .000 .379 .3786 .9 .000 .000 .000 .000 .281 .2805 1.0 .000 .000 .000 .000 .208 .2079 1.1 .000 .000 .000 .000 .154 .1540 1.2 .000 .000 .000 .000 .114 .1141 1.3 .000 .000 .000 .000 .085 .0846 1.4 .000 .000 .000 .000 .063 .0627 1.5 .000 .000 .000 .000 .046 .0464 1.6 .000 .000 .000 .000 .034 .0344 1.7 .000 .000 .000 .000 .026 .0255 1.8 .000 .000 .000 .000 .019 .0189 1.9 .000 .000 .000 .000 .014 .0140 2.0 .000 .000 .000 .000 .010 .0104 2.1 .000 .000 .000 .000 .008 .0077 2.2 .000 .000 .000 .000 .006 .0057 2.3 .000 .000 .000 .000 .004 .0042 2.4 .000 .000 .000 .000 .003 .0031 2.5 .000 .000 .000 .000 .002 .0023 2.6 .000 .000 .000 .000 .002 .0017 2.7 .000 .000 .000 .000 .001 .0013 2.8 .000 .000 .000 .000 .001 .0009 2.9 .000 .000 .000 .000 .001 .0007 3.0 .000 .000 .000 .000 .001 .0005 3.1 .000 .000 .000 .000 .000 .0004 3.2 .000 .000 .000 .000 .000 .0003 3.3 .000 .000 .000 .000 .000 .0002 3.4 .000 .000 .000 .000 .000 .0002 3.5 .000 .000 .000 .000 .000 .0001 3.6 .000 .000 .000 .000 .000 .0001 3.7 .000 .000 .000 .000 .000 .0001 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 = 2.86SQ.KM BASIN LENGTH = 3.00KM TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .15 .19 .19 .21 .22 .23 .2 .92 1.12 1.16 1.24 1.33 1.36 .3 3.16 3.82 3.96 4.25 4.53 4.66 .4 7.76 9.38 9.73 10.44 11.14 11.46 .5 14.60 17.65 18.30 19.64 20.95 21.55 .6 21.81 26.36 27.33 29.32 31.29 32.18 .7 27.75 33.54 34.77 37.31 39.81 40.94 .8 32.09 38.78 40.20 43.14 46.03 47.34 .9 35.21 42.56 44.12 47.34 50.51 51.95 1.0 34.86 42.14 43.69 46.88 50.02 51.44 1.1 29.82 36.04 37.37 40.09 42.78 43.99 1.2 23.22 28.06 29.10 31.22 33.31 34.26 1.3 17.36 20.98 21.75 23.34 24.91 25.61 1.4 12.86 15.55 16.12 17.30 18.46 18.98 1.5 9.53 11.52 11.94 12.82 13.68 14.06 1.6 7.06 8.54 8.85 9.50 10.13 10.42 1.7 5.23 6.33 6.56 7.04 7.51 7.72 1.8 3.88 4.69 4.86 5.21 5.56 5.72 1.9 2.87 3.47 3.60 3.86 4.12 4.24 2.0 2.13 2.57 2.67 2.86 3.06 3.14 2.1 1.58 1.91 1.98 2.12 2.26 2.33 2.2 1.17 1.41 1.47 1.57 1.68 1.73 2.3 .87 1.05 1.09 1.17 1.24 1.28 2.4 .64 .78 .80 .86 .92 .95 2.5 .48 .58 .60 .64 .68 .70 2.6 .35 .43 .44 .47 .51 .52 2.7 .26 .32 .33 .35 .37 .39 2.8 .19 .23 .24 .26 .28 .29 2.9 .14 .17 .18 .19 .21 .21 3.0 .11 .13 .13 .14 .15 .16 3.1 .08 .10 .10 .11 .11 .12 3.2 .06 .07 .07 .08 .08 .09 3.3 .04 .05 .05 .06 .06 .06 3.4 .03 .04 .04 .04 .05 .05 3.5 .02 .03 .03 .03 .03 .04 3.6 .02 .02 .02 .02 .03 .03 3.7 .01 .02 .02 .02 .02 .02 3.8 .01 .01 .01 .01 .01 .01 3.9 .01 .01 .01 .01 .01 .01 4.0 .01 .01 .01 .01 .01 .01 4.1 .00 .00 .00 .01 .01 .01 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