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 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 .15 .17 .18 .19 .20 .2 .64 .74 .82 .87 .94 1.00 .3 1.88 2.18 2.39 2.56 2.75 2.93 .4 3.99 4.62 5.07 5.41 5.83 6.21 .5 6.24 7.23 7.94 8.48 9.13 9.72 .6 7.41 8.58 9.43 10.06 10.83 11.54 .7 7.68 8.90 9.78 10.44 11.24 11.97 .8 7.70 8.92 9.80 10.46 11.26 12.00 .9 7.72 8.94 9.83 10.49 11.29 12.03 1.0 5.51 6.38 7.01 7.48 8.05 8.58 1.1 2.18 2.52 2.77 2.96 3.18 3.39 1.2 .81 .94 1.03 1.10 1.19 1.27 1.3 .30 .35 .39 .41 .44 .47 1.4 .11 .13 .14 .15 .17 .18 1.5 .04 .05 .05 .06 .06 .07 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 56.42 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 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 .23 .25 .27 .29 .31 .2 1.06 1.23 1.35 1.44 1.55 1.65 .3 3.28 3.79 4.17 4.45 4.79 5.10 .4 7.30 8.45 9.29 9.92 10.68 11.38 .5 12.20 14.12 15.52 16.57 17.84 19.00 .6 15.71 18.20 20.00 21.34 22.98 24.48 .7 17.36 20.11 22.10 23.59 25.39 27.06 .8 18.02 20.87 22.94 24.48 26.36 28.08 .9 18.36 21.26 23.36 24.93 26.84 28.60 1.0 15.12 17.51 19.24 20.54 22.11 23.56 1.1 8.82 10.21 11.22 11.98 12.89 13.74 1.2 4.53 5.25 5.76 6.15 6.62 7.06 1.3 2.33 2.70 2.96 3.16 3.40 3.63 1.4 1.20 1.39 1.52 1.62 1.75 1.86 1.5 .61 .71 .78 .83 .90 .96 1.6 .32 .37 .40 .43 .46 .49 1.7 .16 .19 .21 .22 .24 .25 1.8 .08 .10 .11 .11 .12 .13 1.9 .04 .05 .05 .06 .06 .07 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 56.42 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 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 .19 .22 .25 .26 .28 .30 .2 1.10 1.28 1.40 1.50 1.61 1.72 .3 3.60 4.16 4.58 4.88 5.26 5.60 .4 8.43 9.77 10.73 11.46 12.33 13.14 .5 14.99 17.37 19.08 20.37 21.93 23.37 .6 20.89 24.20 26.59 28.38 30.56 32.56 .7 24.84 28.76 31.61 33.74 36.32 38.70 .8 27.22 31.52 34.64 36.97 39.80 42.41 .9 28.74 33.29 36.58 39.04 42.03 44.79 1.0 26.42 30.60 33.63 35.89 38.64 41.18 1.1 19.64 22.74 24.99 26.67 28.72 30.60 1.2 13.16 15.23 16.74 17.87 19.24 20.50 1.3 8.68 10.05 11.04 11.79 12.69 13.52 1.4 5.72 6.63 7.28 7.77 8.37 8.92 1.5 3.78 4.37 4.80 5.13 5.52 5.88 1.6 2.49 2.88 3.17 3.38 3.64 3.88 1.7 1.64 1.90 2.09 2.23 2.40 2.56 1.8 1.08 1.25 1.38 1.47 1.58 1.69 1.9 .71 .83 .91 .97 1.05 1.11 2.0 .47 .55 .60 .64 .69 .73 2.1 .31 .36 .40 .42 .45 .48 2.2 .21 .24 .26 .28 .30 .32 2.3 .14 .16 .17 .18 .20 .21 2.4 .09 .10 .11 .12 .13 .14 2.5 .06 .07 .07 .08 .09 .09 2.6 .04 .04 .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 56.42 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 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 .18 .19 .21 .22 .24 .2 .92 1.06 1.16 1.24 1.34 1.43 .3 3.13 3.62 3.98 4.25 4.58 4.88 .4 7.69 8.91 9.79 10.45 11.25 11.99 .5 14.47 16.76 18.41 19.65 21.16 22.55 .6 21.61 25.02 27.50 29.35 31.60 33.67 .7 27.49 31.84 34.98 37.34 40.20 42.84 .8 31.79 36.81 40.45 43.18 46.49 49.53 .9 34.88 40.40 44.39 47.39 51.01 54.36 1.0 34.54 40.00 43.96 46.92 50.51 53.82 1.1 29.54 34.21 37.60 40.13 43.20 46.04 1.2 23.00 26.64 29.27 31.25 33.64 35.85 1.3 17.20 19.92 21.89 23.36 25.15 26.80 1.4 12.74 14.76 16.22 17.31 18.64 19.86 1.5 9.44 10.94 12.02 12.83 13.81 14.72 1.6 7.00 8.10 8.91 9.51 10.23 10.91 1.7 5.19 6.01 6.60 7.04 7.58 8.08 1.8 3.84 4.45 4.89 5.22 5.62 5.99 1.9 2.85 3.30 3.62 3.87 4.16 4.44 2.0 2.11 2.44 2.69 2.87 3.09 3.29 2.1 1.56 1.81 1.99 2.12 2.29 2.44 2.2 1.16 1.34 1.47 1.57 1.69 1.81 2.3 .86 .99 1.09 1.17 1.26 1.34 2.4 .64 .74 .81 .86 .93 .99 2.5 .47 .55 .60 .64 .69 .73 2.6 .35 .40 .44 .47 .51 .54 2.7 .26 .30 .33 .35 .38 .40 2.8 .19 .22 .24 .26 .28 .30 2.9 .14 .16 .18 .19 .21 .22 3.0 .11 .12 .13 .14 .15 .16 3.1 .08 .09 .10 .11 .11 .12 3.2 .06 .07 .07 .08 .08 .09 3.3 .04 .05 .05 .06 .06 .07 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 .01 .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