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 SH-1 1 ( NA ) STRIP NUMBER = 3 ( DT ) UNIT TIME OF UNIT-GRAPH(HOUR) = .10 ( XL ) BASIN-LENGTH(KM) = .93 (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 .04 .050 .050 1.250 .000 2 .50 .250 .300 .500 .048 3 .39 .100 .400 .256 .049 1 CONCENTRATED LENGTH AND AREA TIME LENGTH AREA (HOUR) (KM) (SQ.KM) .1 .93 .400 C1 = .680 C2 = .320 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 .400 1.111 .556 .378 .000 .3778 .2 .000 .000 .556 .378 .121 .4987 .3 .000 .000 .000 .000 .160 .1596 .4 .000 .000 .000 .000 .051 .0511 .5 .000 .000 .000 .000 .016 .0163 .6 .000 .000 .000 .000 .005 .0052 .7 .000 .000 .000 .000 .002 .0017 .8 .000 .000 .000 .000 .001 .0005 .9 .000 .000 .000 .000 .000 .0002 1.0 .000 .000 .000 .000 .000 .0001 1.1 .000 .000 .000 .000 .000 .0000 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 = .40SQ.KM BASIN LENGTH = .93KM TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .12 .14 .15 .16 .17 .17 .2 .57 .69 .71 .77 .82 .84 .3 1.65 1.99 2.06 2.22 2.36 2.43 .4 3.44 4.15 4.30 4.62 4.93 5.07 .5 5.27 6.37 6.60 7.08 7.56 7.77 .6 6.09 7.36 7.63 8.19 8.73 8.98 .7 6.19 7.48 7.76 8.33 8.88 9.14 .8 6.16 7.44 7.72 8.28 8.83 9.08 .9 6.16 7.45 7.72 8.29 8.84 9.09 1.0 4.14 5.01 5.19 5.57 5.94 6.11 1.1 1.33 1.60 1.66 1.78 1.90 1.96 1.2 .42 .51 .53 .57 .61 .63 1.3 .14 .16 .17 .18 .19 .20 1.4 .04 .05 .05 .06 .06 .06 1.5 .01 .02 .02 .02 .02 .02 1.6 .00 .01 .01 .01 .01 .01 1.7 .00 .00 .00 .00 .00 .00 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 SH-2 1 ( NA ) STRIP NUMBER = 4 ( DT ) UNIT TIME OF UNIT-GRAPH(HOUR) = .10 ( XL ) BASIN-LENGTH(KM) = 1.49 (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 .04 .060 .060 1.500 .000 2 .50 .480 .540 .960 .048 3 .50 .300 .840 .600 .065 4 .45 .250 1.090 .556 .061 1 CONCENTRATED LENGTH AND AREA TIME LENGTH AREA (HOUR) (KM) (SQ.KM) .1 .94 .778 .2 1.49 .312 C1 = .445 C2 = .555 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 .778 2.163 1.081 .481 .000 .4813 .2 .312 .865 1.514 .674 .267 .9409 .3 .000 .000 .433 .193 .522 .7147 .4 .000 .000 .000 .000 .397 .3966 .5 .000 .000 .000 .000 .220 .2201 .6 .000 .000 .000 .000 .122 .1221 .7 .000 .000 .000 .000 .068 .0678 .8 .000 .000 .000 .000 .038 .0376 .9 .000 .000 .000 .000 .021 .0209 1.0 .000 .000 .000 .000 .012 .0116 1.1 .000 .000 .000 .000 .006 .0064 1.2 .000 .000 .000 .000 .004 .0036 1.3 .000 .000 .000 .000 .002 .0020 1.4 .000 .000 .000 .000 .001 .0011 1.5 .000 .000 .000 .000 .001 .0006 1.6 .000 .000 .000 .000 .000 .0003 1.7 .000 .000 .000 .000 .000 .0002 1.8 .000 .000 .000 .000 .000 .0001 1.9 .000 .000 .000 .000 .000 .0001 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 = 1.09SQ.KM BASIN LENGTH = 1.49KM TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .15 .18 .19 .20 .22 .22 .2 .83 1.01 1.04 1.12 1.19 1.23 .3 2.63 3.18 3.29 3.53 3.77 3.88 .4 5.97 7.21 7.48 8.03 8.56 8.81 .5 10.20 12.32 12.78 13.71 14.63 15.04 .6 13.50 16.31 16.91 18.14 19.36 19.91 .7 15.24 18.42 19.10 20.49 21.86 22.49 .8 16.04 19.39 20.10 21.57 23.01 23.67 .9 16.47 19.91 20.64 22.14 23.63 24.30 1.0 14.11 17.05 17.68 18.97 20.24 20.81 1.1 8.95 10.82 11.21 12.03 12.84 13.20 1.2 4.97 6.00 6.22 6.68 7.12 7.33 1.3 2.76 3.33 3.45 3.71 3.95 4.07 1.4 1.53 1.85 1.92 2.06 2.19 2.26 1.5 .85 1.03 1.06 1.14 1.22 1.25 1.6 .47 .57 .59 .63 .68 .69 1.7 .26 .32 .33 .35 .37 .39 1.8 .14 .18 .18 .19 .21 .21 1.9 .08 .10 .10 .11 .12 .12 2.0 .04 .05 .06 .06 .06 .07 2.1 .02 .03 .03 .03 .04 .04 2.2 .01 .02 .02 .02 .02 .02 2.3 .01 .01 .01 .01 .01 .01 2.4 .00 .01 .01 .01 .01 .01 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 SH-3 1 ( NA ) STRIP NUMBER = 6 ( DT ) UNIT TIME OF UNIT-GRAPH(HOUR) = .10 ( XL ) BASIN-LENGTH(KM) = 2.54 (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 .04 .060 .060 1.500 .000 2 .50 .480 .540 .960 .048 3 .50 .320 .860 .640 .065 4 .50 .530 1.390 1.060 .073 5 .50 .510 1.900 1.020 .065 6 .50 .180 2.080 .360 .073 1 CONCENTRATED LENGTH AND AREA TIME LENGTH AREA (HOUR) (KM) (SQ.KM) .1 .94 .794 .2 1.65 .706 .3 2.38 .521 .4 2.54 .058 C1 = .268 C2 = .732 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 .794 2.207 1.103 .295 .000 .2953 .2 .706 1.961 2.084 .558 .216 .7741 .3 .521 1.448 1.705 .456 .567 1.0232 .4 .058 .162 .805 .216 .749 .9648 .5 .000 .000 .081 .022 .707 .7283 .6 .000 .000 .000 .000 .533 .5334 .7 .000 .000 .000 .000 .391 .3906 .8 .000 .000 .000 .000 .286 .2860 .9 .000 .000 .000 .000 .209 .2095 1.0 .000 .000 .000 .000 .153 .1534 1.1 .000 .000 .000 .000 .112 .1123 1.2 .000 .000 .000 .000 .082 .0823 1.3 .000 .000 .000 .000 .060 .0602 1.4 .000 .000 .000 .000 .044 .0441 1.5 .000 .000 .000 .000 .032 .0323 1.6 .000 .000 .000 .000 .024 .0237 1.7 .000 .000 .000 .000 .017 .0173 1.8 .000 .000 .000 .000 .013 .0127 1.9 .000 .000 .000 .000 .009 .0093 2.0 .000 .000 .000 .000 .007 .0068 2.1 .000 .000 .000 .000 .005 .0050 2.2 .000 .000 .000 .000 .004 .0036 2.3 .000 .000 .000 .000 .003 .0027 2.4 .000 .000 .000 .000 .002 .0020 2.5 .000 .000 .000 .000 .001 .0014 2.6 .000 .000 .000 .000 .001 .0010 2.7 .000 .000 .000 .000 .001 .0008 2.8 .000 .000 .000 .000 .001 .0006 2.9 .000 .000 .000 .000 .000 .0004 3.0 .000 .000 .000 .000 .000 .0003 3.1 .000 .000 .000 .000 .000 .0002 3.2 .000 .000 .000 .000 .000 .0002 3.3 .000 .000 .000 .000 .000 .0001 3.4 .000 .000 .000 .000 .000 .0001 3.5 .000 .000 .000 .000 .000 .0001 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 = 2.08SQ.KM BASIN LENGTH = 2.54KM TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .09 .11 .12 .13 .13 .14 .2 .57 .69 .72 .77 .82 .85 .3 2.02 2.44 2.53 2.71 2.89 2.98 .4 5.10 6.16 6.38 6.85 7.31 7.52 .5 9.87 11.93 12.37 13.28 14.17 14.57 .6 15.25 18.43 19.11 20.51 21.88 22.50 .7 19.97 24.13 25.02 26.85 28.64 29.46 .8 23.45 28.34 29.38 31.53 33.64 34.60 .9 25.90 31.30 32.45 34.82 37.15 38.21 1.0 26.05 31.49 32.65 35.03 37.38 38.44 1.1 23.03 27.83 28.86 30.96 33.04 33.98 1.2 18.24 22.04 22.85 24.52 26.16 26.91 1.3 13.48 16.30 16.89 18.13 19.34 19.89 1.4 9.87 11.93 12.37 13.28 14.16 14.57 1.5 7.23 8.74 9.06 9.72 10.37 10.67 1.6 5.30 6.40 6.64 7.12 7.60 7.81 1.7 3.88 4.69 4.86 5.21 5.56 5.72 1.8 2.84 3.43 3.56 3.82 4.07 4.19 1.9 2.08 2.51 2.61 2.80 2.98 3.07 2.0 1.52 1.84 1.91 2.05 2.18 2.25 2.1 1.12 1.35 1.40 1.50 1.60 1.65 2.2 .82 .99 1.02 1.10 1.17 1.20 2.3 .60 .72 .75 .80 .86 .88 2.4 .44 .53 .55 .59 .63 .65 2.5 .32 .39 .40 .43 .46 .47 2.6 .23 .28 .29 .32 .34 .35 2.7 .17 .21 .22 .23 .25 .25 2.8 .13 .15 .16 .17 .18 .19 2.9 .09 .11 .12 .12 .13 .14 3.0 .07 .08 .08 .09 .10 .10 3.1 .05 .06 .06 .07 .07 .07 3.2 .04 .04 .05 .05 .05 .05 3.3 .03 .03 .03 .04 .04 .04 3.4 .02 .02 .02 .03 .03 .03 3.5 .01 .02 .02 .02 .02 .02 3.6 .01 .01 .01 .01 .01 .02 3.7 .01 .01 .01 .01 .01 .01 3.8 .01 .01 .01 .01 .01 .01 3.9 .00 .00 .01 .01 .01 .01 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 SH-4 1 ( NA ) STRIP NUMBER = 8 ( DT ) UNIT TIME OF UNIT-GRAPH(HOUR) = .10 ( XL ) BASIN-LENGTH(KM) = 3.54 (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 .04 .060 .060 1.500 .000 2 .50 .480 .540 .960 .048 3 .50 .320 .860 .640 .065 4 .50 .530 1.390 1.060 .073 5 .50 .540 1.930 1.080 .065 6 .50 .410 2.340 .820 .073 7 .50 .250 2.590 .500 .073 8 .50 .120 2.710 .240 .083 1 CONCENTRATED LENGTH AND AREA TIME LENGTH AREA (HOUR) (KM) (SQ.KM) .1 .94 .794 .2 1.65 .712 .3 2.38 .700 .4 3.06 .389 .5 3.54 .114 C1 = .189 C2 = .811 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 .794 2.207 1.103 .209 .000 .2085 .2 .712 1.979 2.093 .396 .169 .5646 .3 .700 1.945 1.962 .371 .458 .8287 .4 .389 1.080 1.512 .286 .672 .9579 .5 .114 .318 .699 .132 .777 .9089 .6 .000 .000 .159 .030 .737 .7672 .7 .000 .000 .000 .000 .622 .6222 .8 .000 .000 .000 .000 .505 .5046 .9 .000 .000 .000 .000 .409 .4093 1.0 .000 .000 .000 .000 .332 .3319 1.1 .000 .000 .000 .000 .269 .2692 1.2 .000 .000 .000 .000 .218 .2183 1.3 .000 .000 .000 .000 .177 .1771 1.4 .000 .000 .000 .000 .144 .1436 1.5 .000 .000 .000 .000 .116 .1165 1.6 .000 .000 .000 .000 .094 .0945 1.7 .000 .000 .000 .000 .077 .0766 1.8 .000 .000 .000 .000 .062 .0621 1.9 .000 .000 .000 .000 .050 .0504 2.0 .000 .000 .000 .000 .041 .0409 2.1 .000 .000 .000 .000 .033 .0331 2.2 .000 .000 .000 .000 .027 .0269 2.3 .000 .000 .000 .000 .022 .0218 2.4 .000 .000 .000 .000 .018 .0177 2.5 .000 .000 .000 .000 .014 .0143 2.6 .000 .000 .000 .000 .012 .0116 2.7 .000 .000 .000 .000 .009 .0094 2.8 .000 .000 .000 .000 .008 .0076 2.9 .000 .000 .000 .000 .006 .0062 3.0 .000 .000 .000 .000 .005 .0050 3.1 .000 .000 .000 .000 .004 .0041 3.2 .000 .000 .000 .000 .003 .0033 3.3 .000 .000 .000 .000 .003 .0027 3.4 .000 .000 .000 .000 .002 .0022 3.5 .000 .000 .000 .000 .002 .0018 3.6 .000 .000 .000 .000 .001 .0014 3.7 .000 .000 .000 .000 .001 .0012 3.8 .000 .000 .000 .000 .001 .0009 3.9 .000 .000 .000 .000 .001 .0008 4.0 .000 .000 .000 .000 .001 .0006 4.1 .000 .000 .000 .000 .001 .0005 4.2 .000 .000 .000 .000 .000 .0004 4.3 .000 .000 .000 .000 .000 .0003 4.4 .000 .000 .000 .000 .000 .0003 4.5 .000 .000 .000 .000 .000 .0002 4.6 .000 .000 .000 .000 .000 .0002 4.7 .000 .000 .000 .000 .000 .0001 4.8 .000 .000 .000 .000 .000 .0001 4.9 .000 .000 .000 .000 .000 .0001 5.0 .000 .000 .000 .000 .000 .0001 1 FLOOD HYDROGRAPH BY AREA-ROUTING UNIT-HYDROGRAPH METHOD BASIN AREA = 2.71SQ.KM BASIN LENGTH = 3.54KM TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .07 .08 .08 .09 .09 .10 .2 .40 .49 .51 .54 .58 .60 .3 1.46 1.76 1.83 1.96 2.09 2.15 .4 3.80 4.60 4.77 5.11 5.46 5.61 .5 7.69 9.30 9.64 10.34 11.03 11.35 .6 12.58 15.21 15.77 16.92 18.05 18.57 .7 17.66 21.34 22.12 23.74 25.33 26.05 .8 22.22 26.86 27.85 29.88 31.88 32.79 .9 25.99 31.41 32.57 34.94 37.29 38.34 1.0 27.88 33.69 34.93 37.48 40.00 41.13 1.1 27.19 32.86 34.07 36.56 39.01 40.11 1.2 24.57 29.70 30.79 33.04 35.25 36.25 1.3 20.85 25.20 26.12 28.03 29.91 30.76 1.4 17.08 20.64 21.40 22.96 24.50 25.20 1.5 13.85 16.74 17.36 18.62 19.87 20.44 1.6 11.23 13.58 14.08 15.10 16.12 16.57 1.7 9.11 11.01 11.42 12.25 13.07 13.44 1.8 7.39 8.93 9.26 9.94 10.60 10.90 1.9 5.99 7.24 7.51 8.06 8.60 8.84 2.0 4.86 5.87 6.09 6.53 6.97 7.17 2.1 3.94 4.76 4.94 5.30 5.65 5.82 2.2 3.20 3.86 4.01 4.30 4.59 4.72 2.3 2.59 3.13 3.25 3.49 3.72 3.83 2.4 2.10 2.54 2.63 2.83 3.02 3.10 2.5 1.71 2.06 2.14 2.29 2.45 2.52 2.6 1.38 1.67 1.73 1.86 1.98 2.04 2.7 1.12 1.36 1.41 1.51 1.61 1.65 2.8 .91 1.10 1.14 1.22 1.31 1.34 2.9 .74 .89 .92 .99 1.06 1.09 3.0 .60 .72 .75 .80 .86 .88 3.1 .49 .59 .61 .65 .70 .72 3.2 .39 .48 .49 .53 .56 .58 3.3 .32 .39 .40 .43 .46 .47 3.4 .26 .31 .32 .35 .37 .38 3.5 .21 .25 .26 .28 .30 .31 3.6 .17 .21 .21 .23 .24 .25 3.7 .14 .17 .17 .19 .20 .20 3.8 .11 .14 .14 .15 .16 .17 3.9 .09 .11 .11 .12 .13 .13 4.0 .07 .09 .09 .10 .11 .11 4.1 .06 .07 .07 .08 .09 .09 4.2 .05 .06 .06 .07 .07 .07 4.3 .04 .05 .05 .05 .06 .06 4.4 .03 .04 .04 .04 .05 .05 4.5 .03 .03 .03 .03 .04 .04 4.6 .02 .03 .03 .03 .03 .03 4.7 .02 .02 .02 .02 .02 .03 4.8 .01 .02 .02 .02 .02 .02 4.9 .01 .01 .01 .02 .02 .02 5.0 .01 .01 .01 .01 .01 .01