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 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 .18 .2 .56 .65 .72 .77 .83 .88 .3 1.63 1.89 2.08 2.22 2.39 2.54 .4 3.40 3.94 4.33 4.62 4.98 5.30 .5 5.22 6.05 6.64 7.09 7.63 8.13 .6 6.03 6.99 7.68 8.19 8.82 9.40 .7 6.13 7.10 7.81 8.33 8.97 9.56 .8 6.10 7.07 7.76 8.29 8.92 9.51 .9 6.11 7.07 7.77 8.29 8.93 9.51 1.0 4.10 4.75 5.22 5.57 6.00 6.40 1.1 1.31 1.52 1.67 1.78 1.92 2.05 1.2 .42 .49 .53 .57 .61 .65 1.3 .13 .16 .17 .18 .20 .21 1.4 .04 .05 .05 .06 .06 .07 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 56.42 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 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 .17 .19 .20 .22 .23 .2 .82 .96 1.05 1.12 1.21 1.29 .3 2.60 3.02 3.31 3.54 3.81 4.06 .4 5.91 6.85 7.53 8.03 8.65 9.22 .5 10.10 11.70 12.86 13.72 14.77 15.74 .6 13.37 15.48 17.01 18.16 19.55 20.83 .7 15.10 17.49 19.22 20.51 22.08 23.53 .8 15.89 18.40 20.22 21.59 23.24 24.76 .9 16.32 18.90 20.76 22.16 23.86 25.43 1.0 13.98 16.19 17.79 18.98 20.44 21.78 1.1 8.87 10.27 11.28 12.04 12.97 13.82 1.2 4.92 5.70 6.26 6.68 7.19 7.67 1.3 2.73 3.16 3.47 3.71 3.99 4.25 1.4 1.51 1.75 1.93 2.06 2.22 2.36 1.5 .84 .97 1.07 1.14 1.23 1.31 1.6 .47 .54 .59 .63 .68 .73 1.7 .26 .30 .33 .35 .38 .40 1.8 .14 .17 .18 .20 .21 .22 1.9 .08 .09 .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 .00 .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 56.42 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 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 .14 .14 .2 .57 .66 .72 .77 .83 .88 .3 2.00 2.31 2.54 2.71 2.92 3.11 .4 5.05 5.85 6.42 6.86 7.38 7.87 .5 9.78 11.33 12.45 13.29 14.31 15.24 .6 15.11 17.50 19.23 20.52 22.10 23.54 .7 19.78 22.91 25.17 26.87 28.93 30.82 .8 23.23 26.90 29.56 31.56 33.97 36.20 .9 25.66 29.71 32.65 34.85 37.52 39.98 1.0 25.81 29.89 32.85 35.06 37.75 40.22 1.1 22.82 26.42 29.04 30.99 33.37 35.55 1.2 18.07 20.93 22.99 24.54 26.42 28.16 1.3 13.36 15.47 17.00 18.14 19.53 20.81 1.4 9.78 11.33 12.45 13.29 14.31 15.24 1.5 7.16 8.30 9.12 9.73 10.48 11.16 1.6 5.25 6.08 6.68 7.13 7.67 8.17 1.7 3.84 4.45 4.89 5.22 5.62 5.99 1.8 2.81 3.26 3.58 3.82 4.11 4.38 1.9 2.06 2.39 2.62 2.80 3.01 3.21 2.0 1.51 1.75 1.92 2.05 2.21 2.35 2.1 1.10 1.28 1.41 1.50 1.62 1.72 2.2 .81 .94 1.03 1.10 1.18 1.26 2.3 .59 .69 .75 .80 .87 .92 2.4 .43 .50 .55 .59 .63 .68 2.5 .32 .37 .40 .43 .46 .50 2.6 .23 .27 .30 .32 .34 .36 2.7 .17 .20 .22 .23 .25 .27 2.8 .12 .14 .16 .17 .18 .19 2.9 .09 .11 .12 .12 .13 .14 3.0 .07 .08 .09 .09 .10 .10 3.1 .05 .06 .06 .07 .07 .08 3.2 .04 .04 .05 .05 .05 .06 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 .02 .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 56.42 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 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 .06 .07 .08 .09 .09 .10 .2 .40 .46 .51 .54 .59 .63 .3 1.44 1.67 1.84 1.96 2.11 2.25 .4 3.77 4.36 4.80 5.12 5.51 5.87 .5 7.62 8.82 9.70 10.35 11.14 11.87 .6 12.47 14.44 15.86 16.93 18.23 19.43 .7 17.49 20.26 22.26 23.76 25.58 27.26 .8 22.02 25.50 28.02 29.91 32.20 34.31 .9 25.75 29.82 32.77 34.98 37.65 40.12 1.0 27.62 31.99 35.15 37.52 40.39 43.04 1.1 26.94 31.19 34.28 36.59 39.39 41.98 1.2 24.34 28.19 30.98 33.07 35.60 37.93 1.3 20.65 23.92 26.28 28.06 30.20 32.18 1.4 16.92 19.60 21.53 22.99 24.75 26.37 1.5 13.72 15.89 17.46 18.64 20.07 21.39 1.6 11.13 12.89 14.16 15.12 16.28 17.34 1.7 9.03 10.45 11.49 12.26 13.20 14.07 1.8 7.32 8.48 9.32 9.94 10.71 11.41 1.9 5.94 6.88 7.56 8.07 8.68 9.25 2.0 4.82 5.58 6.13 6.54 7.04 7.50 2.1 3.91 4.52 4.97 5.30 5.71 6.09 2.2 3.17 3.67 4.03 4.30 4.63 4.94 2.3 2.57 2.97 3.27 3.49 3.76 4.00 2.4 2.08 2.41 2.65 2.83 3.05 3.25 2.5 1.69 1.96 2.15 2.30 2.47 2.63 2.6 1.37 1.59 1.74 1.86 2.00 2.14 2.7 1.11 1.29 1.41 1.51 1.63 1.73 2.8 .90 1.04 1.15 1.22 1.32 1.40 2.9 .73 .85 .93 .99 1.07 1.14 3.0 .59 .69 .75 .81 .87 .92 3.1 .48 .56 .61 .65 .70 .75 3.2 .39 .45 .50 .53 .57 .61 3.3 .32 .37 .40 .43 .46 .49 3.4 .26 .30 .33 .35 .38 .40 3.5 .21 .24 .26 .28 .30 .32 3.6 .17 .20 .21 .23 .25 .26 3.7 .14 .16 .17 .19 .20 .21 3.8 .11 .13 .14 .15 .16 .17 3.9 .09 .10 .11 .12 .13 .14 4.0 .07 .08 .09 .10 .11 .11 4.1 .06 .07 .08 .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 .02 .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