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 MT-1 1 ( NA ) STRIP NUMBER = 3 ( DT ) UNIT TIME OF UNIT-GRAPH(HOUR) = .10 ( XL ) BASIN-LENGTH(KM) = 1.10 (COFF) RUNOFF COEFFICIENT = .77 (BET ) INITIAL CONCENTRATION TIME = .00 ZONING LENGTH AREA(I) ACCUMU. WIDTH TIME NUMBER (KM) (SQ.KM) AREA(I) (KM) (HR) 1 .20 .080 .080 .400 .006 2 .50 .280 .360 .560 .025 3 .40 .120 .480 .300 .022 1 CONCENTRATED LENGTH AND AREA TIME LENGTH AREA (HOUR) (KM) (SQ.KM) .1 1.10 .480 C1 = .975 C2 = .025 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 .480 1.333 .667 .650 .000 .6498 .2 .000 .000 .667 .650 .016 .6663 .3 .000 .000 .000 .000 .017 .0169 .4 .000 .000 .000 .000 .000 .0004 .5 .000 .000 .000 .000 .000 .0000 .6 .000 .000 .000 .000 .000 .0000 .7 .000 .000 .000 .000 .000 .0000 .8 .000 .000 .000 .000 .000 .0000 .9 .000 .000 .000 .000 .000 .0000 1.0 .000 .000 .000 .000 .000 .0000 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 = .48SQ.KM BASIN LENGTH = 1.10KM TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .21 .25 .26 .28 .30 .31 .2 .95 1.14 1.18 1.27 1.36 1.40 .3 2.61 3.16 3.27 3.51 3.75 3.85 .4 5.20 6.29 6.52 6.99 7.46 7.67 .5 7.50 9.06 9.39 10.08 10.75 11.06 .6 7.96 9.62 9.98 10.71 11.42 11.75 .7 7.70 9.30 9.64 10.35 11.04 11.35 .8 7.57 9.15 9.49 10.18 10.86 11.17 .9 7.60 9.18 9.52 10.21 10.90 11.21 1.0 4.03 4.86 5.04 5.41 5.77 5.94 1.1 .10 .12 .13 .14 .15 .15 1.2 .00 .00 .00 .00 .00 .00 1.3 .00 .00 .00 .00 .00 .00 1.4 .00 .00 .00 .00 .00 .00 1.5 .00 .00 .00 .00 .00 .00 1.6 .00 .00 .00 .00 .00 .00 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 MT-2 1 ( NA ) STRIP NUMBER = 4 ( DT ) UNIT TIME OF UNIT-GRAPH(HOUR) = .10 ( XL ) BASIN-LENGTH(KM) = 1.97 (COFF) RUNOFF COEFFICIENT = .77 (BET ) INITIAL CONCENTRATION TIME = .00 ZONING LENGTH AREA(I) ACCUMU. WIDTH TIME NUMBER (KM) (SQ.KM) AREA(I) (KM) (HR) 1 .47 .150 .150 .319 .022 2 .50 .460 .610 .920 .025 3 .50 .400 1.010 .800 .029 4 .50 .100 1.110 .200 .038 1 CONCENTRATED LENGTH AND AREA TIME LENGTH AREA (HOUR) (KM) (SQ.KM) .1 1.78 1.072 .2 1.97 .038 C1 = .609 C2 = .391 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 1.072 2.979 1.489 .907 .000 .9070 .2 .038 .105 1.542 .939 .355 1.2936 .3 .000 .000 .053 .032 .506 .5377 .4 .000 .000 .000 .000 .210 .2102 .5 .000 .000 .000 .000 .082 .0822 .6 .000 .000 .000 .000 .032 .0321 .7 .000 .000 .000 .000 .013 .0126 .8 .000 .000 .000 .000 .005 .0049 .9 .000 .000 .000 .000 .002 .0019 1.0 .000 .000 .000 .000 .001 .0008 1.1 .000 .000 .000 .000 .000 .0003 1.2 .000 .000 .000 .000 .000 .0001 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 = 1.11SQ.KM BASIN LENGTH = 1.97KM TIME 5-YR 10-YR 20-YR 30-YR 50-YR 80-YR .1 .29 .35 .36 .39 .42 .43 .2 1.44 1.74 1.80 1.93 2.06 2.12 .3 4.22 5.10 5.29 5.67 6.05 6.22 .4 8.94 10.81 11.21 12.03 12.83 13.20 .5 14.03 16.95 17.58 18.86 20.12 20.69 .6 16.70 20.18 20.92 22.45 23.95 24.63 .7 17.37 20.99 21.77 23.36 24.92 25.63 .8 17.45 21.09 21.87 23.47 25.04 25.75 .9 17.52 21.17 21.95 23.56 25.13 25.85 1.0 12.56 15.18 15.74 16.89 18.02 18.54 1.1 5.10 6.16 6.39 6.86 7.32 7.53 1.2 1.99 2.41 2.50 2.68 2.86 2.94 1.3 .78 .94 .98 1.05 1.12 1.15 1.4 .30 .37 .38 .41 .44 .45 1.5 .12 .14 .15 .16 .17 .18 1.6 .05 .06 .06 .06 .07 .07 1.7 .02 .02 .02 .02 .03 .03 1.8 .01 .01 .01 .01 .01 .01 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