FLOOD01635

• Designation Number: 558
• County: Douglas
• Community: Douglas County Unincorporated
• Title: Flood Hazard Area Delineation - Plum Creek Watershed
• Date: 11/1/2001
• Designation Date: 1/2/2002
• Prepared By: UDFCD, WRC Engineering
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Table III-6: Douglas County Zone II-6 Hour Area Adjusted Rainfall Distribution
] 0- YEAR 50-YEAR 100- YEAR I
10-YEAR 50-YEAR 100-YEAR INCREMENTAL INCREMENTAL INCREMENTAL
INCREMENTAL INCREMENTAL INCREMENTAL RAINFALL RAINFALL RAINFALL I
RAINFALL RAINFALL RAINFALL TIME DEPTH DEPTH DEPTH
TIME DEPTH DEPTH DEPTH (minutes) (inches) (inches ) (inches)
(minutes) ( inches) (inches) (inches) 190 0.005 0.004 0.004 I
5 0.03 0.033 0.022 195 0.005 0.004 0.004
10 0.066 0.077 0.077 200 0.005 0.004 0.004
15 0.13 0.11 0.121 205 0.005 I
0.004 0.004
20 0.143 0.17 0.19
210 0.005 0.004 0.004
25 0.236 0.186 0.198
215 0.005 0.004 0.004 I
30 0.112 0.312 0.354
35 0.09 0.175 220 0.005 0.004 0.004
0.231
40 0.077 0.17 0.19 225 0.005 0.004 0.004
45 0.066 0.1 I 0.165 230 0.005 0.004 0.004 I
50 0.055 0.1 I 0.132 235 0.005 0.004 0.004
55 0.055 0.077 0.099 240 0.005 0.004 0.004 I
60 0.055 0.077 0.099 245 0.005 0.004 0.004
65 0.055 0.077 0.099 250 0.005 0.004 0.004
70 0.055 0.055 0.055 255 0.005 0.004 0.004 I
75 0.055 0.055 0.055 260 0.005 0.004 0.004
80 0.044 0.044 0.033 265 0.005 0.004 0.004 I
85 0.033 0.044 0.033 270 0.005 0.004 0.004
90 0.033 0.033 0.033 275 0.005 0.004 0.004
95 0.033 0.033 0.033 280 0.005 0.004 0.004 I
100 0.033 0.033 0.033 285 0.005 0.004 0.004
105 0.033 0.033 0.033 290 0.005 0.004 0.004
110 0.033 0.033 0.033 295 0.005 0.004 0.004 I
115 0.033 0.033 0.033 300 0.005 0.004 0.004
120 0.022 0.033 0.033 305 0.005 0.004 0.004 I
125 0.01 I 0.028 0.014 310 0.005 0.004 0.004
130 0.01 I 0.0]4 0.008 315
0.005 0.004 0.004
135 0.006 0.008 0.008 I
320 0.005 0.004 0.004
140 0.006 0.008 0.008
325 0.005 0.004 0.004
145 0.006 0.008 0.004
150 0.006 0.008 0.004 330 0.005 0.004 0.004 I
155 0.006 0.004 0.004 335 0.005 0.004 0.004
]60 0.006 0.004 0.004 340 0.005 0.004 0.004
165 0.006 0.004 0.004 345 0.005 0.004 0.004 I
170 0.006 0.004 0.004 350 0.005 0.004 0.004
175 0.006 0.004 0.004 355 0.005 0.004 0.004 I
180 0.006 0.004 0.004 360 0.005 0.004 0.004
185 0.005 0.004 0.004
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