FLOOD00068

• County: El Paso
• Community: Fountain
• Stream Name: Fountain Creek
• Title: Fountain Creek Watersehd Supplemental Hydrology, 6-hr Storm Modleing and Confidence Intervals
• Date: 3/21/2006
• Prepared For: Pikes Peak Area Council of Governments
• Prepared By: URS
• Floodplain - Doc Type: Educational/Technical/Reference Information

100,yr Storm

From
NOAA
Atlas

l-hr =
2-hr =
3-hr =
6-hr =
24-hr =

2.64 ~
3 -
3.2 -
3,6 -
4.6 w

Type lIa 24-hour Storm Development
Time Time 24-hr Storm
(min) Shift Percent Cumulative Rainfall Cumulative
{mini '%1 Percent t%\ lin' lin'
0 0,0000 0,0000 0,000 0,000
15 0,0005 0.0005 0,002 0,002
30 00010 0.0015 0,005 0,007
45 0,0015 00030 0.007 0.014
60 0.0015 0,0045 0,007 0,021
75 0.0015 0.0060 0.007 0028
90 00020 0.0080 0009 0.037
105 0,0020 0.0100 0009 0,046
120 0,0020 0.0120 0.009 0,055
135 0,0023 0.0143 0.011 0,066
150 0,0022 0.0165 0.010 0.076
165 0,0023 0.0188 0.011 0086
180 0,0022 0,0210 0.010 0.097
195 00023 0,0233 0.011 0.107
210 0.0022 0.0255 0.010 0.117
225 0.0023 0.0278 0.011 0.128
240 0.0042 0,0320 0.019 0.147
255 0.0070 00390 0,032 0.179
270 0,0070 0.0460 0,032 0.212
285 00070 0,0530 0032 0.244
300 0.0070 0.0600 0032 0.276
315 0 0.0150 0.0750 0,069 0.345
330 15 0,0250 0.1000 0.115 0.460
345 30 03000 0.4000 1.380 '.840
360 45 03000 0.7000 1.380 3.220
375 60 00250 0.7250 0.115 3,335
390 75 0,0250 0,7500 0.115 3.450
405 90 0.0150 0.7650 0069 3-519
420 105 0.0150 0.7800 0069 3588
435 120 0.0100 0.7900 0.046 3.634
450 135 0_0100 0.8000 0.046 3.680
465 150 0.0100 0.8100 0.046 3.726
480 165 0.0100 08200 0,046 3.772
495 180 0,0050 08250 0,023 3.795
510 195 0,0050 0,8300 0.023 3.818
525 210 0.0050 08350 0.023 3.841
540 225 00050 0,8400 0023 3864
555 240 00050 0,8450 0,023 3.887
570 255 00050 0.8500 0023 3.910