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<br />Table 4 shows the resuits of the flood reconstitutions. Figures 6,7, and 8 show the historic <br />rainfall and runoff rates for the three storms. <br /> <br />Table 7-6 <br />lrondale Gulch Calibrated Infiitration Rates From Storm Reconstitutions <br /> <br /> Calibrated <br /> Peak 5 min. Observed Simuleted Minimum <br /> Total Storm Storm Previous Runoff Runoff Infiltration <br /> Volume (in.) Intensity Storm Volume (Ac- Volume (Ae- Rate <br />Storm (inlhr) Amounts It) It) (inlhr) <br />July 24, 1973 0.95 3.36 0.63" - 2 days 4.9 5.0 0.8' <br /> earlier <br />AU9. 7, 1973 1.95 5.64 0.35" - 8 days 10.7 10.8 0.8' <br /> earlier <br />July 30, 1974 1.39 3.94 1.33" - 8 days 7.9 8.1 1.31 <br /> earlier <br />lUsing uniform infiltration loss rate <br />2Using exponential loss rate based on UOFCD criteria <br /> <br />SANDm.CHT USGS STREAM GAGE 06714310 - IRONOALE GULCH - MONTE8ELLO <br />JULY 24, 1973 STARTING AT 1815 HOURS <br /> <br />'00 <br /> <br /> <br />~"fn1rotlon= <br />0.15 Inches/hour <br /> <br />0.05 <br />0.10 <br />0.15 <br />0.20 <br />0.25 <br />O.~Q <br />0.35 <br /> <br />200 <br /> <br />"' <br /> <br />.:'11-40 <br />U <br />05120 <br /> <br />~100 <br />g <br />-:i 00 <br />o <br />2i 00 <br /> <br /> <br />. <br />. <br />-" <br />u <br />~ <br /> <br />.. <br /> <br />Ob.erved <br />Runoff <br />Volume= <br />4.9 Ac-fI <br /> <br />Ob..rftd Hydrogroph <br />/.. . <br /> <br />~ <br />c <br />;; <br />'" <br /> <br />'" <br /> <br />. <br />o I020~~~HM~~1~"01H'~1-401~lHlrol~'~~ <br />Time In Minutes <br /> <br />Figure 7-2 <br /> <br />Colorado Flood <br />Hydrology Manual <br /> <br />DRAFT <br /> <br />7.28 <br />