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<br />Table 2. Rainfall Depths in Inches for 60-Minute <br />Duration, F'ort Collins Area*. <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Table 3. <br /> <br />Boxelder Creek Rainfall Intensities <br />(Inches Per Hour). <br /> <br />End of Period <br />(minutes) 2 <br /> <br />Recurrence Interval in Years <br />10 25 50 100 <br /> <br />500 <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br /> Recurrence Interval In Years <br /> 2 10 25 50 100 500* <br /> ------ <br />Point Rainfall 0.920 1.62 1.99 2.31 2.63 3.16 <br />Cooper Slough 95% 0.874 1.54 1.89 2.19 2.50 3.00 <br />Area Reduction <br />Boxe1der Creek 76% 0.700 1.23 1.51 1. 76 2.00 2.40 <br />Area Reduction <br /> <br />5 0.336 0.590 0.725 0.845 0.960 1.152 <br />10 0.336 0.590 0.725 0.845 0.960 1.152 <br />15 0.420 0.738 0.906 1.056 1. 2 00 1. 440 <br />20 0.504 0.886 1. 0 87 1.267 1.440 1. 7 28 <br />25 0.756 1.328 1.631 1.901 2.160 2.592 <br />30 2.1t14 3.838 4.711 5.491 6.240 7.488 <br />35 1.260 2.214 2.718 3.168 3.600 4.320 <br />40 0.924 1.624 1.993 2.323 2.640 3.168 <br />45 0.504 0.886 1.087 1.267 1.440 1. 728 <br />50 0.420 0.738 0.906 1.056 1. 2 00 1.440 <br />55 0.420 0.738 0.906 1.056 1.200 1. 440 <br />60 0.336 0.590 0.725 0.B45 0.960 1.152 <br /> <br />*Larimer County Stor~Water Management Manual, Figure 3.3.1-1, <br />reference 11. <br /> <br />*Extrapo1ated assuming an Extreme Value probability distribution. <br /> <br />I <br />I <br />I <br />I <br />I <br /> <br />"If:' <br /> <br />I <br />I <br />I <br />I <br />I <br /> <br />17 <br />