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IDF TABLE FOR ZONE TWO IN THE STATE OF COLORADO <br />Zone 2. San Juan, Upper Rio Grande, Upper Colorado, and Gunnison River Basins, and <br />Green River Basin below Confluence with the Yampa River <br />Project: Nuvemco Monogram S4ziq t4 S?-kMC1 - <br />Enter the elevation at the center of the watershed: Elev = 6,300 (input) <br />1. Rainfall Depth-Duration-Frequency Table <br />Fntar tha R-hni it and 24-hni fr rainfall rlenths from the NOAA Atlas 2 Volume 111 in riahtmost blue columns <br />Return Rainfall Depth in Inches at Time Duration <br />Period 5-min 10-min 15-min 30-min 1-hr 2-hr 3-hr 6-hr 24-hr <br />1 2 3 4 5 6 7 8 9 10 <br /> out ut output output output out ut output output input in ut <br />2- r 0.18 0.28 0.36 0.49 0.62 0.72 0.78 0.90 1.20 <br />5- r 0.24 0.38 0.48 0.67 0.84 0.97 1.05 1.20 1.60 <br />10- r 0.29 0.44 0.56 0.78 0.99 1.11 1.19 1.35 1.95 <br />25- r 0.34 0.53 0.67 0.92 1.17 1.32 1.41 1.60 2.40 <br />50- r 0.39 0.60 0.76 1.06 1.34 1.50 1.60 1.80 2.75 <br />100- r 0.44 0.68 0.86 1.19 1.50 1.67 1.78 2.00 3.00 <br />Note: Refer to NOAA Atlas 2 Volume III isopluvial maps for 6-hr and 24-hr rainfall depths. <br />9 o7 ;i fin Infnncih?_flnr?finn_t=rnnnonev Ttahln <br />Return Rainfall Intensi in Inches Per Hour at Time Duration <br />Period 5-min 10-min 15-min 30-min 1-hr 2-hr 3-hr 6-hr 24-hr <br />1 C2) (3) 4 5 6 7 8 9 10 <br /> out ut out ut output out ut out ut out ut output output out ut <br />2- r 2.17 1.69 1.42 0.99 0.62 0.36 0.26 0.15 0.05 <br />5- r 2.94 2.28 1.92 1.33 0.84 0.48 0.35 0.20 0.07 <br />10- r 3.44 2.67 2.25 1.56 0.99 0.56 0.40 0.23 0.08 <br />25- r 4.07 3.16 2.67 1.85 1.17 0.66 0.47 0.27 0.10 <br />50- r 4.66 3.62 3.05 2.12 1.34 0.75 0.53 0.30 0.11 <br />100- r 5.22 4.05 3.42 2.37 1.50 0.84 0.59 0.33 0.13 <br />UD-RainZone v1.01a, Z-2 4/16/2009, 3:12 PM