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<br /> Table 2. Summary of Discharges <br /> Flooding Source Drainage Area Peak Discharges (Cubic Feet per Second) <br /> and Location ( SQuare Miles) 10-Year 50-Year 100-Year 500-Year <br /> Airport Creek <br /> At Confluence With Big Dry Creek 2.51 550 1,300 1,640 3,040 <br /> At Confluence With Tributary 1 1.22 370 760 920 1,540 <br /> At Upstream Limit of Detailed Study 0.43 390 690 810 1,220 <br /> North Branch Airport Creek <br /> At Confluence With Airport Creek 0.30 100 230 280 510 <br /> At Upstream Limit of Detailed Study 0.03 30 50 60 90 <br /> Rock Creek <br /> Confluence With Coal Creek __1 5,120 8,740 10,640 15,920 <br /> At Dillon Road __1 2,820 5,240 6,500 9,840 <br /> At Denver-Boulder Turnpike __1 3,630 5,820 6,810 9,350 <br />.... Big Dry Creek <br />.... <br /> At West l20th Avenue 41.2 4,900 8,700 10,200 12,000 <br /> Cay Reservoir Channel <br /> At Confluence With Big Dry Creek 2.60 915 1,525 1,820 2,650 <br /> Cay Reservoir Channel North Tributary <br /> Above Confluence With City __1 <br /> Park Channel 225 370 440 640 <br /> City Park Channel <br /> Upstream of Cross Section A 5.68 710 1,300 1,550 2,250 <br /> City Park Channel South Tributary <br /> Above Confluence With City <br /> Park Channel __1 360 650 800 1,200 <br /> Nissen Reservoir Channel <br /> At Confluence WithBig Cry Creek 2.67 1,860 3,150 3,400 5,600 <br />