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<br />Table 1. Summary of Discharges (Cant'd) <br /> <br />- <br />w <br /> <br /> Drainage Area Peak Discharges (cubic feet per second) <br />Floadin2 Source and Location ( Souare Miles) 10-Year 50-Year 100-Year 500-Year <br />Tri-Area Drainageway <br />At Firestone 3.6 540 1,720 1,910 2,550 <br />At Frederick 1.7 440 1,600 1,810 2,190 <br />At Dacona 1.4 310 580 740 1,180 <br />Big Thompson River <br />Larimer-Weld County Line 595 3,600 7,600 10,000 18,500 <br />Upstream from Little Thompson River 613 2,200 4,700 6,500 12,000 <br />Downstream from Little Thompson River 813 3,200 7,300 9,900 20,000 <br />Confluence with South Platte River B19 2,500 5,900 8,000 15,000 <br />Coal Creek <br />Near Tri-County Airport 68.61 5,970 9,670 11,850 17 , 860 <br />At Briggs Street 77.48 6,160 10,040 12,280 18,380 <br />The Slough 275 1,350 2,150 4,800 <br />lData not available <br />