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Table 1. Summary of Discharges Flooding Source and Location Big .Thompson Eiver At 'County Road 9B At Mouth of ~anyon (Drake Gage) At Drake Below North FOrk At Drake Above North POrk At Lake Estes Below Dry Gulch At Crags Drive in Estes Park Big Thompson River Tributary 1 At Mouth .... ... Big Thompson River Tributary 2 At Mouth Big Thompson River Tributary 3 At Mouth Big Thompson River Tributary 4 At Mouth Buckhorn Creek At Mouth At Masonville Below Redstone Creek At Masonville Above Redstone Creek Cedar Creek At Mouth Dark Gulch At Mouth Dickson Gulch At Mouth Drainage Area (Square Miles) 515.00 304.00 274.00 191.00 156.00 81.00 0.31 1.63 1.51 0.25 142.90 122.50 92.00 19.15 1.10 2.10 10-Yeu 4,100 4,250 3,100 2,150 2,250 9BO 260 150 120 200 6,844 6,321 4,674 2,460 560 970 Peak Discharges (cfs) 50-Year 100-Year 500-Year 12,300 11 , 500 1,850 5,100 3,800 1,340 390 1,250 1,200 340 15,090 13,593 10,321 6,530 950 1,600 19,000 16,900 10,400 1,500 4,100 1,460 510 1,650 1,550 500 20,244 18,059 13,862 9,400 1,250 1,900 44 , 000 38,900 19 , 200 13 , 600 1,200 1,160 900 2,400 2,300 800 36,000 32,000 24,000 20,000 1,850 2,650