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Mr. Kevin Houck, Senior Engineer <br />Page Four <br />March 30, 2007 <br />~ Re ort Date 2001 IJSACE 1967 USACE A res 2007 A res 2007 <br />Period of Start Year 1SI21 1921 1921 1921 <br />Record End Year 1SI99 1965 2005 1965 <br /> <br />Exceedence <br />Prob. Recurrence <br />Int. r Discharge <br />cfs Discharge <br />cfs Discharge <br />cfs Discharge <br />cfs <br />0.002 500 98,500 285,000 99,600 135,400 <br />0.01 100 53,800 113,000 53,200 71,400 <br />0.02 50 40,100 74,000 39,200 52,600 <br />0.1 10 17,700 23,600 16,700 23,100 <br />1,000,000 <br />a~ <br />~ <br />d <br />rn <br />t 100,000 <br />~ <br />H <br />G <br />Y <br />l6 <br />d <br />a <br />10,000 <br />- O - USACE 1921-1999 <br />- • ~ • • USACE 1921-1965 <br />~Ayres 1921-2005 <br />~~Ayres 1921-1965 <br />10 100 100Q <br />Re.~currence Interval (years) <br />Figure 3. Comparis~m of Flow Frequency Results. <br />HOUCK3LDOC <br />(32-0987 04) <br />