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<br />I 24 <br />I TABLE 6 <br /> FLOOD FREQUENCY - ELEVATION AND DISCHARGE DATA <br />I MIDDLE ST. VRAIN CREEK, BOULDER COUNTY, COLORADO <br />I lO~Year Flood 50-Year Flood 100-Year Flood 500-Year Flood <br />Ref. Station Stream Bed Crest Peak Crest Peak Crest Peak Crest Peak <br />Point Fr. Mouth Elevation Elevation Discharge Elevation Discharge Elevation Discharge Elevation Discharge <br /> Number (Feet) Identif . (Ft. MSL) (Ft. MSL) (cfs) (Ft. MSL) (cfs) (Ft. MSL) (cfs) (Ft. MSL) (cfs) <br />I 146 219-Hi5 1636.20 7637.95 510.00 7638.89 1060.00 1639.46 1460.00 7641.30 2900.00 <br />I l47 225-1'85 76')2.80 7655.0& 510.00 7656.18 1060.00 7656.65 1460.00 7657.79 2900.00 <br />l47.l 226+30 7654.40 7656.87 510.00 7657.19 1060.00 7658.25 1460.00 7659.41 2900.00 <br />I 147.2 226+40 7654.40 7657.23 510.00 7659.14 1060.00 7659.63 1460.00 76M.8& 2900.00 <br /> 147.3 226+70 765').00 7658.04 510.00 1659.01 1060.00 7659.43 1460.00 7660.BO 2900.00 <br />I 147.4 227+00 7655.60 1658.31 510.00 7660.64 1060.00 7660.51 1460.00 7661.35 2900.00 <br />I 147.5 227+15 76S5.60 7659.39 510.00 7660.56 1060.00 7660.511 1460.00 7662.59 2900.00 <br />l47.6 227+85 76S8.39 1660.75 ') 1 O. 00 7662.01 1060.00 7662.69 1460.00 7664.26 2900.00 <br />I 148 23~20 1668.40 7670.64 510.00 7671.70 1060.00 7672.311 1460.00 7673.71 2900.00 <br /> l49 233+50 7678.90 1681.11 510.00 1682.21 1060.00 7682.90 1460.00 7684.31 2900.00 <br />I 149.9 234+45 State route l03 7681.60 7684.1') 510.00 1665.13 1060.00 7686.66 1460.00 1687.00 2900.00 <br /> bridge at Raymond <br />I 150.l 235+05 7681.60 1685.80 510.00 7688.39 1060.00 7688.42 1460.00 7691.78 2900.00 <br /> 150.2 235-1'65 7684.20 7686.39 51 O. 00 7689.70 1060.00 7690.28 1460.00 7691.74 2900.00 <br />I 151 237-1-20 7687.50 7690.08 510.00 7691.18 1060.00 7691.87 1460.00 76<D.71 2900.00 <br />I 151.1 238+05 7689.30 76'l1.84 510.00 7692.98 1 C60. 00 7694.30 1460.00 7695.6ll 2900.00 <br />l51. 2 238+15 7689.]0 7692.13 510.00 1694.44 1060.00 7695.71 1460.00 7697.48 2900.00 <br />I l51. 3 238-1-90 7692.70 7694.98 510.00 7696.31 1060. no 7697.21 1460.00 7698.98 2900.00 <br /> l51.4 239.fS5 76'l6.60 76'l8.'l9 510.00 7700.08 1060.00 7100.87 1460.00 7702.80 2900.00 <br />I l51. 5 239+95 76%.60 7100.35 510.00 7701.64 1060.00 7702.23 1460.00 770].59 2YOO.00 <br />I <br />I <br />I <br />