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<br />J <br /> 20 <br />I TABLE 6 <br /> FLOOD FREQUENCY - ELEVATION AND DISCHARGE DATA <br />I MIDDLE ST. VRAIN CREEK, BOULDER COUNTY, COLORADO <br />I IO-Year Flood 50-Year Flood IOO-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 />l Number (Feet) Identif . (Ft. MSL) (Ft. MSL) (cfs) (Ft. MSL) (cfs) (Ft. MSL) (cfs) (Ft. MSL) (cfs) <br />lO4 62+55 7/71.00 772L2'i 59().OO 7224.61 1430.00 7225.3tl 2000.00 7227.52 40n.00 <br /> , <br />) 105 67+85 77H.30 7235.74 SQO.OO 7237.48 1430.00 7238.50 2000.00 72U1.18 4C70.00 <br /> 106 73+95 7747.80 72 50. 7 B SSO.OO 7252.52 1240.00 72=3.25 1730.00 7254.<)3 3480.00 <br /> 107 77+95 72,)B.RO 7260.71 5 SO. 00 7261.34 1240.00 7261.76 1730.00 7262.87 3480.00 <br /> 108 83+25 7272. 20 7274.66 5S().00 7276.03 1240.00 7276.66 1730.00 7278.34 3480.00 <br />} 109 88+35 7284.70 7287.49 550.00 7289.08 1240.00 7289.75 1730.00 7291.48 3480.00 <br />t 109.9 88+65 Forest Service Bridge 7211S.30 7288.26 550.00 7289. 59 1240.00 7290.52 1730.00 7294.19 3480.00 <br /> 728S.30 72118.79 5'10.00 7290.68 1240.00 7291.61 1730.00 <br /> 110.1 88+80 7294.23 3480.00 <br />} 110.2 89+25 72f1S.89 728Q.28 5<;0.00 7291.37 1240.00 7292.95 1730.00 7294.33 3480.00 <br /> III 94+30 7299.10 7301.55 5S0.00 7303.09 1240.00 7303.95 17 30.00 7306.86 3480.00 <br />0 112 104+10 7323. 40 7326.61 550.00 7328.28 1240.00 7328.95 1730.00 7330.23 3480.00 <br />} 112.9 l04+35 7324.40 73 27.7 2 550.00 7329.46 1240.00 7330.29 1730.00 7331.26 3480.00 <br />113.1 104+50 7324.40 7328.86 550.00 7330.74 1240.00 732<J.20 17 30.00 7335.29 3480.00 <br />} 113.2 104+85 7325.40 7329.25 5 '10.00 7331.75 1240.00 7334.30 17 30.00 7335.29 3480.00 <br /> 114 108+60 7336.80 7339.40 5<;0.00 73Ql.04 1240.00 7342.12 1730.00 7 3 Q3. 7 0 3480.00 <br />\ 114.9 l09+05 7337.70 7340.49 550.00 7342.32 1240.00 7343.00 1730.00 7344.64 3480.00 <br /> 115.l l09+15 73n.70 7341.36 550.00 7342.92 1240.00 73Q2.96 1730.00 7346.49 3480.00 <br />\ <br />J 115.2 109+70 7339.20 7342.05 550.00 7343.79 1240.00 7345.18 173 0.00 7346.40 3480.00 <br />\ 116 112+20 7)116.20 7348.60 550.00 7349.40 1240.00 7349.73 1730.00 7350.73 3480.00 <br />, <br />I <br /> 7356.60 7358.45 5<;0.00 7359.45 1240.00 1.35Q.97 1730.00 7361.39 3480.00 <br /> 117 116+70 <br />~ <br />} <br />} <br />