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<br />I 29 <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 />I Number (Feet) Identif . (Ft. MSL) (Ft. MSL) (cfs) (Ft. MSL) (cfs) (Ft. MSL) (cfs) (Ft. MSL) (cfs) <br />183 384+40 8228. 10 8230.31 470.00 8231.00 860.00 8231.43 1180.00 8232.68 2320.00 <br />I 184 389+70 8243.30 8245.39 470.00 8246."1 860.00 8247.27 1180.00 8248.64 2320.00 <br /> 8263.13 860.00 2320.00 <br /> 185 395+15 8259.80 8262.54 470.00 8264.52 1180.00 8267.14 <br />I 186 399+70 8275.90 8278.49 470.00 8279.74 860.00 8280.15 1180.00 8280.9f:l 2320.00 <br /> 186.9 400+05 State route 103 bridge 8277.00 8279.67 470.00 8280.85 860.00 8281.60 1180.00 8284.12 2320.00 <br />I at Peaceful Valley <br /> l87.l 400+30 8277.00 8280.82 470.00 8282.40 860.00 8283.27 1180.00 8286.36 2320.00 <br />I l87.2 401+10 8281.00 8283.05 470.00 8284.01 860.00 8284.53 1180.00 8286.92 2320.00 <br /> l88 403+60 8290.40 8293.04 470.00 8294.09 86 0.00 8294.74 1180.00 8296.48 2320.00 <br />I <br />l89 408+30 8312.90 8315. H 470.00 8316.18 860.00 8316.84 1180.00 8318.43 2320.00 <br />I 190 411+90 8329.70 8332.36 470.00 8333.46 860.00 8334.09 1180.00 8335.311 2320.00 <br /> 8332.90 8335.25 470.00 8336.31 860.00 1180.00 <br /> 190.7 412+30 8336.93 8339.00 2320.00 <br />I 190.8 412+45 8332.90 8336.03 470.00 8337.32 86 0.00 8338.16 1180.00 8340.89 2320.00 <br /> 190.9 413+25 8340.00 83111.83 470.00 8342.66 860.00 8343.14 1180.00 8344.64 2320.00 <br />I 191 414+55 8345.50 8347.15 410.00 83118.62 860.00 8349.25 1180.00 8350.84 2320.00 <br />I 191. 9 4l5+O5 8349.30 8351.53 470.00 8352.57 860.00 8353.21 1180.00 8354.91 2320.00 <br />192.l 415+20 83119.30 8352.49 470.00 8354.35 860.00 8356.22 1180.00 8358.25 2320.00 <br />I 192.2 415+90 8353.40 8354.70 470.00 8355.31 860.00 8356.24 1180.00 8358.26 2320.00 <br /> 193 4l9+85 8369.30 8371.55 410.00 8372.34 860.00 8372.69 1180.00 8373.81 2320.00 <br />I 194 424+20 8396.30 8398.26 410.00 8398.91 860.00 8399.51 1180.00 8400.99 2320.00 <br />I <br />I <br />I <br />