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Avenue. However, the amount of flow spilling in these areas is expected to be minimal, and the <br /> velocities and depths of flow will likely be low. <br /> The flood wave will enter Saint Vrain Creek near the Martin Street Bridge and is expected to <br /> overtop every bridge crossing until it reaches I-25. The channel velocity in this reach generally <br /> ranges from 2 to 10 feet per second, and depths along the main flow line can exceed 11 feet. Based <br /> on the hydraulic modeling in this study the two main I-25 bridges and the frontage road bridge are <br /> not expected to overtop. <br /> As reported in the I-25 frontage road as-built plan set,the 100-year flood at this location is 17,290 <br /> cfs—significantly greater than the 3,900 cfs estimated at I-25 due to a clear-day breach of Highland <br /> No. 2 South Dam. For this reason, the inundation mapping extent was terminated at I-25. <br /> HIGHLAND NO.2 NORTH AND SOUTH DAMS - 8 - June 15,2012 <br /> INUNDATION MAPPING REPORT <br />