Provo City’s West Side Levee Plan Study By PROVO CITY In 1983 and 1984, the United States Army Corps of Engineers (USACE) constructed improvements on what had previously been smaller levees along the lower Provo River and Utah Lake as an emergency measure to mitigate historic flooding along the Provo River and Utah Lake. Currently, those levees are shown providing 1%-annual-chance flood protection to approximately four square miles of Provo west of I-15, including the Provo Airport. The FEMA Flood Insurance Rate Maps (FIRMs) for the area are to be updated and will no longer show base flood protection by the levees due to a lack of required documentation for levee certification. FEMA’s action could add hundreds of existing residential, civic and commercial structures to the FEMA floodplain. The Provo Levee system consists of lakeside and riverside levees. The Lakeside Levee is five and a half miles in length and acts as a flood protection barrier to Utah Lake and Provo Bay waters. The Provo River Levee system follows along the north and south sides of the Provo River from I-15 to Lakeshore Drive and provides flood protection to residential areas adjacent to the river. Provo City and a team of CRS Engineers partnered to study the levees and to develop plan alternatives for Provo’s City Council to consider. Our report documented the existing conditions of the levees, presented alternatives for rehabilitating the levees for accreditation and created recommendations for moving forward with a preferred alternative. 44
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