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 Recommendations for construction in flood zones often include elevating <br />structures and using permeable surfaces to minimize adverse effects on <br />neighboring properties. <br />o Explained how to assess potential impacts on adjacent properties: <br /> Assessing potential impacts on adjacent properties involves: <br /> Consider the existing topography and how proposed changes may redirect <br />floodwaters, potentially increasing velocity and volume on neighboring <br />properties. <br /> Evaluate the proximity of the project site to flood zones, including <br />velocity zones and moderate wave action areas, to understand the potential <br />for moving floodwater impacts. <br /> Analyze the proposed design elements, such as solid foundations or <br />impervious surfaces, that could obstruct natural water flow and exacerbate <br />flooding risks for adjacent areas. <br />o Provided recommendations for minimizing flood impacts, such as elevating <br />structures. <br />o Discussed the use of fill in floodplain areas and its potential impacts: <br /> The use of fill in floodplain areas can lead to increased flood risk for <br />adjacent properties by redirecting floodwaters. <br /> Filling in floodplain areas may disrupt natural drainage patterns, causing <br />water to accumulate and potentially leading to flooding in low-lying areas. <br /> Regulatory guidelines often require careful analysis of topography and <br />hydrology to assess the impacts of fill on floodplain functions and <br />neighboring properties. <br />o Resources and Data Sources: <br /> Discussed the availability of training materials on flood zones and coastal <br />processes. <br /> Explained the limitations of certain data sources and models: <br />o FEMA flood maps may not reflect the most current or detailed data <br />available, leading to potential inaccuracies in floodplain delineation. <br />o The Massachusetts Coastal Flood Risk Model (MCFRM) does not account <br />for coastal erosion or recipitation, limiting its applicability for <br />comprehensive flood risk assessment. <br />o Data layers from different sources may have varying levels of uncertainty, <br />necessitating careful consideration when establishing coastal resiliency <br />zones. <br /> Highlighted the importance of using the most conservative data when assessing <br />flood risk: <br />o Helps to ensure safety in flood-prone areas. <br />o Minimizes the risk of underestimating potential flood impacts on <br />properties and infrastructure. <br />o Accounts for uncertainties in projections, providing a buffer against <br />unexpected severe weather events. <br /> Discussed the need for more guidance on flow path analysis for single-family <br />properties. <br />o Advanced Topics and Future Developments: <br />3 <br /> <br /> <br />