Coastal and Floodplain Construction Inspector's Practice Exam

If a floodway analysis is required, it must demonstrate that the proposed work will not increase the design flood elevation by more than what amount?

1. 0.5'

2. 1'

3. 2'

4. 3'

The correct answer is: 1'

The requirement that any proposed work in a floodway must not increase the design flood elevation by more than 1 foot is rooted in federal regulations and floodplain management practices, specifically under the National Flood Insurance Program (NFIP). This standard helps ensure that development does not exacerbate flood risks to adjacent properties and the larger community. Floodways are designated areas that carry significant floodwaters, and any increase in flood elevation can lead to an increase in flood risk, potential damage to infrastructure, and jeopardization of public safety. By limiting the allowable increase to 1 foot, the regulation strikes a balance between development and maintaining flood risk management. This threshold is crucial because an increase beyond this amount could lead to more severe flooding in surrounding areas. Therefore, adhering to this standard minimizes negative impacts and fosters responsible development in flood-prone areas.