Flood Map Amendments

Making sure that flood maps are updated and accurate is an important element in planning for and taking preventative measures against flooding. The risks associated with floods typically increase as open land is developed because the creation of impervious surfaces (such as roads and rooftops) reduces infiltration of surface water and increases the velocity and volume of water flows.

Communities can work with the Federal Emergency Management Agency to update their flood maps to reflect additional development in their watersheds since the flood maps were last revised. With updated flood maps, communities can avoid siting development in floodplains and exacerbating the magnitude and impacts of flood events.