Cross sections are shown on which type of map?

Cross sections are typically shown on a new format Flood Insurance Rate Map (FIRM). These maps are essential in floodplain management as they provide detailed information about flood hazard areas. The inclusion of cross sections on FIRMs allows for a better understanding of the topography and hydrology of a particular area, which is critical for determining flood elevations and risks.

In the context of floodplain management and the National Flood Insurance Program (NFIP), cross sections are important for illustrating how land features can affect flood behavior. They help depict how water flow changes across different terrains, thus assisting in identifying areas at risk for flooding and informing regulatory decisions regarding development in flood-prone areas.

Although floodway maps, topographic maps, and velocity maps serve specific purposes within flood management and planning, they do not typically present cross sections as part of their standard features. Instead, those maps focus on different aspects such as floodway boundaries, elevation changes over the terrain, or areas with varying flood velocities.