FIM library creation, Step 3, Delineating the extent of flood inundati
Detailed Description
Figure 4. The hydraulic model takes each individual water-surface elevation (in this example, the 20-foot stream stage elevation from the previous figure), and overlays them onto a ground-surface elevation model (the brown, gridded base layer) to determine how far flooding would extend (the blue areas). The white lines represent the model’s perpendicular cross-sections.
Sources/Usage
Public Domain.
Related
Flood Inundation Mapping Science
When planning for a flood, there are three key questions that must be answered: What areas will be flooded? How deep will the flood waters get? When will the flood arrive? Historical flooding can help a community anticipate how much impact similar flood events could have, but there are other methods and tools that can provide more accurate and nuanced estimations of a wide variety of flood...
Related
Flood Inundation Mapping Science
When planning for a flood, there are three key questions that must be answered: What areas will be flooded? How deep will the flood waters get? When will the flood arrive? Historical flooding can help a community anticipate how much impact similar flood events could have, but there are other methods and tools that can provide more accurate and nuanced estimations of a wide variety of flood...