FIM Library creation, Step 4, Computing depths of flood inundation
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Detailed Description
Figure 5. This diagram shows how flood depths are calculated along one of the cross-sections from the previous figure. The purple area is shows the cross-section of a normal stream (contained in its channel), and the light blue shows flood waters overtopping the channel banks and spreading out. The water depth (water-surface to ground) is calculated for each aerially-defined grid cell, illustrated here by the white lines.
Sources/Usage
Public Domain.