These elements will be found only on FBFM panels in the pre-1986 FIRM/FBFM map sets. They are not on the Pre-1986 FIRMs.

• Floodway Boundary Lines
• Cross Section Symbols
• Floodway Area Designation

The floodway is the channel of a river or other watercourse, plus any adjacent floodplain areas that are reserved, so that the 1-percent annual chance flood discharge can be conveyed without increasing the elevation of the 1-percent annual chance flood more than a designated height.