Figure 1-2: Surcharge
Figure 1-2. The illustration above shows a cross section of a stream with undulating land on either side. Water is shown at normal level, with lines drawn from bank to bank demarcating the one hundred year floodplain, the floodway, and the floodway fringe. Hypothetical development on the fringe area is illustrated to show the resulting water level at a higher elevation for the 100-year flood. This increase in water level elevation is called surcharge.

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