Floodway

Floodway means the channel of the watercourse and those portions of the adjoining flood plains which are reasonably required to carry and discharge the regulatory flood. For this purpose the limit of the floodway shall be established by allowing not more than a one-foot rise of the water surface elevation of the regulatory flood as a result of encroachment. Wherever practical, equal conveyance reduction from each side of the flood plain shall be used. (See Figure 1.)

Source

18 CFR § 415.2

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Scoping language

For the purposes of this part, except as otherwise required by the context:

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