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Found Flood 9 times.

Displaying results 1 to 10.

1. Flood
* Water flowing over normally dry land. Excess water in a river causes a river to overflow its banks. * A high streamflow overtopping the natural or artificial banks in any reach of a stream. * Any flow that exceeds the bankfull capacity of a stream or channel and flows out on the floodplain; greater than bankfull discharge.

2. Flood level
The elevation of the water surface of a stream during a particular flood.

3. Flood plain (floodplain, flood-plain)
* Lowlands bordering a river which are subject to flooding. Flood plains are composed of sediments carried by rivers and deposited on land during flooding. * Level lowland bordering a stream onto which the stream spreads at flood stage. * Part of a river valley made of unconsolidated, river-borne sediment that is periodically flooded.

4. Flood stage
Stage at which banks overflow or damage begins or is threatened.

5. Flood waters
Stream waters which have escaped from a watercourse and run wild over lands outside the normal and overflow channels.

6. Flood wave
The sudden rise of water surface upon the approach of a flood crest, particularly if the celerity of the crest exceeds the mean velocity of the stream.

7. Flood, n-year
Flow of a stream equalled or exceeded, on the average once in n years.

8. Flooded
A condition in which the soil surface is temporarily covered with flowing water from any source, such as streams overflowing their banks, runoff from adjacent or surrounding slopes, inflow from high tides or any combination of sources.

9. Floodway
* The channel of a river or other watercouse and adjacent land areas that convey flood waters. * The channel of a river or other watercourse and the adjacent land areas that must be reserved in order to discharge the "base flood" without cumulatively increasing the water surface elevation more than one foot.

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