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<br />500 y~o' Flood
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<br />GLOSSARY OF TE~
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<br />Flood. .An overflov of lands not nc~ally coverod by wator, that
<br />..no ""ed Dr u"e..bl~ by m..n. Fl,>ods have two essential cn"r"ctor~
<br />isties, the inundation of land is temporary; and the land is ad~
<br />iaeent to and lnund,-ited hy overflo,,' from" rive, or ~~,roa.m or an
<br />ocean, lake, or ether body of standing water.
<br />Normally, a "flood" i" oon~idered as any temporary rise in
<br />streamflow or stage, but not the panding of 5urface water, that ro.
<br />suIts in siqniEicant "d',.~r3e effects in the vicinity. Adverse ef-
<br />fects may include damages frorn overflow of land areas, temporary
<br />backwater effects in sewer~ and local drainaqe Channels, creation
<br />of uJl~dl':litary ~-onditioJl~ ur other un!avo...ble situation~ by dq>osi-
<br />tion of materials in stream cha'~elB during flood recessions, rise
<br />of ground water coincid~nt witb increased stre~mflow, ~nd other
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<br />HOLBROOK
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<br />FLOODED AREA
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<br />LEGEND f':::J Illll.. A..... Mou'~
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<br />'500 V'O' flOod ,
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<br />Flood Plain. The rolativ~ly fLat arc" or Lowlands adjoining th~
<br />ch~nnel or a river, stream or watercourse, or ocean. L~ke, or other
<br />body of standing water, which has been c~' may be covered by flood-
<br />~."ter.
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<br />Flood Crest. The maxim~ s~ge or eLev~tion reached by the waters
<br />of d flood at a given location.
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<br />fLood Peak. Th~ maximum instantan~ous dischargo of a flood at a
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<br />given location.
<br />crest.
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<br />It usually occurs at or near the time of the fLood
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<br />10.4
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<br />10.3
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<br />10.2
<br />RIVtR MILES
<br />FLOOD
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<br />10.1
<br />A BOl'f MOUfH
<br />PROFilE
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<br />10.0
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<br /> /~QO"", ~Iood ~!
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<br />Flood Profil~. A qraph showing the rel~tionsnip of water surface
<br />dov"tion t., lo~ativr;, th~ l"tter g.,nerally expres""J ,,,, J..i"t.."~,,
<br />"oov<' ",outh for" stream of '"".,tcr flowing in an open ch,,,,nel. It
<br />i" generally rlrawn to ~h"w surf"c," elev"tior\ for the crest of a
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<br />CROSS SECTION .30
<br />VIEW LOOKING tlOW..5TRtA".
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