FLOOD08839

• County: El Paso
• Community: Colorado Springs, Manitou Springs
• Stream Name: Fountain Creek
• Basin: Arkansas
• Title: Floodplain Information Report
• Date: 8/1/1974
• Prepared For: Pikes Peak Area Council of Governments
• Prepared By: US Army Corps of Engineers
• Contract/PO #: &&
• Floodplain - Doc Type: Floodplain Report/Masterplan

GLOSSARY OF TERP.S

Flood Stage. The stage Or elevation at...hich over !low of tr:enatur"l
baoks of a stfea~ or body of w~t~r bP.~in~ in the reach or area in
whichtheelev"Uonism",asured.

Flood. An overflow of lands ~ot normally ~ov~red by water, that are
used or usable by ma~.. Flooes have t...o esse~tia1 characteristics:
the inundation of land is temporary; and the land is adjacent to and
inundated by overflow from a river or stream, or an ocean, lake, or
otherboCyofstandingwater.
UOr",ally, a "flood" is conddered as "ny t~rr,po:r"-ry :ris",
in $trcanf1ow or stage, but not the ponding of su~face wat~r, tr:at
results in significant adverse effects in the vicinity. Adverse
effects may include damages from overflow Of land areas, temporary
backwater effects in sewers and local d~ainage channels, cre~tion
of unsanitary conditions or other unfavorable situations by deposi-
tion of materials in str~a~ chann~ls during flood recessions, rise
of ~ro~nd water coincident with incr~ascd streamflow, and other

flood..'ay. The minirnu", are" of th, flood plain tb,l.t i.~ r~<rJ;r~d tel
celnveya flood peal< of a selected ",agr.~tude. This ~sClany consists
of th~ most hazardou~ "rea of th~ flO<)d 1'lai:1 whH~ water v~loci-
tiesaresigr.ificant. i\reasonthelandwardsideofafloodway
normally conv~y iittle flood flow, although they are inu~atBd during
floods.

Inter~ediate Regional flood. A flood having an average frequency
of occurrence in the order of once in 100 years although the flood
may occur in any year. It is based on statistical analyses of
rainfall and runoff characteristics in the general region of the
...atersh<>d.

prOblems.

Low Steel or Dnderclearance. The lowest point of a bridge or otter
structure over or across a river, st~eam, or watercour5~ that limits
the opening through which water flows.

Flood Cr~st. The maxirn~m stage or elevation reaChed by the waters
of a flood at a given location.

Flood "eak. The ma><im"", in~tantaneous disc;harge of a flood at a
giv!>nlocation. Itus\ldllyocc\.:rs!l.tor"",artheti..eofthe

flood crest.

Standard Project Flood. The flood tr~t may be exp~ct~d from the
most severe combination o~ meteorologica: and hyd~ological cond;-
tion3 t~a~ i~ consid~re~ reasonably characteristic oE the q~og~apt~
ical area in which tr.e drain"'],, baain is loc<lte<l, p"c1udinq
e><tremell' rare combinations. r~"-k.discharges for these flood. arc
generally "bout 40\ to 60\ of the probable ma><imurn floods for the
same basins. Such floods, as used by t~e Corps of Engineers, are
intended as practicable expressions of th~ deqree of protection
that sho~ld be sought in the design of flood control works, t~c

Flood l'lair.. Th.. relatively flat area or lowlands adjoining th",
channel of a river, stream or wat~rcourse, or ocean, lake, or

other body of standing water, which has been or may be covered by
floodwilter.

Flood Frofi1e. A graph showinq the relationship of w"t",r surface
elevation to location, th" latter generally ~><pressed as distance
above mouth fora stream of water flowir.g in an open channel. It
is generally drawn to show surface elevation for the crest of a
specific flood, hut may be prepared for conditions at a given time

failure of which might be disastrous.

or stage.

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