FLOOD06359

• Designation Number: 178
• County: Otero
• Community: Unincorporated Otero County
• Stream Name: Arkansas River, Timpas Creek
• Basin: Arkansas
• Title: Floodplain Information Report - Arkansas River, Timpas Creek, Otero County, Colorado
• Date: 8/1/1981
• Designation Date: 12/1/1981
• Floodplain - Doc Type: Floodplain Report/Masterplan

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historical precipitation and other valid data, but with an
average statistical one percent chance of being equalled or
exceeded during anyone year. The term is used interchangeably
with a one percent flood or Intermediate Regional Flood (See
definition for Intermediate Regional Flood.)

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Reference Point. A numbered
location for correlating the
throughout the report. Stream
points in this study.

point identifying a specific
data shown in various forms
stationing is used as reference

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Flood Crest. The m8lCimur.! stage or
waters of a flood at a given location.
Flood Frequency. (See Probability.)
interval at specific discharges or
flooding.

elevation

reached by

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Right Bank.
wster course,

The bank on the right side of
looking downstream.

a river,

stream or

Tho
water

average recurrence
stages which cause

Stream. Any
flows either
includine any
depression.
Watershed. The drainage area situated above a specified point on
a stream including the area drained by tributary streams which
enter the main stream above this point.

natural channel or depression through which water
continuously, intermittently or periodically,
artificial modification of the natural channel or

Flood Peak. The
given location.
flood crast.

maximum instantaneous discharge of a flood at a
It usually occurs at or near the time of the

Floodplain. An area in and adjacent to a stream, which area is
subject to flooding as the result of the occurrence of a lOO-year
flood "lid which aH,a thus is so adverse to past, current, ur
foreseeable construction or land use as to constitute a
significant hazard to public health and safety or to property.
Flood Profile. A graph showing the relationship of water surface
elevation to location, the latter generally expressed as distance
ahove mouth for a stream of water flmdng in an open channel. It
is generally drawn to show surface elevation for the crest of a
specific flood, but may he prepared for conditions at a given
time or stage.

Flood St8,11;e.
natural banks
..rea in which

The stage or elevation at
of a stream or body of water
the elevation is measurtld.

which overflow of the
begins in the reach or

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Intennediate Re 10na1 Flood. A typ" of nnon, incluilinr th..
water sur ace e evat on an territorial occupation thereof, which
can be e><pected to occur at flny time in a given area based upon
recorded historical precipitation and other valid data, but with
an average statistical one percent chance of being equalled or
exceeded during anyone year. The term is used interchangeably
with a one percent flood or one hundred year flood. (See
definition for lOa-year flood.)

Left Bank. The bank on the left .~ide of a river, stream or water
course as the observer lOOKS downstream.

Probability. The annual chance of occurrence of specific
hydrologic events, such as rainfall over a specified area or peak
di.~chllrge at !l speci He" lOCAtion ..xpress..cl in p",rc..nt, ...g., 51,
representing one chance in 20 of the event occurring in any year
or an average recurrence of onCe in twenty years.

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