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" JO floodplai ~ 1 Imi ts Can be est<lbl i 'ned by l<ly;~g out the measured distances inth"ficld. A<; e~p'a jn~d i" the paragraphs descrl bing the "Flooded Areas" there are portions of the floodplain in the lower reaches that are sul>je't to .h~ 110w flood i ng tau sed by ~ps t ream cond i t j on ';. Thu~. flood i n~ in these "rea5cannotbeverifiedbytraditionalmethod,describedat>ove. These special areas'.-Ieredellneated in the field frQmspe"ial studies, GLOSSARY easin mea~s an enclosed or partly enclo,ed water areA or depression on the surface of the e~rth. Oesignated floodplain means the area designated as a floodplain by official action of the I board of coun ty conn!"~ i oners) (<:I ty CQunc i I) wi th the pr i or con- c~rrenCe of the Colorado ~ater Conservation Board, , , Flood means a temporary rise in the water level of stream or basin that resul~ inundation of overflow of area, not u,ually covered by water. ~_ year flood means a flood with a peak flow magnitude that has a one percent chance of being equalled or exceeded in any given year and a frequency of oc- curence of about one in 100 years on the long-term average, FloO<Jfrequencymeans the average frequency, statistically determined, for which a specific flood flow magnitude may be equalled or exceeded. (Frequency, expressed as an occurrence within a specified number of years, is the equivalent of recurrence interval which is the average time interval between actual occur- renees of a flood event of a given or greater magnitude of flow), Flood profiie mean, a graph or a plotting of water surface elevations of a speCific flood frequency of a stream or basin. flood protection level mean. a level which is established above the 100-year flood elevation for regulating uSes in high halardareas, floodplain (general definition) means an area along and adjacent to a stream orbasln..hich is,uLject loflooJing. FlOOdplain (regulatorydefinltlon) means an area in and adjacent toastream . which area is subject to flooding as the resul t of the occurrence of an inter- mediate regional flood and which area thu. Is sO adverse to past, current, or toreseeable construction or land use as to constitute a signIficant hazard to public health and safety or to property. Intermediate regional flood means a type of flood, including the water sur- face elevation and territorial occupation thereof, which can be expected to occur at any tlm.: in a ~i\tell Mea tJd>CU u>><-,n ",,;orded historicai predpita,ion and otnH valid data, but with an average statistical one percent chance of being equalled 0' exceeded during <lny one year. The term Is used interChangeably with a one percent flood or IOO-ye.,r flood. Low hazard zone ,",'ans that area of the designated floodplain in whiCh the waters of an Interl"ediate reqioMl1 (IOO-year) flood will not "nnin a maxim"", depth greater than one and o",,-half feet.