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<br />I <br />, <br /> <br />historical precipitation and other valid data, but with an <br />average statistical one percent chance of being equalled or <br />exceeded during anyone year. The term is used interchangeably <br />with a one percent flood or Intermediate Regional Flood (See <br />definition for Intermediate Regional Flood.) <br /> <br />I <br />i <br />I <br />I <br />, <br />i <br /> <br />Reference Point. A numbered <br />location for correlating the <br />throughout the report. Stream <br />points in this study. <br /> <br />point identifying a specific <br />data shown in various forms <br />stationing is used as reference <br /> <br />, <br />, <br />, <br />, <br /> <br />Flood Crest. The m8lCimur.! stage or <br />waters of a flood at a given location. <br />Flood Frequency. (See Probability.) <br />interval at specific discharges or <br />flooding. <br /> <br />elevation <br /> <br />reached by <br /> <br />", <br /> <br />Right Bank. <br />wster course, <br /> <br />The bank on the right side of <br />looking downstream. <br /> <br />a river, <br /> <br />stream or <br /> <br />Tho <br />wate>:, <br /> <br />average recurrence <br />stages which cause <br /> <br />Stream. Any <br />flows either <br />includine any <br />depression. <br />Watershed. The drainage area situated above a specified point on <br />a stream including the area drained by tributary streams which <br />enter the main stream above this point. <br /> <br />natural channel or depression through which water <br />continuously, intermittently or periodically, <br />artificial modification of the natural channel or <br /> <br />Flood Peak. The <br />given location. <br />flood crest. <br /> <br />maximum instantaneous discharge of a flood at a <br />It usually occurs at or near the time of the <br /> <br />Floodplain. An area in and adjacent to a stream, which area is <br />subject to flooding as the result of the occurrence of a 100-year <br />flood "lid which area thus is so adverse to past, current, ",r <br />foreseeable construction or land use as to constitute a <br />significant hazard to public health and ssfety or to property. <br />Flood Profile. A graph showing the relationship of water surface <br />elevation to location, the latter generally expressed as distance <br />above mouth for a stream of water flmdng in an open channel. It <br />is generally drawn to show surface elevation for the crest of a <br />specific flood, but may be prepared for conditions at Il. given <br />time or stage. <br /> <br />Flood Sta,l1;e. <br />natural banks <br /><lrea in which <br /> <br />The stage or elevation at <br />of a stream or body of water <br />the elevation is measurt!d. <br /> <br />which overflow of the <br />begins in the reach or <br /> <br />, <br />I <br />, <br />I <br />I <br />, <br />, <br /> <br />Intennediate Re ional Flood. A eyr" of noon, incluilinr th.. <br />water sur ace e evat on an territorial occupation thereof, which <br />can be e><peeted to occur at ilny time in a given area bilsed upon <br />recorded historical precipiration and other valid data, but with <br />an average statistical one percent chilnce of being equalled or <br />exceeded during anyone year. The term is used interchangeably <br />with a one percent flood or one hundred year flood. (See <br />definition for 100-year flood.) <br /> <br />Left Bank. The bank on the left .~ide of a river, stream or water <br />course as the observer looks downstream. <br /> <br />Probability. The annual chance of occurrence of specific <br />hydrologic events, such as rainfall over a specified area or peak <br />di.~chllrge at a speei He" lOCAtion ..xpress..cl in p",rc..nt, ...g., 51, <br />representing one chance in 20 of the event occurring in any year <br />or an average recurrence of once in twcnty years. <br /> <br />-22- <br /> <br />-21. <br />