Laserfiche WebLink
<br />ahove"",,utl': tor a stream of water flowing i". an open channel. rti5 <br />generally drawn to show 5urface elevation for the crest of a speifie <br />flood, but nay be prepared for conditions at a given time Or stage. <br />flood Stage. The 5tage or elevation ~t which overflow of the naturaL <br />ba"~s of ~ stream or body of water begi05 in the reach or area in <br />which the elevation i5 measured. <br /> <br />Interrnediate Regional Flood. A flood having an average frequency of <br />OCcurrence in the order of once in 100 years although the flood may <br />OCcur in any year. It is based on statistical anlllysesof stream- <br />flow records availahle for the watershed and analY5ea of rainfall <br />and runoff characteristics in the general region of the watershed. <br />Left or Right Bank. The bank on the lett or riqht side of a river, <br />stream, Or watercourse, looking downstream. <br />Natural floodway. The channel of a watercour5e and those portions <br />ot the adjoining flood plain which are reasonably required to carry <br />and discharge the floodwaters of a 5elected probability~of-occurrence <br />flood. <br />Stdn~drd Project Flood. The flood that may be e~pected from the ID05t <br />severe COmbination of meteorological and hydrological conditions <br />that is considc~ed reasonably charactoristic of the geographical area <br />illwhichthcdr"in",gcb"sini5Ioc..~d, ""cluding""tremelyrarp. <br />combin~tions. Peak discharges for these floods are generally about <br />40t to 50% of the probable rrkl"imum floods for the a<lmebasins. Such <br />floods, a5 used by the Corps of Engineer5, are intended as practi- <br />cable e"pre5sions of the degree of protection that should be sought <br />in the design of flood c,mtrol works. the failure of which might <br />b"di,.,.strol.ls. <br /> <br />A-31 <br />