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" , fUTUREfLCODS r~inf~ll ~nd runoff oharacteristics of ~tream~ in the general region ~ere compared, adjusted when necessary, and used for the analysis. The ~BY 1935 flood on Fountain Creek at Colorado Springe, with a peak di~charge of 55,000 cubic feet per sscond (c.f,s.) repreeents a magnitude of flood between the Intermediate Regional FLOOd, 46,000 c.f.e. and the Standard Project flood, 74,800 c.f.s. The maximum known floods that have occurred within the geographicsl region are listed in Table 4. Flood characteristice of the Intermediate Regional flood for averaged maximum conditions within the etudy reeches ere shown in Table 5. This section of the rsport discussss the Standard Pro_ ject Flood and the Intermediate Regional flood on fountsin Creek from the mouth of Monument Creek in ColoradO Springs, southeasterly to the El Paso County line. the lower reachss of Jimmy Camp Creek, and BomB of the hazards of greet floode. The Standard Project flood repreeents the reasonable upper limits of expeoted flooding. floods of Intermediate Regional flood size may be expectsd to occur more often, but they will not be as sevsre as the infrequent Stenderd Projed flood. Largs floods hsve occurred in the pest on fountftin Creek and its tributaries in the generel geographical and physiographical region of ColoradO Springa end Fountain. Severe atorme, similar to those causing paat floode, undoubtedly will rscur in the Fountain Crsek watershed to oause future flooda of equal Or greater eize. The magnitude ~f these floods will increase progrsssively downetream reflecting tributary influence. In any determination of futurs floods ~hich may occur on 0 givsn stream, it is dssirable to coneidsr all storms and floods that havs oocurred in the region on watersheds with similar topography, watersho~ cover, and physical characteristics. Standard Proiect flood Only in rare inetances has a specifio stream experienced the large~t flood that ie potentially posaible. Severe aa tha maxi- mum known flood may have been on any given strsam, it is generelly aocepted thetalarger flood ",ill SOOner orlster occur, ThaStan- dard Project flood is defined as the flood that oan be expected ~m the most BeVerS c~bination of meteorological and hydrological conditione that i9 considered reasonably characteristic of the geographical are~ in which the drainage basin ie looatsd, excluding extremely rare canbin~tion~. The Corpe of Engineoro, in cooperation ",ith the NOAA Weather Ssrvice, hae mede comprshsnaive studies and investig~tiona bassd on the bsat records of experionced storms and floods and has evolvsd generalizsd procsdures for estimating the flood potential of waterways. flood characterietica of ths Standard Project Flood for averaged maximum conditions within the etudy reachee are ehown in Table 5. Intermsdiate ReQionol Flood The Intermsdiete' Regional Flood is defined ea having an sverage frequenoy of occurrence of onCe in 100 years, at a desig_ nated location, although it mey oocur in any year and possibly even in suoceseive years. The Intermediate Regional flood rspressnts s major flood, although it ie lses severe than the Standard Project flood. 5ynthetio unit hydrographe and the NOAA Technical Paper No. 40 were used to cherge for the Intermsdiats Regional Flood. rainfall deta taken from develop the p~ak die- Aleo the variabls frocucncv 25 By definition, the Intermediete Regional flood has ~n everage ocourrence frequsncy of once in 100 ~eare. It io imprac_ tioal, howevor, to a~oiqn e freQUsncy to the greater Standard PrQ.i~ct flooel. For purpooee of hazerd svalu"Uon, it ie hport"nt 20