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fUTURE fLOODS rainfall and runoff characteristics of streams in the general region were comp~red, adjusted when necessary, and used for the analysis. The ~ay 1935 flood on Fountain Creek at ColoradO Springs. with a psak discharge of 55,000 cubic fsst per second (c.f.s.) represents a magnitude of flood between the Intermediate Regional flood, 46,000 c.f.s. end the Standard Project flood, 74,800 c.f.s. The maximum known floods that have occurred within the geographical rS9ion are listed in Table 4. flood charaoteristios of the Intermediate Regional flood for averaged maximum conditions within the etudy reaches are shown in Table S. Thie section of the report discusses the Standard Pro- ject flood end the Intermediate Regional flood on fountain Creek from the mouth of Monument Cnek in ColoredoSprings, southeasterly to the [1 Paeo County line, the lower reaohes of Jimmy Camp Creek, and eome of ths hazards of great flOOds. The Standard Project flood represents the reasonable upper limits of expected flooding. floods of Intermsdiata Regional flood size may be expected to oocur mOre often, but they will not be as severe ae the infrequent Standard Project flood. Large floods have occurred in the paet on fountain Creek and its tributaries in ths gsneral geographical and physiograpnical region of ColoradO Springs and fountain. Severe storme, Similar to thoso cauaing pest floods, undoubtedly will recur in the fountain Creek waterahed to cause future floods of equal Or greater size. The magnitude of these floods will increaee progressively downstream reflecting triOutary influence. In any determination of future flooda which may OCcur on e given etream, it io desirable to consider all storma end floods that have occurred in the region on watereheds with similar topography, watershed cover, and physical characterietice. Standard Projact flood Only in rare instances has e specific stream experienced the largest flood that is potentially poesible. Severe as the maxi- mum known flood may have been on any given stream, it is generally acoepted that a larger flood will sOoner or later occur. The Stan- dard Project flood is defined as the flood that Can bs expectod ~m the most severe combination of meteorological and hydrological conditione that ia considered reasonebly characteristic of tho geographic",l ",rea in IlIhich tho drainage basin is located, e~cluding o~tremely rare combln~tiono. The Corps of (ngineers, in cooperation with the NOAA Weather Service, hoe made comprohonsive studies and investigations based on the best records of experianc~d stormo end floods and has evolved generalized procedures for estimating the flood potential of waterlllays. flood charactoristics of tho Standard Project Flood for averagod maximum conditions within the study reaches ara shOlllnin Tabl.. 5. Intermediate Reoional flood The Intermediata Regional flood is defined aa heving an average frequency of occurrence of OnCe in 10C years, at a deeig_ nated location, although it may occur in any year and possibly even in auccoceivo yoaro. The Intermediate Regional flood ropreeente e major flood, elthough it ie leas severa than the Standard Project flood. fre~"ancv Synthetic unit hydrogrephe and rainfall data token from the NCAA Technical Paper No. 40 were used to develop the peak dis_ charge for the Intermediate Regional flood. Alao the variable By definition, the Intermediate Regional flOOd hae an averaqe OCcurrence freQUency of onCe in 100 ,eare. It ia inpr~c_ tic~l, however, to assign a fr~quancy to the greater Standard PrC'iactFlo,,,'. forp'JrpaseaofhazardcvaluuUon,J.tisllllpurtant " "