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natural or man-~aused emergencies arise in the City of Pueblo _ Pueblo County area. The plan's concept of operations calls for dis- serninationof"severeweatherwarnings"duringtheearlieststages of a developing flood or other we....ther-induced catastrophe. Subse- quent flood fighting, pvacuation and rescue activities ar.. coordi- nated through an Emergency Operations Center where predesignated officials assist the Civil Defense Oirector in exercising overall control of available reSourceS. Th~ Civil Defense Agency is manned by a full ti~ director and staff located in the Courthouse, Pueblo, Colorado. He and his staff pro~~te continuous liaison with all agencies concerned with Civil Defense in order to continually identify and promote solutions for proble~ areas. " FUTURE FLOODS . This section of the report discusses the Standard Project Flood and the InterJ,ediate Regional Flood on Sixmile Creek in the vicinity of Pueblo, Colorado, and some of the hazards of . cloudburst type floods over ~~ll areas. The Standard Project Flood represents the rea50nable upp~r limits of expected flooding. Floods of Intermediate Regional Flood size may be expected to occur more often, but they will not be as severe as the infrequent Stan~ard Project Flood. Large floods have occurred in the past on the Arkansas River and tributaries in the Pueblo area. Cloudbursts simil..r to those causing past floods will undoubtedly recur in the Sixmile Creek Basin and these torrential rains may be equal to or greater than any rain that has occurred in the past. It is desirable in the de- termination of future floods which may oCCUr on a given stream to consider all storms and floods that have occurred in the region on watersheds with similar topography, ground cover and physical charac- teristics. This has been done in the sixmile Creek Basin where only very limited information is available on b..sin storms and flooding. ~he maxim~~ known floods that have occurred within the Pueblo area are listed in Table 2. . Intermediate Regional Flood The Intermediate Regional Flood is defined as having an aV~rage frequency of occurrence of once in 100 years at a designated location, although it may occur in any year and possibly even in suc- cessive years. The Intermediate Regional Flood represents a major flood, although it is less severe than the Standard Project Flood. The magnitude of this flood on Sixmile Creek was deter- mined by a regional flow frequency analysis from which peak frequency curves were developed. Flood characteristics of the Intermediate Regional Flood for averdged maximum conditions within the study reach are shown in Table 3. . n