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<br />I <br />I <br /> <br />_....,.i&,;;~.,'..:-~......_.. <br /> <br />,f <br /> <br />Revised hydrologic apd hydraulic analyses <br />Creek, Bear Canyon ~reek, Gregory Canyon <br />Creek, Bluebell Canyon Creek, King's Gulch <br />Creek were done by Greenhorne and O'Mara. <br /> <br />for Sunshine Canyon <br />Creek, Skunk Canyon <br />and Fourmile Canyon <br /> <br />A revised hydraulic analysis for South Boulder Creek was completed <br />in July 1986 by Greenhorne and O'Mara, Inc. and was incprporated <br />into this study. <br /> <br />" <br /> <br />. " <br />, " <br /> <br />1.3 <br /> <br />Coordination <br /> <br />~ ~ . <br /> <br />~1.'; , <br />}," <br />,~~ ~. ~ <br />~"":i.i " <br />~<3 " <br /> <br />:;- <br /> <br />:-" <br /> <br />An initial coordination meeting for this revised study was held in <br />the City of Boulder on July 30, 1981. This meeting, attended by <br />representatives of the City of Boulder, FEMA, MSM/sp Group, Urban <br />Drainage and Flood Control District (UDFCD), Colorado Water <br />Conservation Board (CWCB), and Boulder County, was held to discuss <br />the nature and purpose of the study, and the scope and limits of <br />work. <br /> <br />The following agencies and individuals were contacted and supplied <br />information used in the preparation of this revised study: u.S. <br />Geological Survey (USGS); U.S. Army Corps of Engineers (COE), <br />Omaha District; CWCB; City of Boulder Engineering Department; <br />'<:. Boulder County Engineering Department; UDFCD; and Colorado <br />Department of Highways. <br /> <br />2.0 AREA STUDIED <br /> <br />2.1 <br /> <br />Scope of Study <br /> <br />, :!! <br /> <br />This Flood Insurance Study covers the incorporated areas of the <br />City of Boulder, Boulder County, Colorado. The area of study is <br />shown on the Vicinity Map (Figure 1). <br /> <br />For the original <br />were studied by <br />corporate limits. <br /> <br />study, Boulder, South Boulder, and Dry Creeks <br />detailed methods for the extent within the <br /> <br />'" <br /> <br />For this revised study, the streams studied by detailed method and <br />the reaches studied are shown in Table 1. <br /> <br />The areas studied by detailed methods were selected with priority <br />given to all known flood hazard areas and areas of projected <br />development or proposed construction. <br /> <br />The following flooding sources were studied by approximate <br />methods: Gregory Creek; Bluebell Canyon Creek: Kings Gulch; Viele <br />Channel; upper reaches of Bear Canyon Creek; Skunk Canyon Creek; <br />Davids Draw; Anderson Ditch; Little Dry Creek; and Sunshine Gulch. <br /> <br />2 <br />