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<br />flood plain that are protected from <br />the 100-year flood by dike, levee, <br />or other water control structure; also <br />areas subject to certain types of 100- <br />year shallow flooding where depths <br />are less than 1.0 foot, and areas subject <br />to lOa-year flooding from sources with <br />drainage areas less than 1 square mile. <br />Zone B is not subdivided. <br /> <br />Zone C: <br /> <br />Areas of minimal flooding. <br /> <br />The flood elevation differences, FHFs, flood insurance zones, <br />and base flood elevations for each flooding source studied in <br />detail in the community are summarized in Table 3. <br /> <br />5.4 Flood Insurance Rate Map Description <br /> <br />The Flood Insurance Rate Map for Collbran is, for insurance purposes, <br />the principal result of the Flood Insurance Study. This map (pub- <br />lished separately) contains the official delineation of flood <br />insurance zones and base flood elevation lines. Base flood elevation <br />lines show the locations of the expected whole-foot water-surface <br />elevations of the base (lOO-year) flood. This map is developed <br />in accordance with the latest flood insurance map preparation <br />guidelines published by the Federal Emergency Management Agency. <br /> <br />6.0 OTHER STUDIES <br /> <br />Because of the use of more recent data and more accurate study procedures, <br />this Flood Insurance Study supersedes the previously published Flood <br />Hazard Boundary Map for the Town of Collbran (Reference 11). <br /> <br />Plateau Creek, Grove Creek, and Buzzard Creek were previously studied <br />by approximate methods for a Flood Insurance Study for the unincorporated <br />areas of Mesa County, Colorado (Reference 12). The flood boundaries <br />of the county study will not match exactly the flood boundaries of this <br />Flood Insurance Study because of the use of more recent data and more <br />accurate study procedures in this study. <br /> <br />This study is authoritative for the purposes of the National Flood Insur- <br />ance Program, data presented herein either supersede or are compatible <br />with all previous determinations. <br /> <br />7.0 LOCATION OF DATA <br /> <br />Survey, hydrologic, hydraulic, and other pertinent data used in this <br />study can be obtained by contacting the Insurance and Mitigation Division, <br />Federal Emergency Management Agency, Building 710, Denver Federal Center, <br />Lakewood, Colorado 80225. <br /> <br />15 <br />