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<br />= <br /> <br />Areas between the Special Flood Hazard <br />Areas and the limits of the SOO-year <br />flood, including areas of the SOO-year <br />flood plain that are protected from the <br />laO-year flood by dike, levee, or other <br />water control structure; also areas <br />subject to certain types of laO-year <br />shallow flooding where depths are less <br />than 1.0 foot; and areas subject to <br />laO-year flooding from sources with ~ <br />drainage areas less than 1 square mile. <br />Zone B is not subdivided. <br /> <br />Zone B: <br /> <br />Zone C: <br /> <br />Areas of minimal flooding. <br /> <br />S.4 Flood Insurance Rate Map Description <br /> <br />The Flood Insurance Rate Map for the Town of Breckenridge is, for <br />insurance purposes, the principal result of the Flood Insurance <br />Study. This map (published separately) contains the official <br />delineation of flood insurance zones and base flood elevation <br />lines. Base flood elevation lines show the locations of the <br />expected whole-foot water-surface elevations of the base (100- <br />year) flood. This map is developed in accordance with the latest <br />flood insurance map preparation guidelines published by the Federal <br />Insurance Administration. <br /> <br />, <br /> <br />6.0 OTHER STUDIES <br /> <br />A Flood Insurance Study is being conducted for Summit County (Reference 9). <br />The results of this study are consistent with the Summit County study. <br /> <br />A study entitled Flood Plain Information, Breckenridge, Colorado, by <br />Leonard Rice Consulting Engineers, Inc., for the Colorado Water Conserva- <br />tion Board and the Town of Breckenridge was conducted in 1975 (Refer- <br />ence 1). This report presented information on the flood hazards along <br />the Blue River in Breckenridge and included maps delineating the 100- <br />and SOD-year flood plains. In many places along the Blue River, the <br />flood plains have changed since 1975, due to areas of excavation or <br />fill along or within the channel, and as a result of culvert improvements. <br />Generally, this has resulted in a decrease in water-surface elevations <br />in several areas from those published in the original report. Flood <br />elevations along Lehman, Illinois, and Sawmill Gulches, published in <br />the 1975 report, have also been revised. On these tributaries, detailed <br />backwater calculations were completed where approximate methods were <br /> <br />17 <br />