Laserfiche WebLink
<br />I~ <br /> <br />100-YEAR FLOOD PLAIN <br /> <br />-, <br /> <br />FLQOQWAY <br />F RING E <br /> <br /> <br />FLOODWAY <br /> <br />FLOODWAY <br />FRINGE <br /> <br />STAEAM <br />CHANNEL <br /> <br />FLOOD ELEVATION WHEN <br />CONFINED WITHIN FLQODWAY <br /> <br />;. <br /> <br /> <br />AREA OF FLOOD PLAIN THAT COULD <br />BE USED FDA DEVELOPMENT BY <br />RAISING GROUND <br /> <br />FLOOD ELEVATION <br />BEFOREENCAOACHMENT <br />ON FL.-OOD Pl..-AIN <br /> <br />LINE AS IS THE FLOOD ELEVATION BEFORE ENCROACHMENT <br />LINE CO IS THE FLOOD ELEVATION AFTER ENCROACHMENT. <br />'SURCHARGE IS NOT TO EXCeED 1.0 FOOT IFtA REQUIREMENT) OR LESSER AMOUNT IF SPECIFIED BY STATE. <br /> <br />Figure 2. Floodway Schematic <br /> <br />5.0 INSURANCE APPLICATION <br /> <br />In order to establish actuarial insurance rates, the Federal Insurance <br />Administrat~n has developed a process to transform the data from the <br />engineering study into flood insurance criteria. This process includes <br />the determination of reaches, Flood Hazard Factors, and flood insurance <br />zone designations for each flooding source studied in detail affecting <br />the Town of Breckenridge. <br /> <br />541 Reach Determinations <br /> <br />Reaches are defined as lengths of watercourses having relatively <br />the same flood hazard, based on the average weighted difference in <br />water-surface elevations between the 10- and 100-year floods. <br />This difference does not have a variation greater than that indicated <br />in the following table for more than 20 percent of the reach: <br /> <br />Average Difference Between <br />10- and 100-vear Floods <br /> <br />Variation <br /> <br />Less than 2 feet <br />2 to 7 feet <br />7.1 to 12 feet <br />More than 12 feet <br /> <br />0.5 foot <br />1. 0 foot <br />2.0 feet <br />3.0 feet <br /> <br />15 <br />