Laserfiche WebLink
<br />Zones A2, A3, <br />and A5: <br /> <br />Speqial Flood Hazard Areas inundated by <br />the ilOO-year flood; with base flood <br />ele~ations shown, and zones subdivided <br />accqrding to FHFs. <br /> <br />Zone B: <br /> <br />Are~s between the Special Flood Hazard <br />Areas and the limits of the 500-year <br />flood; areas that are protected from <br />the '100- or 500-year floods by dike, <br />levee, or other local water-control <br />structure; areas subject to certain <br />typ~s of lOa-year shallow flooding where <br />, <br />depths are less than 1.0 foot; and areas <br />subject to lOa-year flooding from sources <br />with drainage areas less than 1 square <br />mile. Zone B is not subdivided. <br /> <br />Zone C: <br /> <br />Areas of minimal flood hazard; not sub- <br />divided. <br /> <br />The flood elevation difference~, FHFs, flood insurance zones, and <br />base flood elevations for each!flooding source studied in detail <br />in the community are summarized in Table 3. <br /> <br />5.4 Flood Insurance Rate Map Descr~ption <br /> <br />The Flood Insurance Rate Map for the Town of Rangely is, for insur- <br />ance purposes, the principal Product of the Flood Insurance Study. <br />This map contains the officialidelineation of flood insurance zones <br />, <br />and base flood elevations. Ba$e flood elevation lines show the <br />locations of the expected wholJ-foot water-surface elevation of <br />the base (lOa-year) flood. ThJ base flood elevations and zone <br />numbers are used by insurance agents, in conjunction with structure <br />elevations and characteristics; to assign actuarial insurance rates <br />to structures and contents insured under the NFIP. <br /> <br />6.0 OTHER STUDIES <br /> <br />A 1982 storm-drainage master plan wa* developed by Claycomb Engineers <br />and included hydrologic data, culvert capacities, and channel improvement <br />data for College Canyon Draw and coai Mine Draw (Reference 3). The report <br />was used as an informational source since it did not contain any flood <br />plain or flood profile delineations.' Areas of flooding problems were <br />noted and agreed with what was found from water-surface profile computa- <br />tions. <br /> <br />A 1977 Flood Insurance Study has been prepared for the Town of Rangely <br />(Reference 9). The hydrologic analY$es in the 1977 Flood Insurance Study <br />compared well to peak flows determin$d for this study and the flows <br />determined by Claycomb Engineers (Re~erence 3). Peak flows determined <br /> <br />] 8 i <br />