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Zone B: Areas between the Special Flood Ha2ard Areas and the limits of t~e SOQ-year flood, including areas of the SOD-year flood plain that are protected from the lOO-year flood by dike, levee, or other water control structure; also areas subject to certain types of lOO-year shallow flooding where depths are less than 1.0 foot; and areas subject to lOO-year flooding from sources with drainage areas less than 1 square mile. Zone B is not subdivided. Zone c: Areas of minimal flooding. The flood elevation differences, Flood Hazard Factors, flood insur- an~e zones, anc base flood elevatio~s ~or each flooding source studied in detail in the community are summarized in Table 3. 5.4 Flood Insurance Rate Map Description The Flood Insurance Rate Map for Idaho Springs is, for insurance purposes, the p~incipal result of tile Flood Insurance Study~ Tnis map (published separately) contains the official delineation of flood insurance zones and base flood elevation lines. Base flood elevation lines show the locations of the expected w~ole-foot water-surface elevations 0= the base (laO-year) =lood. This map is developea in accordance with the latest flood insurance map prepara- tion guidelines published by the Federal Insurance Administration. 6.0 OTHER STUDIES No other studies, other than those discussed in Section 3.1, were available concerning flood hazards in Idaho Springs. ~o conflicting data or results were encountered. This study is authoritative for the purposes of the National Flood Insurance Program; data presented herein either supersede or are compatible wit~ all previous determinations. 7.0 LOCATION OF DATA Survey, ~ydr~logic, hydraulic, and other pertine~t data used in this study C~L be obtaine2 by contacting t~e office of the Federal Insura~ce Administration, Regional Director, Room 311, 909 17th street, Denver, Colorado 80202. 15