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The locations of the reaches determined for the flooding sources of Bear Creek are shown on the Flood Profiles (Exhibit 1.) and summarized in Table 3. 5.2 Flood Hazard Factors The Flood Hazard Factor (FHF) is ;used to establish relationships between depth and frequency of f~ooding in any reach. This rela- .tionship is then used with depth~damage relationships for various classes of structures to establi~h actuarial insurance rate tables. The FHF for a reach is the average weighted difference between the 10- and 100-year flood water-surface elevations rounded to the nearest one-half foot, multiplied by 10, and shown as a three- digit code. For example, if the 'difference between water-surface elevations of the 10- and 100-year floods is 0.7 foot, the FHF is 005; if the difference is 1.4Ifeet, the FHF is 015; if the difference is 5.0 feet, the FHF is 050. When the difference between the 10- and 100-year flood water~surface elevations is greater than 10.0 feet, it is rounded to the nearest whole foot. 5.3 Flood Insurance Zones Flood insurance zones and zone nqmbers are assigned based on the type of flood hazard and the FHFi respectively. A unique zone number is associated with each pQssible FHF, and varies from 1 for a FHF of 005 to a maximum ofl30 for a FHF of 200 or greater. Zone A: Special Flood Hazard Areas inundated by the 100-year flood, determined by approximate methods; no base flood elevations shown or FHFs determined. Zone AO: Special Flood Hazard Areas inundated by ty~es of 100-year shallow flooding where I depths are between 1.0 and 3.0 feet; ,depths are shown, but no FHFs are determined. Zones A3 and A6: Special Flood Hazard Areas inundated by the lQO-year flood; with base flood elevations shown, and zones subdivided according to FHFs. Zone B: Areaslbetween the Special Flood Hazard Areas I and the limits of the 500-year flood, areas that are protected from the lQO- or 500-year floods by dike, 12