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<br />Zones A2, A3, A4, AS, <br />and A7: <br /> <br />Special Flood Hazard Areas inundated <br />by the lOO-year flood; with base flood <br />elevations shown, and zones subdivided <br />according to FHFs. <br /> <br />Zone B: <br /> <br />Areas between the Special Flood Hazard <br />Areas and the limits of the SOO-year <br />flood; areas that are protected from <br />the 100- or SOO-year floods by dike, <br />levee, or other local water-control <br />structure; areas subject to certain <br />types of lOO-year shallow flooding <br />where depths are less than 1.0 foot; <br />and areas subject to lOO-year flooding <br />from sources with drainage areas less <br />than 1 square mile. Zone B is not <br />subdivided. <br /> <br />Zone c: <br /> <br />Areas of minimal flood hazard; not <br />subdivided. <br /> <br />The flood elevation differences, FHFs, flood insurance zones, <br />and base flood elevations for each flooding source studied in <br />detail in the community are summarized in Table 3. <br /> <br />5.4 Flood Insurance Rate Map Description <br /> <br />The Flood Insurance Rate Map for Limon is, for insurance purposes, <br />the principal product of the Flood Insurance Study. This map <br />contains the official delineation of flood insurance zones and <br />base flood elevations. Base flood elevation lines show the locations <br />of the expected whole-foot water-surface elevation of the base <br />(lOO-year) flood. The base flood elevations and zone numbers <br />are used by insurance agents, in conjunction with structure eleva- <br />tions and characteristics, to assign actuarial insurance rates <br />to structures and contents insured under the NFIP. <br /> <br />6.0 OTHER STUDIES <br /> <br />Two small watershed projects, Limon Watershed Protection Project and <br />Big Sandy Creek Watershed Protection project, were planned and constructed <br />during the period 1957 through- 1966 under the Watershed Protection and <br />Flood Prevention Act (Public Law 566, 83rd Congress). The Big Sandy <br />Creek project is located in the upper reaches of the Big Sandy Creek <br />basin near Simla and Ramah. The Limon project is on tributaries to <br />Big Sandy Creek, north of Limon. Watershed work plan reports are available <br />for both projects (References 3 and 4). Hydrologic and topographic <br />information used in these projects were not of sufficient detail for <br />flood plain management purposes. Also more current procedures and informa- <br />tion are now available. <br /> <br />18 <br />