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Area of shallow flooding means an area designated on the FIRM map as an AH or AO zone with a one percent or greater annual chance of flooding to an average depth of one to three feet where a clearly defined channel does not exist, where the path of flooding is unpredictable and where velocity flow may be evident. Such flooding is characterized by ponding or sheet flow. Area of special flood hazard means the land in the floodplain subject to a one percent or greater chance of flooding in any given year. Base flood means the flood having a one percent chance of being equaled or exceeded in any given year. Base flood elevation (BFE) is the elevation shown on a FEMA Flood Insurance Rate Map for zones AE, AH, Al-A30, AR, AR/A, AR/AE, AR/A1-A30, AR/AH, AR/AO, Vl-V30, and VE that indicates the water surface elevation resulting from a flood that has a once percent chance of equaling or exceeding that level in any given year. Basement means any area of a building having its floor sub-grade (below ground level) on all sides. Board of adjustment means the board of adjustment established pursuant to chapter 17.48 of this title. Channel Means the physical confine of a stream or waterway consisting of a bed and stream banks, existing in a variety of geometries. Channelization is the artificial creation, enlargement or realignment of a stream channel. Code of Federal Regulations (CFR) is the codification of the general and permanent Rules published in the Federal Register by the executive departments and agencies of the federal government. It is divided into 50 titles that represent broad areas subject to federal regulation. Community means any political subdivision in the state of Colorado that has authority to adopt and enforce floodplain management regulations through zoning, including, but not limited to, cities, towns, unincorporated areas in the counties, Indian tribes and drainage and flood control districts. Conditional Letter of Map Revision (CLOMR) is FEMA's comment on a proposed project, which does not revise an effective floodplain map, that would, upon construction, affect the hydrologic or hydraulic characteristics of a flooding source and thus result in the modification of the existing regulatory floodplain. Critical facility means a structure or related infrastructure, but not the land on which it is situated, as specified in section 17.56.168 that if flooded may result in significant hazards to public health and safety or interrupt essential services and operations for the community at any time before, during and after a flood (see section 17.56.168). Development means any manmade change to improved or unimproved real estate, including but not limited to buildings or other structures, mining, dredging, filling, grading, paving, excavation Ordinance No. 1625,Series 2012 Page 3 of 31 3