Zoning Districts | Technical Terms and Land Use Definitions
Ecology 2014 or as revised) that are located within 200 feet of an on-site or off-site Type F or Np stream and/or wetland with a high habitat score greater than or equal to eight on the Washington State Wetland Rating System for Western Washington. Fish and wildlife habitat corridors do not increase stream buffers, except as required to provide a connection between two features as described above. 136. Flag. A fabric sheet of square, rectangular or triangular shape which is mounted on a pole, cable or rope at one end. 137. Flag, government. Any flag or badge or insignia of the United States, state of Washington, King County, City of Sammamish, or official historic plaque of any governmental jurisdiction or agency. 138. Flood fringe. That portion of the floodplain outside of the zero-rise floodway that is covered by floodwaters during the base flood, generally associated with standing water rather than rapidly flowing water. 139. Flood hazard areas. Those areas in the City of Sammamish subject to inundation by the base flood and those areas subject to risk from channel relocation or stream meander including, but not limited to, streams, lakes, wetlands, and closed depressions. 140. Flood insurance rate map. The official map on which the Federal Insurance Administration has delineated some areas of flood hazard. 141. Flood insurance study for King County. The official report provided by the Federal Insurance Administration that includes flood profiles and the flood insurance rate map.
142. Flood protection elevation. An elevation that is one foot above the base flood elevation. 143. Floodplain. The total area subject to inundation by the base flood. 144. Floodproofing. Adaptations that will make a structure that is below the flood protection elevation substantially impermeable to the passage of water and resistant to hydrostatic and hydrodynamic loads including the impacts of buoyancy. 145. Floodway, zero-rise. The channel of a stream and that portion of the adjoining floodplain which is necessary to contain and discharge the base flood flow without any measurable increase in flood height. A “measurable increase in base flood height” means a calculated upward rise in the base flood elevation, equal to or greater than .01 foot, resulting from a comparison of existing conditions and changed conditions directly attributable to development in the floodplain. This definition is broader than that of the FEMA floodway, but always includes the FEMA floodway. The boundaries of the 100-year floodplain, as shown on the flood insurance study for King County, are considered the boundaries of the zero-rise floodway unless otherwise delineated by a sensitive area special study. 146. Floor to area ratio. A measure of development intensity which is determined by dividing gross floor area by lot area. Gross square footage for the purpose of calculating floor to area ratio includes all gross square footage that is above grade including garages. Any visible wall height of more than 3’ shall count towards the gross building square footage.
230 | Title 21: Sammamish Development Code
Effective | January 1, 2022
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