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<br />. <br /> <br />. <br /> <br />. <br /> <br />properly, are based on insufficient or poor-quality data, or do not account for the effects of <br />physical changes that have occurred in the floodplain. <br /> <br />Temporary Bench Mark (TBM}-Bench mark established for a particular Flood Map <br />Project or community. <br /> <br />Topologically Integrated Geographic Encoding and Referencing System (TIGER)- The <br />nationwide digital database of planimetric base map features developed by the U.S. Bureau of <br />the Census for the 1990 Census. <br /> <br />Topology-A branch of geometric mathematics that is concerned with order, continuity, and <br />relative position, rather than actual linear dimensions. <br /> <br />Transect---Cross section taken perpendicular to the shoreline to represent a segment of coast <br />with similar characteristics <br /> <br />Transformation-The conversion of coordinates between alternative referencing systems. <br /> <br />Triangulated Irregular Network (TIN)-A set of non-overlapping triangles developed from <br />irregularly spaced points that is used to represent the facets of a surface. <br /> <br />Undeveloped Coastal Barrier-Any land area adjacent to the Atlantic Ocean, Pacific Ocean, <br />or Great Lakes, where flood insurance will not be available for new or substantially improved <br />structures. These areas are protected by law to discourage development in an attempt to <br />preserve dunes, beaches, and wildlife habitats. <br /> <br />Unit Hydrograph- The hydrograph of direct runoff from a storm uniformly distributed over <br />a drainage basin during a specified unit of time. <br /> <br />Universal Transverse Mercator (UTM) Grid-A system of plane coordinates based on 60 <br />north-south trending zones, each 16 degrees oflongitude wide, that circle the globe. <br /> <br />Unnumbered A Zones-Flood insurance rate zones, designated "Zone A" on a FIRM, that <br />are based on approximate studies. <br /> <br />Vector-A directed line segment with magnitude commonly represented by the coordinates <br />for the pair of endpoints. <br /> <br />Vector Data-Data in the form of an array with one dimension. <br /> <br />Velocity Zone--See Coastal High Hazard Area. <br /> <br />Violation-The failure of a structure or other development to be fully compliant with a <br />community's floodplain management regulations_ A structure or other development without <br />an Elevation Certificate, other certifications, or other evidence of compliance required in <br /> <br />. <br /> <br />TERMS-25 <br /> <br />CTP Coop{'ratJ1U/ <br />Tee/Hllc.!1 <br />Partl1(>r~ <br />