Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Contour isolines with interval in feet as defined by numerical suffix to data tile. For example t22r04_ctr005 indicates contours for the township 24, range 04 tile with a 5-foot contour interval. Zone and region layers are constructed with a greater contour interval such as _ctr010 representing a 10-foot contour interval. All tiles have identical attribute structures with defined index contours. For file name consistency all township tiles are titled with a 005 suffix. However, due to software-limitations in processing and display restrictions not all tiles contain five-foot contours. For Range 2 through 7, tiles contain five-foot contours, regardless of elevation range. For Range 8 through 14, tiles do not contain five-foot contours for elevation ranges greater than 1000. This means that for tiles where all elevations are greater than 1000 there will be no five foot contours. This 1000-foot demarcation was used to reduce file size and improve drawing performance in elevated, high-relief areas while still providing adequate topographic definition. The 1000-ft breakover point was also chosen as a rough urban/rural dividing line. These contours were derived from the digital ground model grid lattice (DGM) developed initially from the mass point LiDAR file, as detailed in the Process section. As several processing steps were involved, including smoothing and artifact removal, these contours are provided only as an interpretation of the earth's surface and do not meet the definition of topography per chapter 18.43 of the Revised Code of Washington. These contours do not depict the topography relative to any particular property. Any use of this information without additional verification by competent professionals is inappropriate.</SPAN></P></DIV></DIV></DIV>
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Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Contour isolines with interval in feet as defined by numerical suffix to data tile. For example t22r04_ctr005 indicates contours for the township 24, range 04 tile with a 5-foot contour interval. Zone and region layers are constructed with a greater contour interval such as _ctr010 representing a 10-foot contour interval. All tiles have identical attribute structures with defined index contours. For file name consistency all township tiles are titled with a 005 suffix. However, due to software-limitations in processing and display restrictions not all tiles contain five-foot contours. For Range 2 through 7, tiles contain five-foot contours, regardless of elevation range. For Range 8 through 14, tiles do not contain five-foot contours for elevation ranges greater than 1000. This means that for tiles where all elevations are greater than 1000 there will be no five foot contours. This 1000-foot demarcation was used to reduce file size and improve drawing performance in elevated, high-relief areas while still providing adequate topographic definition. The 1000-ft breakover point was also chosen as a rough urban/rural dividing line. These contours were derived from the digital ground model grid lattice (DGM) developed initially from the mass point LiDAR file, as detailed in the Process section. As several processing steps were involved, including smoothing and artifact removal, these contours are provided only as an interpretation of the earth's surface and do not meet the definition of topography per chapter 18.43 of the Revised Code of Washington. These contours do not depict the topography relative to any particular property. Any use of this information without additional verification by competent professionals is inappropriate.</SPAN></P></DIV></DIV></DIV>