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These contours are derived from the LIDAR DEM surface, but are adjusted to conform to features in the National Hydrologic Dataset (NHD) for the purpose of generating aesthetically pleasing maps and figures. It should be noted that to reduce file sizes, nodes were spaced such that contours appear smooth at 1:2400 scale and lower, but finer scales may appear angular. A full set of contours can be found at: https://www.dgs.udel.edu/datasets/elevation-contours-dataset-delaware |
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These contours are derived from the LIDAR DEM surface, but are adjusted to conform to features in the National Hydrologic Dataset (NHD) for the purpose of generating aesthetically pleasing maps and figures. It should be noted that to reduce file sizes, nodes were spaced such that contours appear smooth at 1:2400 scale and lower, but finer scales may appear angular. A full set of contours can be found at: https://www.dgs.udel.edu/datasets/elevation-contours-dataset-delaware |
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Please credit the Delaware Geological Survey |
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5000 |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN>This set of 1-foot contours were derived from a 2014 LIDAR DEM flown for the state of Delaware using a modified version of the USGS Contour Derivation algorithm detailed by Arundel et al. (2018). Details for the LIDAR flight may be found in the report by Quantum Spatial (2015). Contours are indexed at 5-foot intervals and classified as “Normal” or “Depression”. Contours are projected in Delaware State Plane NAD83 (2011) meters and </SPAN><SPAN>the vertical datum of the source DEM was NAVD88</SPAN><SPAN>. </SPAN></P></DIV></DIV></DIV> |
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| title:
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Sussex County: 2014 LIDAR-derived 1-foot contours |
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["Sussex County","Delaware"] |
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en-US |
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500000 |
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