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Contour lines at 1 foot intervals, derived from a bare earth digital elevation model (DEM), can be displayed to aid in the interpretation of elevation data.
For original vendor metadata and reports containing specific details on the source data, see: https://www.mass.gov/info-details/massgis-data-2021-central-and-eastern-ma-lidar-data |
| summary:
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Contour lines at 1 foot intervals, derived from a bare earth digital elevation model (DEM), can be displayed to aid in the interpretation of elevation data.
For original vendor metadata and reports containing specific details on the source data, see: https://www.mass.gov/info-details/massgis-data-2021-central-and-eastern-ma-lidar-data |
| accessInformation:
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MassGIS, USGS |
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5000 |
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[] |
| description:
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>MassGIS derived these contours from the </SPAN><SPAN STYLE="font-style:italic;">USGS 2021 Central Eastern MA Lidar Project </SPAN><SPAN>data.</SPAN></P><P><SPAN>The Hydro-enforced digital elevation model (DEM) and water's edge breaklines were processed in ArcGIS Pro 3.0.3 using the </SPAN><A href="https://pro.arcgis.com/en/pro-app/latest/tool-reference/3d-analyst/contour-with-barriers.htm" STYLE="text-decoration:underline;"><SPAN>Contours with Barriers</SPAN><SPAN>3D</SPAN></A><SPAN> Analyst Tool using a contour interval of 0.3048 (meters).</SPAN></P><P><SPAN>The resultant isolines' meter elevations were then multiplied by 3.28084 in a new field to display the elevations with a vertical resolution of 1.0 foot</SPAN></P><P><SPAN /></P></DIV></DIV></DIV> |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Because of the density of the data, display is best suited to large scales (1:5,000 or closer).</SPAN></P></DIV></DIV></DIV> |
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| title:
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One-Foot Contours Derived from 2021 Central Eastern MA Lidar Data |
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| tags:
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["MassGIS","Massachusetts","lidar","Digital Elevation Model","DEM","bare earth","contours","breakline","topography","elevation","terrain elevation"] |
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en-US |
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| minScale:
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50000 |
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