{ "culture": "en-US", "name": "", "guid": "", "catalogPath": "", "snippet": "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.\nFor 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", "description": "

MassGIS derived these contours from the <\/SPAN>USGS 2021 Central Eastern MA Lidar Project <\/SPAN>data.<\/SPAN><\/P>

The Hydro-enforced digital elevation model (DEM) and water's edge breaklines were processed in ArcGIS Pro 3.0.3 using the <\/SPAN>Contours with Barriers<\/SPAN>3D<\/SPAN><\/A> Analyst Tool using a contour interval of 0.3048 (meters).<\/SPAN><\/P>

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><\/DIV><\/DIV><\/DIV>", "summary": "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.\nFor 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", "title": "One-Foot Contours Derived from 2021 Central Eastern MA Lidar Data", "tags": [ "MassGIS", "Massachusetts", "lidar", "Digital Elevation Model", "DEM", "bare earth", "contours", "breakline", "topography", "elevation", "terrain elevation" ], "type": "", "typeKeywords": [], "thumbnail": "", "url": "", "minScale": 50000, "maxScale": 5000, "spatialReference": "", "accessInformation": "MassGIS, USGS", "licenseInfo": "