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1 foot Digital Elevation Model (DEM)

Metadata Updated: September 23, 2022

NYC 1foot Digital Elevation Model: A bare-earth, hydro-flattened, digital-elevation surface model derived from 2010 Light Detection and Ranging (LiDAR) data. Surface models are raster representations derived by interpolating the LiDAR point data to produce a seamless gridded elevation data set. A Digital Elevation Model (DEM) is a surface model generated from the LiDAR returns that correspond to the ground with all buildings, trees and other above ground features removed. The cell values represent the elevation of the ground relative to sea level. The DEM was generated by interpolating the LiDAR ground points to create a 1 foot resolution seamless surface. Cell values correspond to the ground elevation value (feet) above sea level. A proprietary approach to surface model generation was developed that reduced spurious elevation values in areas where there were no LiDAR returns, primarily beneath buildings and over water. This was combined with a detailed manual QA/QC process, with emphasis on accurate representation of docks and bare-earth within 2000ft of the water bodies surrounding each of the five boroughs.

Please see the following link for additional documentation- https://github.com/CityOfNewYork/nyc-geo-metadata/blob/master/Metadata/Metadata_DigitalElevationModel.md

Access & Use Information

Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. See Terms License: No license information was provided.

Downloads & Resources

Dates

Metadata Created Date November 10, 2020
Metadata Updated Date September 23, 2022

Metadata Source

Harvested from NYC JSON

Additional Metadata

Resource Type Dataset
Metadata Created Date November 10, 2020
Metadata Updated Date September 23, 2022
Publisher data.cityofnewyork.us
Unique Identifier Unknown
Maintainer
Identifier https://data.cityofnewyork.us/api/views/dpc8-z3jc
Data First Published 2013-08-23
Data Last Modified 2018-09-10
Category City Government
Public Access Level public
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.cityofnewyork.us/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id b8c1b2c0-7c5c-4ab8-8931-a016cd6618ff
Harvest Source Id 1696593e-c691-4f61-a696-5dcb9e4c9b4c
Harvest Source Title NYC JSON
Homepage URL https://data.cityofnewyork.us/d/dpc8-z3jc
Source Datajson Identifier True
Source Hash fcfa9e5eeb265257d83164dce83f5fc84a6ebeee
Source Schema Version 1.1

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