Detailed elevation data were collected with airborne LiDAR technology for the entire area of Rhode Island between April 22 and May 6, 2011. Rhode Island's data collection was a component of the larger Northeast LiDAR Project. More details about this project and Rhode Island's deliverables are available.
Data Now Available on Provisional Basis
Due to tremendous interest, these data are being distributed by RIGIS on a provisional basis for the sake of expediency. These have not been verified by RIGIS, and are shared in their original formats as delivered by the vendor. Partially-classified point cloud data and bare earth digital elevation model data are available at this time. Raw point cloud data will be distributed via RIGIS at a later date.
Looking ahead, a pending proposal by the URI Environmental Data Center may result in a number of easier-to-use, value-added products that utilize these data. The proposed outputs include re-projected and re-tiled point cloud data, a seamless topographic & bathymetric digital elevation model, hillshade surface with curvature data, 3-ft contour lines, and associated online map services that will be shared with RIGIS.
Important note: These data use the NAD83 UTM Zone 19 North meters horizontal coordinate system and the NAVD88 (GEOID09) meters vertical coordinate system. Please review the project metadata for details.
Three options are currently available for downloading these data:
1) Download individual files using this map.
2) Download files on a municipal basis (download manager friendly).
Get started by selecting a municipality:
3) Download individual files or the entire collection of 1,553 files (download manager friendly).
Supporting Files and Documentation:
Tile Layout (shp)
Hydrographic Breaklines (shp)
Accuracy Assessment (Control Point) Data (pdf, shp, xls)
LAS File Viewing Software
The industry file format standard for point cloud data collected by LiDAR systems is the ".las" or LAS file. More information about free software that can help you better leverage these data is being collaboratively developed by RIGIS members.
New to working with LiDAR data? This list of selected online educational resources will help get you started.
Be sure to also take advantage of the RIGIS email listserv to share your questions and experiences while working with these data. Please do not directly contact the University of Rhode Island Environmental Data Center for assistance with using these data.
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