2000 Cayuga County New York Lidar
These data were collected in April of 2000 for the Cayuga County New York Department
of Planning and Economic Development. Elevation points were sampled at densities necessary
to support the generation of contours that meet or exceed United States National Map
Accuracy Standards applicable to the map scales that County tax maps are published
and for the following intervals of contour lines to be depicted: four feet for the
entire county, two feet for the City of Auburn and adjacent area and two feet for
six floodplain areas. This is a bare earth data set, the points, however, are classified
as "Never Classified". There are points returned from water surfaces. Point spacing
is approximately 5 m. Also, there are areas in the county where the data have been
regularized, i.e. gridded points.
Cite this dataset when used as a source.
|Search and Download
|| Distributor information not available
| Point of Contact
Cayuga County Department of Planning and Economic Development
Documentation links not available.
- Cayuga County New York Department of Planning and Economic Development
|Data Presentation Form:
|| Digital image
|Dataset Progress Status
|Data Update Frequency:
|| As needed
||To support the preparation of contour maps and to provide digital data for GIS-based
||2000-04-01 to 2000-04-01
|Spatial Reference System:
|Spatial Bounding Box Coordinates:
|Spatial Coverage Map:
- New York
- Cayuga County
- Lake Ontario
| Use Constraints
|| No constraint information available
|| Fee information not available.
|| Lineage statement not available.
- DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
| Processing Steps
- The LiDAR data were collected in April 2000 for Cayuga County Department of Planning
and Economic Development by EagleScan/3Di LLC For the City of Auburn and adjacent
areas, the data was acquired at an altitude of 1000m (3000 ft) Above Ground Level
(AGL). For the remaining area of the county, the altitude was 2000m (6000 ft) AGL.
- The NOAA Coastal Services Center (CSC) received the files in ESRI shapefile format.
The data were in New York State Plane coordinates, Central Zone, NAD 83, NAVD88 vertical
datum and the vertical units of measure were feet. CSC performed the following processing
to the data to make it available within Digital Coast: 1. The data were converted
from ESRI Shapefile format to las format using LASEdit. 2. The data were converted
from New York State Plane Central coordinates to geographic coordinates. 3. The data
were converted from NAVD88 (orthometric) heights to GRS80 (ellipsoid) heights using
Geoid99. 4. The vertical unit of measure for the data was converted from feet to meters.
5. The LAS data were sorted by latitude and the headers were updated. 6. The data
were filtered to remove outliers.
- The NOAA National Geophysical Data Center (NGDC) received lidar data files via ftp
transfer from the NOAA Coastal Services Center. The data are
currently being served via NOAA CSC Digital Coast at http://www.csc.noaa.gov/digitalcoast/.
The data can be used to re-populate the system. The data are archived in LAS
or LAZ format. The LAS format is an industry standard for LiDAR data developed by
the American Society of Photogrammetry and Remote Sensing (ASPRS); LAZ is a loseless
compressed version of LAS developed by Martin Isenburg (http://www.laszip.org/). The
data are exclusively in geographic coordinates (either NAD83 or ITRF94). The data
are referenced vertically to the ellipsoid (either GRS80 or ITRF94), allowing for
the ability to apply the most up to date geoid model when transforming to orthometric
Metadata Last Modified: 2013-05-07
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