ny statewide elevation program
TRANSCRIPT
November 8, 2015
NY Statewide Elevation Program
Jeff Langella – NYS GIS Program Office
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What is the New York Statewide Elevation Program?
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Goals of the New York Statewide Elevation Program
- Releasing existing data - Collect new data - Coordination
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3DEP Specifications - Quality Level 2 or Better (as defined in USGS LiDAR Base Specifications v1.2)
- <0.71 Aggregate nominal pulse spacing - > 2.0 Aggregate nominal pulse density
- Publicly available - 8 Years old or newer as of 2016
http://nationalmap.gov/3DEP/
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Products Produced and Distributed
by GIS Program Office
- High Resolution Bare Earth Digital Elevation Models
- 2 Foot Interval Contours
- Full Point Cloud
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Products Produced and Distributed
by GIS Program Office
- High Resolution Bare Earth Digital Elevation Models
- 2 Foot Interval Contours
- Full Point Cloud
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Products Produced and Distributed
by GIS Program Office
- High Resolution Bare Earth Digital Elevation Models
- 2 Foot Interval Contours
- Full Point Cloud
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Data Size Trends
Hudson Hoosic 3,370 sq. miles 2m NPS LAS 2m DEM 2-ft Contours
2014 Long Island 1,750 sq. miles 0.7m NPS LAS 1m DEM 1-ft Contours*
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Comparison Between
Existing 10 meter,
Current 2 meter, and
Future DEMs
10 Meter DEM 2 Meter DEM
2 Meter DEM 1 Meter DEM with Breaklines
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Future Goals of New York Statewide Elevation Program - Continue to make available existing data - Continue to create and publish 2 foot contours - Create a Contour Web Service - Create a DEM Web Service - Get statewide Coverage of LiDAR within the next 3-4
years - Re-Collect LiDAR data in the “Questionable Areas” - Find a way to distribute the LAS point clouds to the
public
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Thank You to our Partners including but not limited to NYS DEC, NYSDOT, USGS, FEMA, USDA-NRCS, Counties,
Municipalities, and You.
Questions?
https://gis.ny.gov/elevation/