new products of the usgs 3d elevation...

New Products of the USGS 3D Elevation Program

(3DEP)Amanda Lowe, Geographer, USGS

ESRI User Conference 2015Tuesday, July 21st, 2015

USGS 3D Elevation Program (3DEP)

3DEP Operations

3DEP Operations

Conveyance TransformerFeatherweightProject Seam

3DEP ProductsLayer

Seamless DEM2 Arc Second (~ 60 meter resolution)1 Arc Second (~ 30 meter resolution)1/3 Arc Second (~ 10 meter resolution)

Project Based DEM1/9 Arc Second (~ 3meter resolution)1 meter5 meter

Source DataSource DEM – Original Product Resolution (OPR)Digital Surface Model (DSM)Orthorectified Radar Intensity Imagery (ORI)Lidar Point Cloud

3DEP ProductsLayer

Seamless DEM2 Arc Second (~ 60 meter resolution)1 Arc Second (~ 30 meter resolution)1/3 Arc Second (~ 10 meter resolution)

Project Based DEM1/9 Arc Second (~ 3meter resolution)1 meter5 meter

Source DataSource DEM – Original Product Resolution (OPR)Digital Surface Model (DSM)Orthorectified Radar Intensity Imagery (ORI)Lidar Point Cloud

NEW to The National Map!

Seamless DEM

• 2 Arc-second, 1 Arc-second & 1/3 Arc-second

- Seamless- Geographic Coordinate System- Bare Earth- Hydroflattened- 1 Degree Blocks- Formats: ArcGrid, IMG and GridFloat

2 Arc-second

1:40,000

1 Arc-second

1:40,000

1/3 Arc-second

1:40,000

Project Based DEM

• 1/9 Arc-second

- Bare Earth- Geographic Coordinate System- 15 minute tiles- Format: IMG- No longer being updated

- Still distributed, and is presently the highest resolution standard DEM for about 25% of CONUS

Project Based DEM

• 1 meter

- Bare Earth- Universal Transverse Mercator (UTM)- Hydroflattened- 10 km tiles- Format: IMG- CONUS Only- Coverage will increase as 1 meter, or higher, resolution DEMs

are processed for 3DEP

1 meter DEM

1:10,000

Project Based DEM

• 5 meter

- Alaska only- Bare Earth- Alaska Albers- Hydroflattened- 1 Degree Blocks- Format: ArcGrid

Alaska Ifsar 5 Meter DEM

1:100,000

Alaska Ifsar 5 Meter DEM

1:40,000

Source Data

• Source DEM – Original Product Resolution (OPR)

- Bare Earth- Original Spatial Reference - Original Resolution- Any Hydro Treatment - Full Project - Format: ArcGrid- Not distributed if identical to 1 meter product

Source Data

• Digital Surface Model (DSM)

- Alaska only- Alaska Albers Projection- 5 meter- Hydroflattened- 15 Minute Tiles zipped by 1 Degree Blocks

- As Delivered- Format: TIFF

Alaska Ifsar DSM

1:40,000

Alaska Ifsar 5 Meter DEM

1:40,000

Source Data

• Orthorectified Radar Intensity Imagery (ORI)

- Alaska only- Alaska Albers Projection- 0.625 meter- 15 Minute Tiles zipped by 1 Degree Blocks

- As Delivered- Format: TIFF

Alaska Ifsar ORI

1:40,000

Source Data

• Lidar Point Cloud (LPC)

- Point Classifications- Tiled- Original Spatial Reference – As Delivered- Original Tile Size – As Delivered- Format: LAS

Lidar Point Cloud

Photo Credit: Ray Fuoto, http://panoramio.com/photo/42448850

Spatial Metadata

• Product Based

- Included with each delivery bundle

Spatial Metadata

• Full Extent

- Available directly from FTP - Link within each delivery bundle- ftp://internalrockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/El

evation/

The National Map nationalmap.gov

Access

• The National Map- http://viewer.nationalmap.gov/beta/bulk_client/

• Direct FTP Access- ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/

• Science Base- https://www.sciencebase.gov/

• GeoPlatform- https://www.geoplatform.gov

• Data.gov - http://www.data.gov/