DEMs
DATA SOURCE |
WEB PAGE ADDRESS |
NAME |
RESOLUTION |
FORMAT |
COST |
DESCRIPTION |
NASA |
SRTM1 |
30 metre |
HGT |
Free |
The Shuttle Radar Topography Mission (SRTM) obtained elevation data on a near-global scale to generate the most complete high-resolution digital topographic database of Earth. SRTM consisted of a specially modified radar system that flew onboard the Space Shuttle Endeavour during an 11-day mission in February of 2000. |
|
SRTM3 |
90 metre |
HGT |
Free |
|||
National Geospatial-Intelligence Agency (NGA) |
http://geoengine.nga.mil/geospatial/SW_TOOLS/NIMAMUSE/webinter/rast_roam.html |
DTED Level 0 |
900 metre |
DT0 |
Free |
Provides a gross representation of the earth's surface for general modelling and assessment activities. |
National Oceanic and Atmospheric Administration (NOAA) |
GLOBE |
1,000 metres |
Binary raster |
Free |
GLOBE is an internationally designed, developed, and independently peer-reviewed global DEM. |
|
ETOPO2v2 |
4,000 metres |
NetCDF and raw binary |
Free |
ETOPO2v2 was generated from a digital data base of land and sea- floor elevations on a 2-minute latitude/longitude grid |
||
LiDAR |
Varies |
LAS |
Free |
LIDAR and IfSAR data repository for select coastal areas of the U.S. |
||
3 Arc-Second Coastal Relief Model |
90 metres |
Binary and ASCII raster |
Free |
Extends from the coastal state boundaries to as far offshore as the NOS hydrographic data will support a continuous view of the seafloor. |
||
Tsunami Inundation Gridding |
10 to 90 metres |
ASCII raster |
Free |
A combined bathymetric-topographic high-resolution DEM for select U.S. coastal regions. |
||
U.S. Geological Survey (USGS) |
National Elevation Dataset (NED) |
10 & 30 metres |
Tiff |
Free |
The NED is a seamless raster product derived primarily from USGS 10- and 30-meter Digital Elevation Models (DEMs), along with higher resolution data where available. NED data for the conterminous United States, Hawaii, and Puerto Rico. |
|
ASTER Global Digital Elevation Model |
ASTER GDEM |
30 metres |
Tiff |
Free |
ASTER GDEM is an easy-to-use, highly accurate DEM covering all the land on earth, and available to all users regardless of size or location of their target areas. |
Watercourses / Streams
DATA SOURCE |
WEB PAGE ADDRESS |
FORMAT |
COST |
DESCRIPTION |
National Oceanic and Atmospheric Administration (NOAA) |
ESRI Shape |
Free |
This product is a medium resolution dataset comprises over 75,000 nautical miles of coastline (nearly 2.5 million vertices), representing the entire conterminous United States of America. |
|
ESRI Shape |
Free |
GSHHS is a high-resolution shoreline data set amalgamated from two databases in the public domain. The shorelines are constructed entirely from hierarchically arranged closed polygons. |
||
PNW Reach File |
ESRI Shape |
Free |
The Pacific Northwest (PNW) River Reach Files are a geo-referenced river reach data layer that encompasses the Columbia River Basin within the conterminous United States, the coasts of Oregon and Washington, Puget Sound in Washington, the Klamath and Goose Lake Basins in southern Oregon and the Bear Lake Basin in southeastern Idaho. The system is basically a 1:100,000 scale enhancement of the pre-existing 1:250,000 scale EPA River Reach File 2 (RF2). |
|
National Hydrography Dataset (NHD) |
ESRI Shape |
Free |
The National Hydrography Dataset (NHD) is a comprehensive set of digital spatial data that contains information about surface water features such as lakes, ponds, streams, rivers, springs and wells. |
