The SRTM Water Body Data (SWBD) is a geographical dataset (2003) encoding high-resolution worldwide coastline outlines in a

vector Vector most often refers to: *Euclidean vector, a quantity with a magnitude and a direction *Vector (epidemiology), an agent that carries and transmits an infectious pathogen into another living organism Vector may also refer to: Mathematic ...

format, published by

NASA The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the US federal government responsible for the civil List of government space agencies, space program ...

and designed for use in geographic information systems and mapping applications. It was created by BAE Systems ADR for the US

National Geospatial-Intelligence Agency The National Geospatial-Intelligence Agency (NGA) is a combat support agency within the United States Department of Defense whose primary mission is collecting, analyzing, and distributing geospatial intelligence (GEOINT) in support of natio ...

(NGA) as a complementary product during editing of the

digital elevation model A digital elevation model (DEM) or digital surface model (DSM) is a 3D computer graphics representation of elevation data to represent terrain or overlaying objects, commonly of a planet, moon, or asteroid. A "global DEM" refers to a discrete g ...

database of the

Shuttle Radar Topography Mission The Shuttle Radar Topography Mission (SRTM) is an international research effort that obtained digital elevation models on a near-global scale from 56°S to 60°N, to generate the most complete high-resolution digital topographic database of Ea ...

(SRTM). SWBD data covers the Earth's surface between 56° southern latitude and 60° northern latitude. It is distributed in

ESRI shapefile The shapefile format is a geospatial vector GIS file formats, data format for geographic information system (GIS) software. It is developed and regulated by Esri as a mostly open standard, open specification for data interoperability among Esri ...

format, divided into 12,229 files, each covering one 1°-by-1° tile of the Earth's surface. SWBD data is in the

public domain The public domain (PD) consists of all the creative work to which no exclusive intellectual property rights apply. Those rights may have expired, been forfeited, expressly waived, or may be inapplicable. Because those rights have expired, ...

and is made available online for free download by NASA.

External links

SWBD data download site

References

Shuttle Radar Topography Mission
Geographic information systems National Geospatial-Intelligence Agency