SRTM Water Body Data

Index

Metadata file identifier
  • c3f2a33b-32dc-11e4-a97f-bc5ff4764ffa

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    Language
  • UNKNOWN

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    Contact
    Organisation name
  • U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center

  • Position name
  • Long Term Archive (LTA) Representative

  • Contact information
    Phone
    Voice
  • 605-594-6151

  • Facsimile
  • 605-594-6589

  • Address
    Delivery point
  • 47914 252nd Street

  • Administrative area
  • SD

  • Postal code
  • 57198-0001

  • Electronic mail address
  • lta@usgs.gov

  • Hours of service
  • 0800 - 1600 CT, M-F, -6 h GMT

  • Role
  • publisher

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    Metadata date stamp
  • 2014-08-26

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    Metadata standard name
  • ISO 19115 Geographic Information - Metadata

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    Metadata standard version
  • http://metadata.dgiwg.org/ISO19115/ISO19115_v0_7.htm

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    Identification Information
    Citation
    Title
  • SRTM Water Body Data

  • Date
    Date
  • 2008-12-10

  • Date Type
  • publication

  • Cited responsible party
    Organisation name
  • U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center, Long Term Archive (LTA) Representative

  • Role
  • originator

  • Abstract
  • The SRTM Water Body Data files are a by-product of the data editing performed by the National Geospatial-Intelligence Agency (NGA) to produce the finished SRTM Digital Terrain Elevation Data Level 2 (DTED® 2). In accordance with the DTED® 2 specification, the terrain elevation data have been edited to portray water bodies that meet minimum capture criteria. Ocean, lake and river shorelines were identified and delineated. Lake elevations were set to a constant value. Ocean elevations were set to zero. Rivers were stepped down monotonically to maintain proper flow. After this processing was done, the shorelines from the one arc second (approx. 30-meter) DTED® 2 were saved as vectors in ESRI 3-D Shapefile format.

  • Purpose
  • The SRTM Water Body Data files are a by-product of the data editing performed by the National Geospatial-Intelligence Agency (NGA) to produce the finished SRTM Digital Terrain Elevation Data Level 2 (DTED® 2). In accordance with the DTED® 2 specification, the terrain elevation data have been edited to portray water bodies that meet minimum capture criteria. Ocean, lake and river shorelines were identified and delineated. Lake elevations were set to a constant value. Ocean elevations were set to zero. Rivers were stepped down monotonically to maintain proper flow. After this processing was done, the shorelines from the one arc second (approx. 30-meter) DTED® 2 were saved as vectors in ESRI 3-D Shapefile format.

  • Point of contact
    Role
  • Point of contact

  • Descriptive keywords
    Keyword
  • National Imagery and Mapping Agency, Radar, JPL, NGA, Water Body, Elevation, SRTM, Mapping

  • Type
  • theme

  • Thesaurus name
    Title
  • None

  • Date
    Date
  • 0001-01-01

  • Date Type
  • publication

  • Descriptive keywords
    Keyword
  • South America

  • Type
  • place

  • Thesaurus name
    Title
  • None

  • Date
    Date
  • 0001-01-01

  • Date Type
  • publication

  • Spatial representation type
  • vector

  • Language
  • eng

  • Environment description
  • Microsoft Windows Server 2008 R2 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.1.0.3035

  • Extent
    Geographic element
    West bound longitude
  • -119.000000

  • East bound longitude
  • -31.999861

  • South bound latitude
  • -56.000139

  • North bound latitude
  • 30.000000

  • Supplemental information
  • In most cases, two orthorectified image mosaics (one for ascending passes and one for descending passes) at a one arc second resolution were available for identifying water bodies and delineating shorelines in each 1 x1 cell. These were used as the primary source for water body editing. The guiding principle for this editing was that water must be depicted as it was in February 2000 at the time of the shuttle flight. A Landcover water layer and medium-scale maps and charts were used as supplemental data sources, generally as supporting evidence for water identified in the image mosaics. Since the Landcover water layer was derived mostly from Landsat 5 data collected a decade earlier than the Shuttle mission and the map sources had similar currency problems, there were significant seasonal and temporal differences between the depiction of water in the ancillary sources and the actual extent of water bodies in February 2000 in many instances. In rare cases, where the SRTM image mosaics were missing or unusable, Landcover was used to delineate the water in the SRTM cells. The DTED&#174 header records for those cells are documented accordingly.

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    Content information
    Included with dataset
  • false

  • Feature types
  • wsbd

  • Feature catalogue citation
    Title
  • unknown

  • Date
    Date
  • 0001-01-01

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    Application schema information
    Schema ASCII
  • <?xml version = '1.0' encoding = 'ISO-8859-1'?> <eainfo> <detailed> <enttyp> <enttypl>wsbd</enttypl> <enttypd></enttypd> <enttypds></enttypds> </enttyp> <attr> <attrlabl>FID</attrlabl> <attrdef>Internal feature number.</attrdef> <attrdefs>Esri</attrdefs> <atttype></atttype> <attprecision></attprecision> <attlength></attlength> <attnullsallowed>false</attnullsallowed> <attisprimarykey>false</attisprimarykey> <attisunique>false</attisunique> <attisindex>false</attisindex> <attrdomv> <codesetd> <codesetn></codesetn> <codesets></codesets> </codesetd> </attrdomv> <attrdomv> </attrdomv> <attrdomv> <rdom> <rdommin></rdommin> <rdommax></rdommax> <attrunit></attrunit> <attrmres></attrmres> </rdom> </attrdomv> <attrdomv> <udom>Sequential unique whole numbers that are automatically generated.</udom> </attrdomv> <attrvai> <attrva></attrva> <attrvae></attrvae> </attrvai> <attrmfrq></attrmfrq> </attr> <attr> <attrlabl>Shape</attrlabl> <attrdef>Feature geometry.</attrdef> <attrdefs>Esri</attrdefs> <atttype></atttype> <attprecision></attprecision> <attlength></attlength> <attnullsallowed>false</attnullsallowed> <attisprimarykey>false</attisprimarykey> <attisunique>false</attisunique> <attisindex>false</attisindex> <attrdomv> <codesetd> <codesetn></codesetn> <codesets></codesets> </codesetd> </attrdomv> <attrdomv> </attrdomv> <attrdomv> <rdom> <rdommin></rdommin> <rdommax></rdommax> <attrunit></attrunit> <attrmres></attrmres> </rdom> </attrdomv> <attrdomv> <udom>Coordinates defining the features.</udom> </attrdomv> <attrvai> <attrva></attrva> <attrvae></attrvae> </attrvai> <attrmfrq></attrmfrq> </attr> <attr> <attrlabl>FACC_code</attrlabl> <attrdef></attrdef> <attrdefs></attrdefs> <atttype></atttype> <attprecision></attprecision> <attlength></attlength> <attnullsallowed>false</attnullsallowed> <attisprimarykey>false</attisprimarykey> <attisunique>false</attisunique> <attisindex>false</attisindex> <attrdomv> <codesetd> <codesetn></codesetn> <codesets></codesets> </codesetd> </attrdomv> <attrdomv> </attrdomv> <attrdomv> <rdom> <rdommin></rdommin> <rdommax></rdommax> <attrunit></attrunit> <attrmres></attrmres> </rdom> </attrdomv> <attrdomv> <udom></udom> </attrdomv> <attrvai> <attrva></attrva> <attrvae></attrvae> </attrvai> <attrmfrq></attrmfrq> </attr> <attr> <attrlabl>Cell</attrlabl> <attrdef></attrdef> <attrdefs></attrdefs> <atttype></atttype> <attprecision></attprecision> <attlength></attlength> <attnullsallowed>false</attnullsallowed> <attisprimarykey>false</attisprimarykey> <attisunique>false</attisunique> <attisindex>false</attisindex> <attrdomv> <codesetd> <codesetn></codesetn> <codesets></codesets> </codesetd> </attrdomv> <attrdomv> </attrdomv> <attrdomv> <rdom> <rdommin></rdommin> <rdommax></rdommax> <attrunit></attrunit> <attrmres></attrmres> </rdom> </attrdomv> <attrdomv> <udom></udom> </attrdomv> <attrvai> <attrva></attrva> <attrvae></attrvae> </attrvai> <attrmfrq></attrmfrq> </attr> <attr> <attrlabl>WB</attrlabl> <attrdef></attrdef> <attrdefs></attrdefs> <atttype></atttype> <attprecision></attprecision> <attlength></attlength> <attnullsallowed>false</attnullsallowed> <attisprimarykey>false</attisprimarykey> <attisunique>false</attisunique> <attisindex>false</attisindex> <attrdomv> <codesetd> <codesetn></codesetn> <codesets></codesets> </codesetd> </attrdomv> <attrdomv> </attrdomv> <attrdomv> <rdom> <rdommin></rdommin> <rdommax></rdommax> <attrunit></attrunit> <attrmres></attrmres> </rdom> </attrdomv> <attrdomv> <udom></udom> </attrdomv> <attrvai> <attrva></attrva> <attrvae></attrvae> </attrvai> <attrmfrq></attrmfrq> </attr> </detailed> </eainfo>

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