SRTM Water Bodies

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey Center for Earth Resource Observation and Science (EROS)
Originator: National Aeronautics and Space Administration (NASA)
Originator: National Geospatial-Intelligence Agency (NGA)
Originator: ESRI
Publication_Date: 20061001
Title:
SRTM Water Bodies
Edition: 2006
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: ESRIr Data & Maps
Issue_Identification: 2006 World, Europe, United States, Canada, and Mexico
Publication_Information:
Publication_Place: Redlands, California, USA
Publisher: ESRI
Other_Citation_Details:
Location: Elevation and Image Data - World DVD \srtm_void_filled\water
Description:
Abstract:
SRTM Water Bodies (South West, one of six data sets) represents the lakes, rivers, and ocean areas within the SRTM coverage area (between 60 degrees North and 56 degrees South latitude) of the world. All SRTM elevation values within lakes and ocean areas were set to be a constant elevation for that feature. Elevation values within river areas were set to insure the proper flow direction. The primary source for these water features was a Landsat 5-based landcover water layer supplemented with medium-scale maps and charts.
Purpose:
SRTM Water Bodies provides the geographic extent of where the original SRTM elevation values were altered to more accurately represent water surface areas within the data set. These data can also be used for cartographic display.
Supplemental_Information:
Largest scale when displaying the data: 1:100,000.
Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 200002
Single_Date/Time:
Calendar_Date: 1996
Currentness_Reference:
ground condition: 200002; publication date: 1996
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Annually
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -179.999583
East_Bounding_Coordinate: -27.999582
North_Bounding_Coordinate: 1.999584
South_Bounding_Coordinate: -56.000417
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: polygon
Theme_Keyword: water
Theme_Keyword: hydrography
Theme_Keyword: rivers
Theme_Keyword: lakes
Theme_Keyword: oceans
Theme_Keyword: inlandWaters
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Global
Place_Keyword: World
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 2000
Temporal_Keyword: 1996
Access_Constraints: Access granted to Licensee only.
Use_Constraints:
The data are provided by multiple, third party data vendors under license to ESRI for inclusion on ESRI Data & Maps for use with ESRIr software.  Each data vendor has its own data licensing policies and may grant varying redistribution rights to end users. Please consult the redistribution rights below for this data set provided on ESRI Data & Maps. As used herein, "Geodata" shall mean any digital data set consisting of geographic data coordinates and associated attributes.

The redistribution rights for this data set: Redistribution rights are granted by the data vendor for hard-copy renditions or static, electronic map images (e.g. .gif, .jpeg, etc.) that are plotted, printed, or publicly displayed with proper metadata and source/copyright attribution to the respective data vendor(s).  Geodata is redistributable with a Value-Added Software Application developed by ESRI Business Partners on a royalty-free basis with proper metadata and source/copyright attribution to the respective data vendor(s).

The terms and conditions below apply to all the data sets provided on ESRI Data & Maps.

Proprietary Rights and Copyright: Licensee acknowledges that the Data and Related Materials contain proprietary and confidential property of ESRI and its licensor(s). The Data and Related Materials are owned by ESRI and its licensor(s) and are protected by United States copyright laws and applicable international copyright treaties and/or conventions.

Limited Warranty and Disclaimer: ESRI warrants that the media upon which the Data and Related Materials are provided will be free from defects in materials and workmanship under normal use and service for a period of ninety (90) days from the date of receipt.

THE DATA AND RELATED MATERIALS ARE EXCLUDED FROM THE LIMITED WARRANTY, AND THE LICENSEE EXPRESSLY ACKNOWLEDGES THAT THE DATA CONTAINS SOME NONCONFORMITIES, DEFECTS, OR ERRORS. ESRI DOES NOT WARRANT THAT THE DATA WILL MEET LICENSEE'S NEEDS OR EXPECTATIONS; THAT THE USE OF THE DATA WILL BE UNINTERRUPTED; OR THAT ALL NONCONFORMITIES, DEFECTS, OR ERRORS CAN OR WILL BE CORRECTED. ESRI IS NOT INVITING RELIANCE ON THIS DATA, AND THE LICENSEE SHOULD ALWAYS VERIFY ACTUAL DATA.

EXCEPT FOR THE LIMITED WARRANTY SET FORTH ABOVE, THE DATA AND RELATED MATERIALS CONTAINED THEREIN ARE PROVIDED "AS-IS," WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

HIGH RISK ACTIVITIES: 
(A) THE DATA AND RELATED MATERIALS ARE NOT FAULT-TOLERANT AND ARE NOT DESIGNED, MANUFACTURED, OR INTENDED FOR USE OR RESALE FOR INSURANCE UNDERWRITING OR WITH CRITICAL HEALTH AND SAFETY OR ONLINE CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS THAT REQUIRE FAIL-SAFE PERFORMANCE, INCLUDING, BUT NOT LIMITED TO THE OPERATION OF NUCLEAR FACILITIES, NAVIGATION OR GUIDANCE (I.E., AIRCRAFT, NAUTICAL VEHICLE, ETC.), OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, EMERGENCY RESPONSE, TERRORISM PREVENTION OR RESPONSE, LIFE SUPPORT, OR WEAPONS SYSTEMS ("HIGH RISK ACTIVITIES"). ESRI SPECIFICALLY DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.

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Exclusive Remedy and Limitation of Liability: The entire liability of ESRI or its licensor(s) and Licensee's exclusive remedy shall be to terminate the Agreement upon Licensee returning the Data and Related Materials to ESRI with a copy of Licensee's invoice/receipt and ESRI returning the license fees paid to Licensee.

IN NO EVENT SHALL ESRI AND/OR ITS LICENSOR(S) BE LIABLE FOR COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOST PROFITS, LOST SALES, OR BUSINESS EXPENDITURES, INVESTMENTS, OR COMMITMENTS IN CONNECTION WITH ANY BUSINESS; LOSS OF ANY GOODWILL; OR FOR ANY INDIRECT, SPECIAL, INCIDENTAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT OR USE OF THE DATA AND RELATED MATERIALS, HOWEVER CAUSED, ON ANY THEORY OF LIABILITY, AND WHETHER OR NOT ESRI OR ITS LICENSOR(S) HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. THESE LIMITATIONS SHALL APPLY NOTWITHSTANDING ANY FAILURE OF ESSENTIAL PURPOSE OF ANY EXCLUSIVE REMEDY.

Third Party Beneficiary: ESRI's licensor(s) has (have) authorized ESRI to (sub)distribute and (sub)license its (their) data as incorporated into the Data and Related Materials. As an intended third party beneficiary to this Agreement, the ESRI licensor(s) is (are) entitled to directly enforce, in its own name, the rights and obligations undertaken by the Licensee and to seek all legal and equitable remedies as are afforded to ESRI.

In the event that the data vendor(s) has (have) granted the end user permission to redistribute the Geodata, please use proper proprietary or copyright attribution for the various data vendor(s), and provide the associated metadata file(s) with the Geodata. In compliance with FGDC metadata standards, ESRI has attempted to practice proper metadata methodologies by providing any data source information, descriptions, and file names to assist in this effort.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: ESRI
Contact_Person: Data Team
Contact_Address:
Address_Type: mailing and physical address
Address:
380 New York Street
City: Redlands
State_or_Province: California
Postal_Code: 92373-8100
Country: USA
Contact_Voice_Telephone: 909-793-2853
Contact_Facsimile_Telephone: 909-793-5953
Contact_Electronic_Mail_Address: info@esri.com
Hours_of_Service: 7:00 a.m.-5:30 p.m. Pacific time, Monday-Friday
Contact Instructions:
In the United States-
Please direct all inquiries regarding software/data pricing and consulting services to your local ESRI Regional Office.  For support, you may contact Technical Support by telephone (voice) between 6:00 a.m. and 5:00 p.m. Pacific time, Monday through Friday, by dialing 888-377-4575; facsimile (fax) available at 909-792-0960; electronic mail (e-mail) support@esri.com; or visit http://support.esri.com; ESRI holidays excluded. 

Outside the United States-
Please direct all inquiries regarding software/data pricing, sales, support, and consulting services to your local ESRI International Distributor.  This information can be found at http://gis.esri.com/intldist/contactint.cfm.  

For other questions or comments, you may contact ESRI headquarters by e-mail, telephone, or fax or write to us.
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.0.1279
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Data_Quality_Information:
Logical_Consistency_Report:
The shapefile is converted to SDC (Smart Data Compression) format using either ESRI SDC Data Development Kit Professional 2 (DDKP2) or tools in ArcGIS.  The SDC data set is then loaded into ArcSDEr to verify and validate the geometry.
Completeness_Report:
After processing, the data set is checked for drawing display and number of records and file sizes compared with source materials.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The absolute horizontal accuracy is equivalent to SRTM DTED 2 (20 meter circular error, 90% confidence).
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey Center for Earth Resource Observation and Science (EROS)
Originator: National Aeronautics and Space Administration (NASA)
Originator: National Geospatial-Intelligence Agency (NGA)
Title:
Shuttle Radar Topography Mission Water Body Dataset, Shuttle Radar Topography Mission DTEDr Level 1 (3-arc second) Data
Geospatial_Data_Presentation_Form: vector digital data, raster digital data
Publication_Information:
Publication_Place: Sioux Falls, South Dakota, USA
Publisher: U.S. Geological Survey Center for Earth Resource Observation and Science (EROS)
Other_Citation_Details:
SRTM is a cooperative project between NASA and NGA. Acknowledgement: Data available from USGS/EROS, Sioux Falls, South Dakota. Questions concerning the use or redistribution of USGS/EROS data should be directed to: USGS/EROS Customer Services Mundt Federal Building, Sioux Falls, SD 57198; Toll Free: 800-252-4547; Telephone: 605-594-6151; Facsimile: 605-594-6589; Email: custserv@usgs.gov
Online_Linkage: http://edc.usgs.gov/products/elevation/swbd.html
Online_Linkage: http://edc.usgs.gov/products/elevation/swbdguide.doc
Online_Linkage: http://edc.usgs.gov/products/elevation/swbdedit.doc
Online_Linkage: http://edcsns17.cr.usgs.gov/srtmdted/
Type_of_Source_Media: DVD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 200002
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
USGS/EROS SRTM Water and DTED
Source_Contribution:
Attribute and geospatial data
Source_Information:
Source_Citation:
Citation_Information:
Originator: ESRI
Publication_Date: 20061001
Title:
World Latitude and Longitude Grids
Edition: 2006
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: ESRIr Data & Maps
Issue_Identification: 2006 World, Europe, United States, Canada, and Mexico
Publication_Information:
Publication_Place: Redlands, California, USA
Publisher: ESRI
Online_Linkage: http://www.esri.com/
Type_of_Source_Media: DVD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1996
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
ESRI Data & Maps 2006
Source_Contribution:
Attribute and geospatial data
Process_Step:
Process_Description:
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 (DTEDr 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.

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  by 1  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 header records for those cells are documented accordingly.     

Two documents are provided to describe the details of the data editing and the SRTM Water Body Data files:

a.	SRTM Water Body Data Product Specific Guidance (version 2.0, Mar. 12, 2003). (Online linkage: http://edc.usgs.gov/products/elevation/swbdguide.doc)

b.	SRTM Data Editing Rules (version 2.0, March 12, 2003). (Online linkage: http://edc.usgs.gov/products/elevation/swbdedit.doc)
Source_Produced_Citation_Abbreviation:
USGS/EROS SRTM Water and DTED
Process_Step:
Process_Description:
The following steps were performed by ESRI: Ordered and received the Shuttle Radar Topography Mission Water Body Dataset on one DVD (12,229 zipped shapefile datasets) from the U.S. Geological Survey Center for Earth Resource Observation and Science (EROS). Uncompressed all zipped shapefile datasets using the WinZipr 10.0 command line add-on. Created a projection file (WGS 1984) for each water body dataset. Appended all water body shapefiles into regional shapefiles. Each of the regional shapefiles contains the water body data that corresponds to the geographic area covered by the applicable regional SRTM elevation raster dataset. Loaded all appended water body shapefiles into ArcSDE 9.1 feature classes. All features that did not load because of geometry problems were corrected and reloaded. Exported each of the ArcSDE 9.1 feature classes into shapefiles. Clipped each of the regional water body shapefiles to the extent of the applicable regional SRTM elevation raster dataset.

Created a feature class containing polygons for those areas in the ocean where there is no SRTM coverage (termed non-SRTM coverage dataset). In order to create smaller ocean polygons, intersected this feature class with the 2006 World Latitude and Longitude Grids (prior to intersecting, converted the 2006 World Latitude and Longitude Grids dataset from line to polygon). The non-SRTM coverage feature class was then clipped into six regional datasets, which were then densified to approximately one degree.

Created ArcSDE 9.1 feature classes to store the regional water body data. Added the following attributes to each regional ArcSDE feature class: FACC_CODE, FACC_DESC, ELEV, and COMMENTS. Loaded the following data into the regional ArcSDE 9.1 feature classes: SRTM regional water body datasets, regional non-SRTM coverage datasets, and the regional datasets containing the polygons that represent the voids in the elevation data that are located in the water/land "interface" (i.e. a void that spatially spanned across water and land) where the elevation pixels were set to a constant value (termed "Boat Ramp" features). Prior to loading these features into ArcSDE, each feature had at least an initial FACC_CODE attribute populated and in the case of the "boat ramp" features the ELEV attribute was populated with the elevation value used to set the elevation raster pixels to a constant value. Based on the initial attributes of the water features and the source of the data, calculated the attributes to their final values; atypical coding situations and code changes are described in the COMMENTS attribute. Converted the six ArcSDE regional SRTM water body feature classes to Smart Data Compression (SDC) format. Created ArcGISr layer files (.lyr), projection files (.prj), and spatial indices.
Source_Used_Citation_Abbreviation:
USGS/EROS SRTM Water and DTED
Source_Used_Citation_Abbreviation:
ESRI Data & Maps 2006
Process_Date: 20060802
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 54837
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.000000
Longitude_Resolution: 0.000000
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: srtm_s_water_w
Entity_Type_Definition:
The polygons represent the lakes, rivers, and ocean areas within the SRTM coverage area (between 60 degrees North and 56 degrees South latitude) of the world.
Entity_Type_Definition_Source:
ESRI
Attribute:
Attribute_Label: ObjectID
Attribute_Definition:
Internal feature number.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: FACC_CODE
Attribute_Definition:
The Feature and Attribute Coding Catalog code.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: BA040
Enumerated_Domain_Value_Definition:
Water (Except Inland) - ocean areas.
Enumerated_Domain_Value_Definition_Source:
ESRI
Enumerated_Domain:
Enumerated_Domain_Value: BH080
Enumerated_Domain_Value_Definition:
Inland Water - lake/pond.
Enumerated_Domain_Value_Definition_Source:
ESRI
Enumerated_Domain:
Enumerated_Domain_Value: BH140
Enumerated_Domain_Value_Definition:
Inland Water - river/stream.
Enumerated_Domain_Value_Definition_Source:
ESRI
Attribute:
Attribute_Label: FACC_DESC
Attribute_Definition:
The Feature and Attribute Coding Catalog code description.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: The Digital Geographic Information Exchange Standard (DIGEST) - Part 4 FEATURE and ATTRIBUTE CODING CATALOGUE (FACC)
Codeset_Source: Digital Geographic Information Working Group (DGIWG)
Attribute:
Attribute_Label: ELEV
Attribute_Definition:
The elevation value in meters used to populate SRTM elevation voids believed to be located within water areas.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Calculated elevations for the features.
Attribute:
Attribute_Label: COMMENTS
Attribute_Definition:
The description of atypical coding situations and code changes.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: "Non SRTM data capture area", "SRTM void in inland water", "SRTM void in water", "SRTM void in water;elv not set", "Was BH140", "Was BH080"
Enumerated_Domain_Value_Definition:
The list of comments.
Enumerated_Domain_Value_Definition_Source:
ESRI
Attribute:
Attribute_Label: Shape
Attribute_Definition:
Feature geometry.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Coordinates defining the features.
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: ESRI; ESRI International Distributors
Contact_Address:
Address_Type: mailing and physical address
Address:
380 New York Street
City: Redlands
State_or_Province: California
Postal_Code: 92373-8100
Country: USA
Contact_Voice_Telephone: 800-447-9778
Contact Instructions:
In the United States, contact the ESRI Telebusiness staff at 800-447-9778 for more information about our software and data.

Outside the United States, please direct all inquiries to your local ESRI International Distributor.  This information can be found at http://gis.esri.com/intldist/contactint.cfm.
Resource_Description: Offline Data
Distribution_Liability:
See use constraints.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: SDC
Format_Specification:
The SDC file contains the geospatial and attribute data. The SDI file contains the spatial index. The PRJ file contains the coordinate system information (optional). The XML file (*.sdc.xml) contains the metadata describing the data set (optional).
File_Decompression_Technique: ArcGISr software
Transfer_Size: 29.995
Digital_Transfer_Option:
Offline_Option:
Offline_Media: DVD-ROM
Recording_Capacity:
Recording_Density: 7.95
Recording_Density_Units: GB (gigabytes)
Recording_Format: UDF (Universal Disc Format)
Fees: Software purchase price
Ordering_Instructions:
ESRI Data & Maps is available only as part of ESRIr software.
Technical_Prerequisites:
To use this data requires software that supports SDC files.
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Metadata_Reference_Information:
Metadata_Date: 20060910
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: ESRI
Contact_Person: Data Team
Contact_Address:
Address_Type: mailing and physical address
Address:
380 New York Street
City: Redlands
State_or_Province: California
Postal_Code: 92373-8100
Country: USA
Contact_Voice_Telephone: 909-793-2853
Contact_Facsimile_Telephone: 909-793-5953
Contact_Electronic_Mail_Address: info@esri.com
Hours_of_Service: 7:00 a.m.-5:30 p.m. Pacific time, Monday-Friday
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile
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