World Lakes

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Frequently-anticipated questions:


What does this data set describe?

Title: World Lakes
Abstract:
World Lakes represents the major lakes and inland seas within the world.
Supplemental_Information: Largest scale when displaying the data: 1:10,000,000.
  1. How should this data set be cited?

    Environmental Systems Research , Inc. (ESRI), 20020401, World Lakes: ESRI Data & Maps 2002, Environmental Systems Research Institute, Inc. (ESRI), Redlands, California, USA.

    Other_Citation_Details: Location: ESRI Data & Maps 2002 (CD 1) \world

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -125.123322
    East_Bounding_Coordinate: 109.964996
    North_Bounding_Coordinate: 67.046936
    South_Bounding_Coordinate: -16.600559

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 01-Aug-1992
    Currentness_Reference: publication date

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: vector digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • G-polygon (38)

    2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is D_WGS_1984.
      The ellipsoid used is WGS_1984.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257224.

  7. How does the data set describe geographic features?

    lakes
    The polygons represent the major natural inland bodies of water within the world. (Source: ESRI)

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    AREA
    The lake or inland sea area in square miles using an equal area projection. (Source: ESRI)

    Calculated areas for the features.

    NAME
    The lake or inland sea name. (Source: Rand McNally New International Atlas; The Times Atlas of the World; Digital Chart of the World)

    Names for the features.

    SURF_ELEV
    The surface elevation in feet of the lake or inland sea. (Source: Rand McNally New International Atlas; The Times Atlas of the World; Digital Chart of the World)

    ValueDefinition
    -9999Attribute values of -9999 are null values (data not available).

    DEPTH
    The approximate maximum depth in feet of the lake or inland sea. (Source: Rand McNally New International Atlas; The Times Atlas of the World; Digital Chart of the World)

    ValueDefinition
    -999Attribute values of -999 are null values (data not available).


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?

    Environmental Systems Research Institute, Inc. (ESRI)
    c/o Data Team
    380 New York Street
    Redlands, California 92373-8100
    USA

    909-793-2853 (voice)
    909-793-5953 (FAX)
    info@esri.com

    Hours_of_Service: 8:00 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 6:00 p.m. Pacific time, Monday through Friday, by dialing 909-793-3774; 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.


Why was the data set created?

World Lakes provides a base map layer of major lakes and inland seas of the world.


How was the data set created?

  1. From what previous works were the data drawn?

    ArcWorld 1:3M, 1:25M (source 1 of 5)
    Environmental Systems Research , Inc. (ESRI), 19920801, ArcWorld 1:3M, ArcWorld 1:25M:, Environmental Systems Research Institute, Inc. (ESRI), Redlands, California, USA.

    Type_of_Source_Media: CD–ROM
    Source_Scale_Denominator: 3000000, 25000000
    Source_Contribution: Attribute and geospatial data

    Rand McNally Int. (source 2 of 5)
    Rand McNally & Company, 1991, Rand McNally New International Atlas: Rand McNally New International Atlas 2nd printing, revised, Rand McNally & Company, Chicago, Illinois, USA.

    Type_of_Source_Media: paper
    Source_Contribution: Attribute data

    Times Atlas (source 3 of 5)
    Bartholemew and Times Books, 1990, The Times Atlas of the World: The Times Atlas of the World 8th comprehensive edition, Bartholemew and Times Books, Edinburgh, Scotland.

    Type_of_Source_Media: paper
    Source_Contribution: Attribute data

    DCW (source 4 of 5)
    Environmental Systems Research , Inc. (ESRI), and Defense Mapping Agency, presently known as National Imagery and M, 1992, Digital Chart of the World: Environmental Systems Research Institute, Inc. (ESRI), Redlands, California, USA.

    Type_of_Source_Media: CD–ROM
    Source_Contribution: Attribute data

    NASA Visible Earth (source 5 of 5)
    NASA Visible Earth Program, 20010614, Sea of Aral: NASA, online.

    Online Links:

    Other_Citation_Details:
    Credit: Jacques Descloitres, MODIS Land Rapid Response Team Satellite: Terra Sensor: MODIS Image Date: 06-14-2001 VE Record ID:8936 2400w x 3200h true color JPEG
    Type_of_Source_Media: online
    Source_Contribution: Geospatial data

  2. How were the data generated, processed, and modified?

    Date: 30-Jan-2002 (process 1 of 1)
    The following steps were performed by ESRI for Data & Maps 2002: Downloaded Sea of Aral image from <http://visibleearth.nasa.gov/data/ev89/ev8936_AralSea.A2001165.0710.250m.jpg>. Locally registered the image to the vector data using ArcView® Image Analysis creating shapefiles of the current water area. These shapefiles were used as the basis for updating the current extent of the sea and adding a new feature. Copied ArcGIS™ layer file (.lyr), ArcView legend file (.avl), and projection file (.prj) and created spatial indices.

    The following steps were performed by ESRI: Extracted the features from ArcWorld 1:25M. Added and replaced features from ArcWorld 1:3M. Generalized to match detail of the Cntry00.shp. Added attribute values from the Rand McNally New International Atlas, the Times Atlas of the World, and the Digital Chart of the World. Updated Area attribute. Removed unneeded attributes. Renamed an attribute. Created ArcGIS™ layer file (.lyr). Created ArcView legend file (.avl). Created projection file (.prj). Ran ArcView Avenue request ExportClean, and created spatial indices.

    Data sources used in this process:

    • ArcWorld 1:3M, ArcWorld 1:25M
    • Rand McNally Int.
    • Times Atlas
    • DCW
    • NASA Visible Earth

  3. What similar or related data should the user be aware of?


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

  2. How accurate are the geographic locations?

    The geospatial part of this data set was extracted from the ArcWorld 1:25M and 1:3M databases and then generalized (tolerance unknown). The positional accuracy is unknown.

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    After processing, the data set is checked for drawing display and number of records and file sizes compared with source materials.

  5. How consistent are the relationships among the observations, including topology?

    No duplicate features are present.


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

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 CD–ROMs for use with ESRI® 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 CD–ROMs. 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). Geodata is redistributable without a Value-Added Software Application (i.e., adding the sample data to an existing, [non]commercial data set for redistribution) 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 the ESRI Data & Maps CD–ROMs.

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.

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.

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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.

  1. Who distributes the data set? (Distributor 1 of 1)

    Environmental Systems Research Institute, Inc. (ESRI); ESRI International Distributors
    380 New York Street
    Redlands, California 92373-8100
    USA

    800-447-9778 (voice)

    Contact_Instructions:
    In the United States, contact the ESRI Telesales 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>.

  2. What's the catalog number I need to order this data set?

    Offline Data

  3. What legal disclaimers am I supposed to read?

    See use constraints.

  4. How can I download or order the data?

  5. What hardware or software do I need in order to use the data set?

    To use this data requires software that supports ArcView® GIS shapefiles.


Who wrote the metadata?

Dates:
Last modified: 13-Feb-2002
Metadata author:
Environmental Systems Research Institute, Inc. (ESRI)
c/o Data Team
380 New York Street
Redlands, California 92373-8100
USA

909-793-2853 (voice)
909-793-5953 (FAX)
info@esri.com

Hours_of_Service: 8:00 a.m.–5:30 p.m. Pacific time, Monday–Friday
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:


Generated by mp version 2.8.6 on Tue Jan 23 14:15:32 2007