G-WIS Environmental Sensitivity Index datasets, Geographic NAD83 (335 Megabytes)

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Frequently-anticipated questions:

What does this data set describe?

    G-WIS Environmental Sensitivity Index datasets, Geographic NAD83 (335 Megabytes)
    These data characterize coastal environments and wildlife by their sensitivity to spilled oil. The G-WIS data include shoreline habitats, sensitive biological resources, and human-use resources. Shapefiles and relational data tables representing the environmental sensitivity index (ESI), biology, and socio-economic components of the Louisiana Gulf-Wide Information System (G-WIS). Note that these data are delivered in Geographic coordinates (NAD83). The conversion of the spatial data layers from the original UTM working projection to the Geographic coordinate system resulted in a small decrease in precision, and necessitated small changes in some coverages and relational data tables to maintain topological and data integrity. The combined set of shapefiles, tables, metadata and additional information files is approximately 335 megabytes.
    These metadata describe shapefiles that are related to the ESI data. The metadata for this data set are encapsulated into several documents and graphics files. The metadata are not complete if you did not receive the following files along the dataset
    gwis-esi.text - this metadata in ASCII text form
    gwis-esi.html - this metadata in HTML form
    gwis-esi_faq.html - this metadata presented as Questions
    and Answers
    gwis-esi.xml - this metadata in XML form
    gwis-esi.sgml - this metadata in SGML form
    gwis-esi1.gif - thumbnail graphic of data set

  1. How should this data set be cited?

    U.S. Minerals Management Service, 20020731, G-WIS Environmental Sensitivity Index datasets, Geographic NAD83 (335 Megabytes): U.S. Minerals Management Service, New Orleans, Louisiana.

    This is part of the following larger work.

    U.S. Minerals Management Service, 20020731, Environmental Sencitivity Index datasets: Gulf Wide Information System (G-WIS) Louisiana, U.S. Minerals Management Service, New Orleans, Louisiana.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -94
    East_Bounding_Coordinate: -88
    North_Bounding_Coordinate: 30
    South_Bounding_Coordinate: 28.5

  3. What does it look like?

    <URL:gwis-esi1.gif> (GIF)
    thumbnail graphic of data set

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

    Beginning_Date: 23-Jan-1972
    Beginning_Time: Unknown
    Ending_Date: 31-Jul-2002
    Ending_Time: Unknown
    Shoreline types were mapped using photointerpretation, helicopter overflights, and ground surveys conducted.

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

    Geospatial_Data_Presentation_Form: map

  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):

      • complete chain

    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 0.00001. Longitudes are given to the nearest 0.00001. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.257.

  7. How does the data set describe geographic features?

    none (Source: U.S. Minerals Management Service)

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?

    This project was supported by the Minerals Management Service (MMS) 1201 Elmwood Park Blvd., MS-5220, New Orleans, LA 70123-2394. Norman Froomer with MMS coordinated the larger G-WIS project and was particularly supportive during the Louisiana portion of the project. This project was coordinated by Louisiana State University (LSU), Center for Coastal, Energy and Environmental Resources (CCEER) and the Department of Geography and Anthropology, 302 Howe-Russell, Baton Rouge, LA 70803. DeWitt Braud, Dina Sa, Hampton Peele, and Lynda Wayne were key contributors to the project. The majority of natural resources data used to develop the larger LA G-WIS data set were provided by the LDWF. Jim Hanifen coordinated the LDWF effort. The following LDWF personnel (listed alphabetically) were major Jan Bowman, Heather Warner Finley, Robert Helm, Noel Kinler, Gary Lester, Greg Linscombe, Mike Olinde, Gary Tilyou, and Bill Vermillion. At Research Planning, Inc. (RPI), Scott Zengel was the Project Manager. Colin Plank and Miles Hayes performed the shoreline classification. Zach Nixon was the GIS Coordinator, Jon Whitlock, and Jennifer Rainman performed data processing, and Kristi Suggs prepared the final metadata. Joanne Halls and William Holton contributed to the conceptual design of the project and participated in the LA G-WIS pilot project, which preceded this final data set.

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

    U.S. Minerals Management Service
    1201 Elmwood Park Boulevard
    New Orleans, LA 70123-2394

    (504) 736-2782 (voice)

    Hours_of_Service: 0800-1600 CST

Why was the data set created?

The G-WIS data are created to support environmental assessments associated with oil and gas exploration, production, and transportation activities in the Gulf of Mexico. The G-WIS data structure is closely related to the Environmental Sensitivity Index (ESI) data structure used by NOAA, USCG, and other agencies for oil spill planning and response purposes. These data therefore support the requirements of the Clean Water Act, with amendments by the Oil Pollution Act of 1990, in the development of response plans for immediate and effective protection of sensitive resources. G-WIS and ESI data are also appropriate for other natural resource management and environmental assessment purposes.

How was the data set created?

  1. From what previous works were the data drawn?

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

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

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

How can someone get a copy of the data set?

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

Access_Constraints: none
The G-WIS database was developed to provide summary information on sensitive natural and human-use resources for the purposes of oil spill planning, environmental assessment, and natural resource management. Although the G-WIS database should be a valuable planning and resource management tool, it should not be used to the exclusion of other pertinent data or information held by state or federal agencies or other organizations. Likewise, information contained in the database cannot be used in place of consultations with environmental, natural resource, and cultural resource agencies, or in place of field surveys. Also, this database and related map products should not be used for navigation. Recognize that the information contained in the G-WIS database represents known concentration areas or occurrences of natural, cultural, and human-use resources, but does not necessarily represent the full distribution or range of each species or resource. This is particularly important to recognize when considering potential impacts to protected resources, such as endangered species, wetlands, etc. For more information or guidance on proper and improper uses of these data, please contact the Louisiana Department of Wildlife and Fisheries (LDWF) and Research Planning, Inc. Acknowledgement of the originators, publishers, contributors, and sources listed in this document would be appreciated in products derived from or utilizing these data.

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

    U.S. Minerals Management Service
    1201 Elmwood Park Boulevard
    New Orleans, LA 70123-2394

    (504) 736-2782 (voice)

    Hours_of_Service: 0800-1600 CST
  2. What's the catalog number I need to order this data set?

    Louisiana G-WIS - ESI

  3. What legal disclaimers am I supposed to read?

    The data herein, including but not limited to geographic data, tabular data, analytical data, electronic data structures or files, are provided ""as is"" without warranty of any kind, either expressed or implied, or statutory, including, but not limited to, the implied warranties or merchantability and fitness for a particular purpose. The entire risk as to the quality and performance of the data is assumed by the user. No guarantee of accuracy is granted, nor is any responsibility for reliance thereon assumed. In no event shall the U.S. Minerals Management (MMS), Louisiana Geographic Information Center (LAGIC), nor the Louisiana Oil Spill Coordinator's Office (LOSCO) be liable for direct, indirect, incidental, consequential or special damages of any kind, including, but not limited to, loss of anticipated profits or benefits arising out of use of or reliance on the data. MMS, LAGIC and LOSCO do not accept liability for any damages or misrepresentation caused by inaccuracies in the data or as a result of changes to the data caused by system transfers or other transformations or conversions, nor is there responsibility assumed to maintain the data in any manner or form. These data have been developed from the best available sources. Although efforts have been made to ensure that the data are accurate and reliable, errors and variable conditions originating from physical sources used to develop the data may be reflected in the data supplied. Users must be aware of these conditions and bear responsibility for the appropriate use of the information with respect to possible errors, scale, resolution, rectification, positional accuracy, development methodology, time period, environmental and climatic conditions and other circumstances specific to these data. The user is responsible for understanding the accuracy limitations of the data provided herein. The burden for determining fitness for use lies entirely with the user. The user should refer to the accompanying metadata notes for a description of the data and data development procedures. Although these data have been processed successfully on computers at the LOSCO, no guarantee, expressed or implied, is made by MMS, LAGIC nor LOSCO regarding the use of these data on any other system, nor does the act of distribution constitute or imply any such warranty. Distribution of these data is intended for information purposes and should not be considered authoritative for navigational, engineering, legal and other site-specific uses.

  4. How can I download or order the data?

Who wrote the metadata?

Last modified: 31-Jul-2002
Last Reviewed: 23-Oct-2002
To be reviewed: 23-Oct-2002

Metadata author:
Louisiana Geographic Information Center
c/o Dina Sa
Research Associate 4
E313 Howe-Russell
Louisiana State University
Baton Rouge, LA 70803

(225) 578-8358 (voice)

Hours_of_Service: 0800-1630 CST
Contact_Instructions: Electronic messages preferred
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Generated by mp version 2.8.0 on Thu Apr 10 09:54:01 2003