GIS Metadata

BLM OR Fire History 1890 Polygon

Frequently-asked questions:

What does this data set describe?

BLM OR Fire History 1890 Polygon

FIRE1890_POLY: A series of four maps showing the state of forests in the northern coastal area of Oregon. They show the change in stand age over time due to fires. This dataset shows conditions in 1890.

Supplemental information:
WODDB (Western Oregon Digital Database), MOSS (Map Overlay Statistical System), ADS (Automated Digitizing System), BLM (Bureau of Land Management)

  1. How should this data set be cited?

    OR/WA BLM, unknown, BLM OR Fire History 1890 Polygon: OR BLM, Portland, OR.

  2. What geographic area does the data set cover?

    Bounding coordinates:
    West: -124.168770
    East: -122.843765
    North: 46.212284
    South: 43.645214

  3. What does it look like?

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

    Calendar date: unknown
    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?

      Indirect spatial reference:

      This is a Vector data set. It contains the following vector data types (SDTS terminology):
      • GT-polygon composed of chains (340)

    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 2e-008. Longitudes are given to the nearest 2e-008. Latitude and longitude values are specified in Decimal Degrees.

      The horizontal datum used is D North American 1983.
      The ellipsoid used is GRS 1980.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257222101.

  7. How does the data set describe geographic features?

    Fire History Polygons
    1890 Age class of forest in polygon. (Source: OR/WA BLM)

    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    Age class of forest in the polygon. (Source: OR/WA BLM)

    0 to 49 years condition
    50 to 99 years condition
    100 to 199 years condition
    200+ years condition
    Burned condition

    Entity and attribute overview:
    For full description of data see Abstract. Data Standard if one exists may be found here: https://www.blm.gov/or/gis/data.php
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Who produced the data set?

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

    • OR/WA BLM

  2. Who also contributed to the data set?

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

    Dale Guenther
    US Forest Service
    System Analyst
    333 Southwest First Avenue
    Portland, OR97204

    (503) 808-2188 (voice)
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Why was the data set created?

Resource Management Planning

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How was the data set created?

  1. Where did the data come from?

    FIREHISTORY 1850/1890/1920/1940 (source 1 of 1)

    OR/WA BLM, Fire history Maps: OR BLM, Portland, OR.

    Type of source media: hardcopyPaper
    Source scale denominator: 500000
    Source contribution:
    Polygons and Attributes

  2. What changes have been made?

    Date: unknown (change 1 of 3)
    The fire history map was digitized in ADS by BLM contractors. The ADS map was then translated into MOSS and plotted for QC against the original map.

    Date: unknown (change 2 of 3)
    MOSS map of the fire history was translated into ARC by use of the MOSSARC command. Then the theme was inserted into the Q100 library.

    Date: 19960325 (change 3 of 3)
    The Q100 Library was converted from Arc/Info ver. 6.1.2 to Arc/Info ver. 7.0.3.

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

  1. How well have the observations been checked?

    The attributes were checked against the original source for accuracy.

  2. How accurate are the geographic locations?


  3. How accurate are the heights or depths?

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

    This theme covers both public and private lands in the western portion of BLM Salem and Eugene Districts, and a small portion of the northern half of BLM Roseburg and Coos Bay Districts.

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

    The polygons have been checked for dangling lines and closure. This theme is built for polygon topology.

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How can someone get a copy of the data set?

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

Access constraints: PUBLIC DATA: None, these data are considered public domain.
Use constraints:
These data are provided by Bureau of Land Management (BLM) "as is" and may contain errors or omissions. The User assumes the entire risk associated with its use of these data and bears all responsibility in determining whether these data are fit for the User's intended use. The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived, and both scale and accuracy may vary across the data set. These data may not have the accuracy, resolution, completeness, timeliness, or other characteristics appropriate for applications that potential users of the data may contemplate. The User is encouraged to carefully consider the content of the metadata file associated with these data. These data are neither legal documents nor land surveys, and must not be used as such. Official records may be referenced at most BLM offices. Please report any errors in the data to the BLM office from which it was obtained. The BLM should be cited as the data source in any products derived from these data. Any Users wishing to modify the data should describe the types of modifications they have performed. The User should not misrepresent the data, nor imply that changes made were approved or endorsed by BLM. This data may be updated by the BLM without notification.

Distributor 1 of 1

  1. Who distributes the data set?

    Eric Hiebenthal
    Bureau of Land Management
    GIS Data Management Specialist
    P.O Box 2965
    Portland, OR97208

    503-808-6340 (voice)
    503-808-6419 (FAX)
    Contact Instructions:
    contact instructions

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

  3. What legal disclaimers am I supposed to read?

    The BLM assumes no responsibility for errors or omissions. No warranty is made by the BLM as to the accuracy, reliability, or completeness of these data for individual use or aggregate use with other data; nor shall the act of distribution to contractors, partners, or beyond, constitute any such warranty for individual or aggregate data use with other data. Although these data have been processed successfully on computers of BLM, no warranty, expressed or implied, is made by BLM regarding the use of these data on any other system, or for general or scientific purposes, nor does the fact of distribution constitute or imply any such warranty. In no event shall the BLM have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of the use or reliance on the geographic data or arising out of the delivery, installation, operation, or support by BLM.

  4. How can I download or order the data?

    • Cost to order the data: Contact distributor.

    • Special instructions:

      Data are only available through the Oregon/Washington State office of the Bureau of Land Management.

  5. Is there some other way to get the data?

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

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Who wrote the metadata?

Last modified: 20090805
Last reviewed: 20130521

Metadata author:
Roger Mills
Bureau of Land Management, Oregon State Office
GIS Specialist
P.O. Box 2965
Portland, OR97208

(503) 808-6340 (voice)
(503) 808-6419 (FAX)
Hours of Service: 8:00-4:00
Contact Instructions:

Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata(FGDC-STD-001-1998)

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