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Oregon / Washington

GIS Metadata

BLM OR Publication Northern Spotted Owl Sites 2013 Point

Frequently-asked questions:

What does this data set describe?

BLM OR Publication Northern Spotted Owl Sites 2013 Point

NSO_SITE_PUBLIC_POINT: This is the BLM publication dataset of Northern Spotted Owl nest locations and the land ownership status of those sites. See Supplemental Information for greater detail and a list of Owl Species abreviations used in this data.

Supplemental information:
The spotted owl Site data are coordinates that have been determined to be unique locations through evidence of continued use by owls. A Site is designated for any location of breeding spotted owls, the presence of young before dispersal, the repeated location of a pair during a single season or over several years, or some other strong indication of continued occupation. The repeated detection of a single owl during the same season or over several years usually does not warrant a Site designation. If the owl's center of activity/nest grove has moved sufficiently to change critical Site file information, a new Alternate is designated. An Alternate Site Center will normally result from the location of a new nest tree or newly fledged juveniles at a new location for a previously known pair. Some examples of a sufficient change are; location in a different 1/16 Section, location greater than ΒΌ mile from a previous Alternate, landowner change, different administrative designation, change in land classification such as critical habitat, etc. One exception to this is when barred owls occupy historic Sites or Alternates. The presence of barred owls may result in abandonment of a site center, documenting the new spotted owl use area is important in these instances. A new Alternate that is not based on a nest grove should have at least 2 years of known activity at that location without use of another Alternate. Each Site location is assigned a unique four digit master site number (MSNO), the MSNO followed by a letter designating the Alternate (O, A, B, etc) is the assigned five digit Identification number (IDNO). A single, or multiple IDNO's may exist for each Site. The spotted owl summary portion of the data includes a single record for each year at every owl site with survey effort (and some with no survey effort), and is compiled from all survey visits during the given year. The summary data is attached to the coordinate for a unique IDNO at each site. Each summary record includes information such as survey effort, occupancy, nesting status, and reproductive status. When using the information from the summary data, be aware of the definitions so the data is correctly interpreted. STOC Northern Spotted Owl, only spotted owls are surveyed for or detected. STVA Barred Owl, only barred owls are detected. STNE Great Gray Owl, only great gray owls are detected. SBOH Spotted Owl Barred Owl hybrid, any generation, (no pure bred spotted owls present). This code will also be used on the rare instances when a hybrid/STVA mixed pair are encountered. STMX - Mixed pair (one pure bred spotted owl present). Provide a description of the species composition in the Comment field, e.g. Male spotted owl with a female barred owl. Be conservative when making this determination since this implies that the individuals are actually a social pair. A male and female should be detected in close proximity several times during the year. STUN Genus Strix, unknown species. BUVI Great Horned Owl detected.

  1. How should this data set be cited?

    Bureau of Land Management, 20140930, BLM OR Publication Northern Spotted Owl Sites 2013 Point.

  2. What geographic area does the data set cover?

    Bounding coordinates:
    West: -125
    East: -116
    North: 49.5
    South: 41.5

  3. What does it look like?

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

    Calendar date: 20140919
    Currentness reference:
    publication date

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

  6. How does the data set represent geographic features?

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

      It contains the following vector data types (SDTS terminology):
      • Entity point (2112)

    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 8.9831528411952133e-009. Longitudes are given to the nearest 8.9831528411952133e-009. 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?

     (Source: BLM)

    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Common name of location (Source: BLM)

    A unique 4 digit Master Site Number is assigned to each designated site under a statewide numbering system coordinated by the Oregon Department of Fish and Wildlife (ODFW), Northwest Region Office.  Obtain new numbers from the Corvallis office of the ODFW (737-4186). When determining whether to designate a new site, be sure to check the location (T R Sec), as well as the name, to avoid duplication.  The previous database allowed temporary Master Site Numbers, currently there is no data on temporary site locations, however a unique number may be used in the Unassigned Visits table.   If sufficient information to designate a site is obtained, a new number will be entered into this Site Table and the Unassigned Visit records which apply to that MSNO will be moved to the new MSNO in the Visit Table. (Source: BLM)

    The Identification number is a concatenation of the MSNO and Location Identifier which narrows down the specific location within the MSNO site to a site center when more then one Site Center has been established.  The application concatenates the value.  This is not a field in the database but may be used to query the database. (Source: BLM)

    BLM District that contains the site. (Source: BLM)

    Resource Area Boundary in which the site occurs. (Source: BLM)

    Township number of site (Source: BLM)

    Range number of site (Source: BLM)

    Section number of site (Source: BLM)

    Quarter Section location of site (Source: BLM)

    Sixteenth Section location of site (Source: BLM)

    A 6 digit code for the site center in UTM coordinates. A typical entry of UTMX would be 513623.  The last digit indicates an accuracy to within 1 meter.  If you do not feel that the location is accurate to 1 meter, fill the last place(s) with 0 (513620).  All UTM entries are in North America Datum 27, Zone 10. (Source: BLM)

    A 7 digit code for the site center in UTM coordinates. A typical entry of UTMY would be 513623.  The last digit indicates an accuracy to within 1 meter.  If you do not feel that the location is accurate to 1 meter, fill the last place(s) with 0 (513620).  All UTM entries are in North America Datum 27, Zone 10. (Source: BLM)

    The Level 1 landowner is a 2 digit code indicating the landowner or agency administering the land at the nest site, core area, or whatever point on the map is the site center(primary landowner).  This is ownership at the actual point, and may be different from the Resource Area boundary designated in the field SI_GI above.  If a second landowner exists within the immediate vicinity (e. g. 1/4 mile) of the owl, the Level 1 secondary landowner is entered as SI_L1S. (Source: BLM)

    A 3 digit code for the secondary level of land ownership, such as National Forest, BLM District, Private Company, Municipality, Reservation, etc. for the nest site, core area, or whatever point on the map is the site center.  If a second landowner exists within the immediate vicinity (e. g. 1/4 mile) of the owl, the secondary landowner is entered as SI_L2S. (Source: BLM)

    2 character alphabetical code for demographic area (Source: BLM)

    Not within a demography area
    Klamath study area
    North coast study area
    Other demography study area - describe in comments.
    Roseburg study area (Tyee)
    South cascades study area

    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

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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)

    • Bureau of Land Management

  2. Who also contributed to the data set?

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

    Bruce Hollen
    Bureau of Land Management
    Wildlife Biologist
    P.O. Box 2965
    Portland, OR 97208

    503-808-6604 (voice)
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Why was the data set created?

BLM Spotted Owl data used for public release.

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How was the data set created?

  1. Where did the data come from?

    NSO (Northern Spotted Owl) network database, BLM Oregon State Office. (source 1 of 1)

    Bureau of Land Management, unknown, NSO (Northern Spotted Owl) network database, BLM Oregon State Office..

    Type of source media: None

  2. What changes have been made?

    Date: 20140901 (change 1 of 1)
    The NSO network database Site and Summary tables were queried. Two files were created, one consisting of only Site information, and one consisting of all Summary information with Site file coordinates attached to it. Within each of these files the data has been broken into 2 categories, the "internal" category includes all data points, the "external" does not include data points on private land.

    Person responsible for change:
    Eric Hiebenthal
    Bureau of Land Management
    GIS Data Administrator
    P.O. Box 2965
    Portland, OR 97208

    (503) 808-6565 (voice)

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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?

  3. How accurate are the heights or depths?

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

  5. How consistent are the relationships among the observations, including 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 might 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 sources from which they were derived, and both scale and accuracy may vary across the data set. These data might 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, OR 97208

    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?

    Downloadable Data

  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: 20141006

Metadata author:
Roger Mills
Bureau of Land Management, Oregon State Office
GIS Specialist
P.O. Box 2965
Portland, OR 97208

(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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