. .

U.S. DEPARTMENT OF THE INTERIOR

BUREAU OF LAND MANAGEMENT

Oregon / Washington

GIS Metadata


BLM OR Grazing Allotments and Pastures Polygon

Frequently-asked questions:


What does this data set describe?

Title:
BLM OR Grazing Allotments and Pastures Polygon

Abstract:
GRA_POLY: Livestock grazing allotment and pasture boundaries with associated attributes describing some basic characteristics of the allotments and pastures. Each allotment has one or more pastures. This data is designed in accordance with the OR BLM "Grazing Allotments and Pastures Data Standard."

Supplemental information:
BLM -Bureau of Land Management Animal Unit - Considered to be one mature cow of approximately 1,000 pounds, either dry, or with a calf up to 6 months of age or equivalent based on a standardized amount of forage consumed. AUM (Animal Unit Month) - The amount of dry forage required by one animal unit for one month based on a forage allowance of 26 pounds per day. RAS (Rangeland Administration System) - The system used by BLM for billing for grazing on public land. The system contains allotments, pastures, permittees, grazing fees and other pertinent information related to public land grazing. Fenced Federal Range - Generally a small amount of public land fenced with a large amount of private land. Seed Ripe - In terms of plant phenology, it is that point from where seed becomes hard to the beginning of seed dispersal. Custodial - An area where the grazing system is not defined and resource values on public land are protected.

  1. How should this data set be cited?

    Bureau of Land Management, 20140902, BLM OR Grazing Allotments and Pastures Polygon.

  2. What geographic area does the data set cover?

    Bounding coordinates:
    West: -124.077907
    East: -116.774507
    North: 49.000110
    South: 41.893851

  3. What does it look like?

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

    Calendar date: 20140902
    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):
      • GT-polygon composed of chains (7069)

    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 8.98315284119521e-009. Longitudes are given to the nearest 8.98315284119521e-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?

    OSODBA.gra_poly
    BLM Grazing Polygons (Source: BLM)

    OBJECTID
    Internal feature number. (Source: ESRI)
                      

    Sequential unique whole numbers that are automatically generated.

    SHAPE
    Feature geometry. (Source: ESRI)
                      

    Coordinates defining the features.

    ALLOTNUM
    A unique number assigned to each allotment in a district or inventory (Source: BLM)
                      

    ALTPAST
    The polygon identifier for the allotment and pastures.  It normally consists of the five-character allotment number, an underscore (_), and the two-character pasture number.   All preceding blank characters must be populated with zeros.  For example:  allotment number 302, pasture number 2, would be input as 00302_02.  This field may be used as a link to other related databases, including RAS.  The ALTPAST concatenated with Administrative state (derived from BLM_ORG_CD) is unique in RAS, but, in GRA, it is possible to have more than one polygon with the same ALTPAST.  In this case, RAS acres are the sum of the polygon acres.  Also, not all allotments and pastures are included in RAS.  There is dependence between this attribute and the GRAZSYS (Grazing Allotment System CD) attribute.  Certain codes in GRAZSYS dictate the form that this (ALTPAST) attribute takes.  Certain questions must be asked in order to determine the correct choice for ALTPAST.  The most important is the question:  Is this area within an allotment or not?  This may take some research into old files to determine.  Many areas assumed outside of allotments are, in fact, still officially included in an allotment.  Because pastures are defined by fences, not exact ownership lines, there are many instances where slivers and small parcels of BLM are fenced in with areas outside of allotments.  There are also scattered, isolated BLM parcels that are not included in allotments.  The various choices for ALTPAST are described below. Areas within Allotments: 1.  General Pastures usually contain a large percentage of public land but can have a large percentage of private land if the pasture is part of a grazing system in an AMP.  This is the type of pasture present in most allotments and is always listed in RAS.  All records in RAS should have corresponding polygons in GRA, but not vice versa.  Because RAS is for billing, GRA will have areas not covered by RAS.  Valid value:  05231_11 2.  The FFR is an allotment which is mostly private but contains some public land fenced within.  This area is always listed in RAS.  The ALTPAST should have the standard format as for General Pastures.  The GRAZSYS is Custodial.  3.  Mostly Private Pastures which contain a very small percentage of public land, usually slivers of public land where fences do not follow ownership lines, are another type of areas within allotments.  These pastures are included within an allotment and should (but may not) be listed in RAS.  The GRAZSYS is 99.   Valid value:  06010_99 4.  Exclosures are areas designed and constructed with the idea of keeping   livestock and sometimes wildlife out of a particular area.  If they are large enough, they should have pasture numbers within allotments and be included in RAS.  The GRAZSYS is EX, RX, MX, or XX.  Valid value: 05231_11  Areas NOT within Allotments: 1.  Not Allocated areas are closed to livestock grazing through a LUP decision or legislation.  No allotment or pasture numbers would be assigned to these areas and they are not included in RAS.  The GRAZ_SYS has NX.  Valid value:  NOALC  2.  Completely private, state, United States Fish and Wildlife Service, or other lands which are not part of any allotment controlled by a BLM district and do not fall under BLM grazing management.  These areas would not be within any allotment or pasture and would not be in RAS.  The GRAZ_SYS is "00" (zeroes).  Valid value:  OUT 3.  Unallotted areas are BLM lands not officially assigned to a particular livestock permit.  These lands are not closed to livestock grazing and could be assigned to a permit in the future.  These areas may have an allotment and/or pasture number and may be included in RAS.  The GRAZSYS has Unallotted.  Districts with large, non-BLM areas surrounding scattered BLM parcels may have large polygons labeled "UNALT" if there is no grazing management on these scattered BLM parcels and no identified fences to block off the large non-BLM blocks.  Valid value:  UNALT. (Source: BLM)
                      

    PASTNUM
    Pasture Number: The number used to identify a pasture within an allotment. This field is derived fromAltPast. It is the last 2 characters of AltPast unless AltPast contains "NOALLOC","UNALLOT", or "OUT", in which case this attribute is blank. (Source: BLM)
                      

    ALLOTNAME
    The official name assigned to a specific allotment.  All keyboard characters except special characters may be used.  If ALTPAST contains "NOALLOC," or "OUT," then this attribute will be blank.   If the allotment is a Fenced Federal Range (FFR), include FFR in the name (e.g., Pickled Butte FFR).  Should be downloaded from RAS. (Source: BLM)
                      

    PASTNAME
    The name of a specific pasture in an allotment.  Allow all keyboard characters except special characters.  Should be downloaded from RAS. (Source: BLM)
                      

    GRAZSYS
    Primary grazing management system within the pasture.  Code containing "X" (XX, EX, RX, MX, NX) indicate BLM lands with no livestock grazing.  (Source: BLM)
                      

    ValueDefinition
    WO
    Winter Only-Winter use annually with no use extending into other seasons.
    SP
    Early Spring-Early spring use annually with no use extending into other seasons.
    SS
    Spring/Summer-Use throughout the critical growing season annually.
    SL
    Season Long-Season long use annually, including during the growing season (spring, summer, fall) 
    YL
    Use throughout the entire year (spring, summer, fall, winter) annually.
    SD
    Early Spring/Deferred:  Early spring and after seed-ripe use annually.
    DF
    Deferred:  Delay of livestock for an adequate period of time to provide for plant reproduction, establishment of new plants, or restoration of vigor of existing plants.
    DR
    Deferred Rotation:   Any grazing system which provides for a systematic rotation of the deferment among pastures.
    RR
    Rest/Rotation:  At least one year of rest from livestock grazing is scheduled within the rotation.
    RE
    Reservoir Enclosure:  Grazed reservoir enclosure, fenced to allow livestock access from more than one pasture.
    XX
    Exclosure:  An area fenced to exclude livestock grazing for non-specified reasons
    RX
    Riparian Exclosure:  Areas adjacent to water those are fenced to exclude livestock grazing.
    EX
    Experimental Exclosure:  Study or experimental plot excluded from livestock grazing.
    MX
    Management Exclosure:  Area excluded from livestock grazing to protect other resource values such as recreation sites, wildlife guzzlers, wells, disposal sites, or otherwise not suitable for grazing.
    UA
    Unallotted:  Small areas of BLM not currently assigned to an allotment.
    NX
    Not Allocated:  Area is closed to livestock grazing either through a land use plan or by legislation.
    CU
    Custodial:  Areas where the grazing system is not defined and resource values are protected, such as Fenced Federal Range (FFR).
    00
    (zeroes) Out:  Area with no BLM land, not part of the allotment system.
    99
    Mostly private area with small slivers of BLM land (not currently managed) within an allotment. 
    FA
    Grazing use occurs in the fall months after most plants have reached seed ripe and have stored carbohydrate reserves.
    FW
    Grazing use occurs in the fall and winter months when plants are dormant . 

    MGMTCAT
    Range condition assessment categories as defined in the rangeland program summary (RPS). (Source: BLM)
                      

    ValueDefinition
    I
    Improve current unsatisfactory resource(s) condition
    M
    Maintain current satisfactory resource(s) condition
    C
    Custodial Allotment "manage "custodially," while protecting existing resource values

    GIS_ACRES
    The area of a polygon as calculated by GIS in acres. (Source: BLM)
                      

    GLOBALID
    Globally Unique Identifier (Source: ESRI)
                      

    ADMINRA
    The BLM State, district, and field office which has administrative responsibility for the allotment. (Source: blm)
                      

    ValueDefinition
    OR000
    Oregon/Washington BLM
    ORB00
    Burns District Office
    ORB05
    Three Rivers Field Office
    ORB06
    Andrews Field Office
    ORC00
    Coos Bay District Office
    ORC03
    Umpqua Field Office
    ORC04
    Myrtlewood Field Office
    ORE00
    Eugene District Office
    ORE05
    Siuslaw Field Office
    ORE06
    Upper Willamette Field Office
    ORL00
    Lakeview District Office
    ORL04
    Klamath Falls Field Office
    ORL05
    Lakeview Field Office
    ORM00
    Medford District Office
    ORM05
    Butte Falls Field Office
    ORM06
    Ashland Field Office
    ORM07
    Grants Pass Field Office
    ORM08
    Glendale Field Office
    ORP00
    Prineville District Office
    ORP04
    Central Oregon Field Office
    ORP06
    Deschutes Field Office
    ORR00
    Roseburg District Office
    ORR04
    Swiftwater Field Office
    ORR05
    South River Field Office
    ORS00
    Salem District Office
    ORS04
    Cascades Field Office
    ORS05
    Marys Peak Field Office
    ORS06
    Tillamook Field Office
    ORV00
    Vale District Office
    ORV04
    Malheur Field Office
    ORV05
    Baker Field Office
    ORV06
    Jordan Field Office
    ORW00
    Spokane District Office
    ORW02
    Wenatchee Field Office
    ORW03
    Border Field Office

    SHAPE.AREA
    SHAPE.LEN
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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?

    Robert Hopper
    Bureau of Land Management
    Rangeland Management Specialist
    2965 P.O. Box
    Portland, OR 97208
    US

    (503) 808-6118 (voice)
    (503) 808-6334 (FAX)
    rhopper@blm.gov
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Why was the data set created?

Land use planning, allotment management plans, and analysis.

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How was the data set created?

  1. Where did the data come from?

    FS_CFF (source 1 of 11)

    U.S. Forest Service, Cartographic Feature Files.

    Type of source media: None
    Source scale denominator: 24000
    Source contribution:
    Digital fencelines

    GPS (source 2 of 11)

    BLM District range staff, unknown, Global Positioning System data.

    Type of source media: None
    Source contribution:
    Lines for allotments and pastures.

    RAS (source 3 of 11)

    BLM District range staff, unknown, Rangeland Administration System.

    Type of source media: None
    Source contribution:
    Attribute data.

    DOQ (source 4 of 11)

    U.S. Geological Survey or another mapping agency in cooperation with USGS., 1:24,000-scale Digital Orthophoto Quadrangles.

    Type of source media: hardcopyPhoto
    Source scale denominator: 24000
    Source contribution:
    Backdrop for screen digitizing lines for allotments and pastures.

    LLI (source 5 of 11)

    BLM OR/WA State Office, 19960901, Landlines.

    Type of source media: None
    Source contribution:
    Lines for allotments and pastures.

    Grazing Allotment Boundaries Forest Service Oregon (source 6 of 11)

    U.S. Forest Service, Grazing Allotment Boundaries Forest Service Oregon.

    Type of source media: None
    Source scale denominator: 24000
    Source contribution:
    Digital fencelines for adjacent allotments; FS allotment numbers.

    DRG (source 7 of 11)

    U.S. Geological Survey or another mapping agency in cooperation with USGS., 1:24,000-scale Digital Raster Graphics files.

    Type of source media: None
    Source scale denominator: 24000
    Source contribution:
    Backdrop for screen digitizing lines for allotments and pastures.

    DLG (source 8 of 11)

    U.S. Geological Survey or another mapping agency in cooperation with USGS., 1:24,000-scale Digital Line Graphs.

    Type of source media: None
    Source scale denominator: 24000
    Source contribution:
    Lines for allotments and pastures.

    GCDB (source 9 of 11)

    OR/WA BLM, 19890101, Geographic Coordinate Database Oregon (Point and Line).

    Type of source media: onLine
    Source scale denominator: 24000
    Source contribution:
    Polygon corners and lines.

    BLM-GRA (source 10 of 11)

    BLM District range staff, 20050101, BLM District records.

    Type of source media: hardcopyPaper
    Source scale denominator: 24000
    Source contribution:
    Polygons for allotments and pastures.

    GABS (source 11 of 11)

    BLM District range staff, unknown, Grazing Authorization and Billing System.

    Type of source media: None
    Source contribution:
    Attribute data.

  2. What changes have been made?

    Current version of coverage was redesigned as a geodatabase and loaded into ArcSDE. The following entity changes were performed during this redesign: New field "VERSION_NAME" added to both the polygon and line feature classes. New fields "AdminState" and "AdminRA" added to polygon feature class. New fields "GraCoordSource" and "GraAccuracyFt" were added to the line feature class.

    Person responsible for change:
    Barbara Welsh-Haney
    Bureau of Land Management, Oregon State Office
    GS0301 - GIS Specialist (GIS DATA MGMT)
    PO Box 2965
    Portland, OR 97208
    US

    (503) 808-6313 (voice)
    bhaney@blm.gov

    Data sources used in this process:
    • GRA

    Date: unknown (change 2 of 10)
    Manuscripting - District staff copied grazing allotment and pasture boundaries onto mylar quad-based map overlays. Existing fence lines shown on U.S. Geological Survey (USGS) quad maps were copied onto the mylar maps. Additional fence lines were added from orthophoto quads, aerial photos, GPS or other sources. Allotment/pasture name and number attributes were also placed onto the mylar maps in preparation for digitizing. Road and Stream lines already available in digital line graph (DLG) format as part of the USGS cultural features theme or from the Forest Service's cartographic feature file (FS_CFF) theme were copied directly into the GRA theme. Some fence lines defined as following or paralleling a road at a set distance and others defined as left or right stream banks were input by copying the road or stream centerline into a temporary file, building a buffer based on the distance from the centerline, and adding the buffered line to the GRA theme. BLM contractors or GIS staff digitized some of the lines from the map overlays or conducted "heads up" digitizing using Arc/INFO ArcEdit module. Heads up digitizing involved digitizing lines on the screen using scanned aerial photos (i.e. DOQ), satellite imagery, or digital raster graphic (DRG) files as a backdrop. Labels were added, lines and polygons attributed, and the theme run through quality control and corrected, where necessary. The individual quads were merged into a single Arc/INFO coverage, attributes were rechecked, and then the theme was inserted into the District libraries. (NOTE: It is expected that GPS and other data sources will be used in the future to more accurately locate fence lines and collect/import this data into this theme).

    Person responsible for change:
    Barbara Welsh-Haney
    Bureau of Land Management, Oregon State Office
    GS0301 - GIS Specialist (GIS DATA MGMT)
    PO Box 2965
    Portland, OR 97208
    OR

    (503) 808-6313 (voice)
    bhaney@blm.gov

    Data sources used in this process:
    • DOQ
    • DRG
    • FS_CFF
    • DLG
    • RAS
    • LLI
    • BLM-GRA
    • GCDB
    • GABS
    • GPS

    Date: 20101110 (change 3 of 10)
    Create polygons from GPS field data, GCD, and DRGs hard copy of allotment boundays from the range staff

    Person responsible for change:
    Bruce Hasse
    Bureau ofLand Management,
    GIS Specialist
    P.O. Box 947
    Baker City, OR 97814
    US

    (541) 523-1969 (voice)
    bhaase@blm.gov

    Date: 20101227 (change 4 of 10)
    Deleted two parcels from AllotNum 00756 in the GRA per Angela Links instructions. These two parcels were transfered to Douglas County PUD and are no longer under BLM management.

    Person responsible for change:
    Alan Monek
    Bureau of Land Management, Wenatchee Resource Area
    GIS Technician
    915 N. Walla Walla
    Wenatchee, WA 98801
    US

    (509) 665-2125 (voice)
    amonek@blm.gov

    Date: 20110524 (change 5 of 10)
    Changed Pastures to 99 or OUT or UNALLOT for Otley Brothers/Chimney/CM Otley. Adjusted pastures to fencelines for several Three Rivers allotments. Add to Metadata Process Step.

    Person responsible for change:
    Pam Keller
    Bureau of Land Management, Burns District
    GIS Coordinator
    28910 Hwy 20 West
    Hines, OR 97738
    US

    (541) 573-4486 (voice)
    pkeller@blm.gov

    Date: 20110901 (change 6 of 10)
    Built the polygon for the North Dixie Allotment which was missing by selecting arcs and then building the polygons.Attributes for two existing polygons were updated to correct an error in the allotment name and related info for those allotments/pastures.

    Person responsible for change:
    Paul Leatherbury
    Bureau of Land Management, Vale District
    3285 11th St
    Baker City, OR 97814
    US

    (541) 523-1965 (voice)
    pleather@blm.gov

    Date: 20111015 (change 7 of 10)
    Updated to reflects 2011 changes to the Grazing data standard: converted Administrative Resource Area to FBMS-style codes; ALTPAST values UNALLOT and NOALLOC converted to UNALT and NOALC, respectively; removed field for Administrative State as redundant (can be determined from Administrative Resource Area).

    Person responsible for change:
    Steve Salas
    Bureau of Land Management, Oregon State Office
    GIS Specialist
    P.O. Box 2965
    Portland, OR 97208
    US

    (503) 808-6416 (voice)
    ssalas@blm.gov

    Date: 20120813 (change 8 of 10)
    Subdivided 06125 Roaring Springs FFR into12 pastures with bits of managed BLM (Riley Huff #1, Deep Creek #3, Springs #4, Skull Creek #5, Private Hollywood #6, Rim #7, Sand Dunes #8, North Desert #9, Middle Desert #10, Skull Creek Seeding #11, Kochia Seeding #12) and remainder (all private) became OUT polygon. Also expanded 06038 Alvord Peak Allotment (was just one pasture, #4) into the former Roaring Springs FFR and subdivided into Skull Lake #1, Upper Road Canyon #2 and Long Hollow Summit #3. Also modified the northern boundary of 00032 South Catlow Allot pasture #1 to match new Roaring Springs fenced pasture boundaries. Changes per Autumn Toelle.

    Person responsible for change:
    Pam Keller
    Bureau of Land Management
    GIS Spec.
    28910 Hwy 20 West
    Hines, OR 97738-9424
    US

    (541) 573-4486 (voice)
    (541) 573-4411 (FAX)
    pkeller@blm.gov

    Date: 20130709 (change 9 of 10)
    GIS_ACRES field added.

    Person responsible for change:
    Steve Salas
    Bureau of Land Management
    GIS Specialist
    P.O. Box 2965
    Portland, OR 97208
    US

    (503) 808-6340 (voice)
    r2mills@blm.gov

    Date: 20130923 (change 10 of 10)
    Domain values added. FA - grazing use occurs in the fall months after most plants have reached seed ripe and have stored carbohydrate reserves. FW - grazing use occurs in the fall and winter months when plants are dormant .

    Person responsible for change:
    Roger Mills
    Bureau of Land Management
    GIS Specialist
    P.O. Box 2965
    Portland, OR 97208
    US

    (503) 808-6340 (voice)
    r2mills@blm.gov

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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?

    Data is currently available for the Burns, Medford, Lakeview, Spokane, Coos Bay, Vale, and Prineville BLM Districts.

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

    Grazing allotments consist of unique polygons. Pastures are fully contained within one allotment.

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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, OR 97208
    US

    503-808-6340 (voice)
    503-808-6419 (FAX)
    ehiebent@blm.gov
    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?

Dates:
Last modified: 20130326
Last reviewed: 20130923

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

(503) 808-6340 (voice)
(503) 808-6419 (FAX)
r2mills@blm.gov
Hours of Service: 8:00-4:00
Contact Instructions:
None

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

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