GIS Metadata

BLM OR Hydrography Publication Flow Line

Frequently-asked questions:

What does this data set describe?

BLM OR Hydrography Publication Flow Line

HYD_PUB_FLOWLINE: This dataset contains flowline features from the US Geologic Survey (USGS) High Resolution National Hydrography Dataset (NHD). NHD Flowline features are linear depictions of streams and centerlines of rivers. Additional attributes have been added from the Bureau of Land Management (BLM) Aquatic Resources Information Management System (ARIMS) and from the BLM's Land Ownership Polygon layer. The statewide version of this dataset does not include species-specific fish distribution information. Species-specific fish data is only included on the individual subbasin distributions of the data. This dataset will be refreshed as-needed to reflect updates to the NHD and ARIMS.

Supplemental information:
A published revision of the Department Manual's Part 305: Departmental Science Effects, Chapter 3: Integrity of Scientific and Scholarly Activities (305 DM 3), effective December 16, 2014, is available online at http://elips.doi.gov/ELIPS/DocView.aspx?id=4056. Scholarly information considered in Departmental decision making must be robust, of the highest quality, and the result of as rigorous scientific and scholarly processes as can be achieved. Most importantly, it must be trustworthy. This policy helps us to achieve that standard (http://www.doi.gov/scientificintegrity/index.cfm) The High Resolution NHD in Oregon and Washington is stewarded by the Pacific Northwest Hydrography Framework (PNWHF). The PNWHF is a regional partnership of federal and state agencies that provides cooperative stewardship and technical assistance in the maintenance of the NHD. For more information on the Pacific Northwest Hydrography Framework(PNWHF) please refer to the following website: http://www.pnwhf.org/ For more information about the National Hydrography Dataset (NHD) please refer to the following website: http://nhd.usgs.gov/ For more information about the Aquatic Resources Information Management System (ARIMS) please refer to the following website (BLM Intranet Only): http://teamspace/or/sites/arims/Pages/default_old.aspx For more information regarding the Hydrography Publication format, including attribute naming conventions and changes from previous version of the datasets please see BLM OR Hydrography Publication Dataset Guide July 2010: http://www.blm.gov/or/gis/files/docs/HydPublicationDatasetGuide.pdf

  1. How should this data set be cited?

    U.S. Department of Interior, Bureau of Land Management (BLM), 20171122, BLM OR Hydrography Publication Flow Line: OR BLM, Portland, Oregon.

  2. What geographic area does the data set cover?

    Bounding coordinates:
    West: -124.871214
    East: -115.562257
    North: 50.629803
    South: 40.763446

  3. What does it look like?

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

    Calendar date: 20171122
    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):
      • String (0)

    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 1.3333333312637301e-007. Longitudes are given to the nearest 1.3333333312637301e-007. 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?

    This dataset contains flowline features from the US Geologic Survey (USGS) High Resolution National Hydrography Dataset (NHD). (Source: BLM)

    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    The reachcode serves as a route system identifier. (Source: BLM)

    Begin measure of segment.  The NHD route system is measured as percentage from 0 to 100 along a reach or route. (Source: BLM)

    End measure of segment. (Source: BLM)

    Three-digit integer value; unique identifier of a feature type. (Source: USGS)

    Five-digit integer value; comprised of the feature type. (Source: USGS)

    Geographic Names Information System (GNIS) Feature Id. (Source: BLM)

    Water feature name from Geographic Name Information System (GNIS). (Source: BLM)

    water feature name, for internal BLM use only. This name may or may not  be in the Geographic Names Information System (GNIS). (Source: BLM)

    Water feature periodicity code.  This is a classification for water features in terms of the seasonal behavior. (Source: BLM)

    Characteristics of the flow pattern of a stream over space as defined by the Northwest Forest Plan. (Source: BLM)

    System-assigned NHD unique feature identifier. (Source: BLM)

    Actual or modeled fish presence. (Source: BLM)

    a classification of stream flow primarily in relation to its expression at the earth's surface. (Source: BLM)

    A dimensionless measure of the position of a stream in the hierarchy of tributaries. (Source: BLM)

    The most recently collected Proper Functioning Condition. (Source: BLM)

    User assigned identifier for PFC record. (Source: BLM)

    PFC information was collected.. (Source: BLM)

    BLM district or field office identifier. (Source: BLM)

    Date corresponding to BLM district or field office identifier. (Source: BLM)

    Used to track the ground-truthing of stream channels, this is the date on which the stream. (Source: BLM)

    The entity that administers the surface rights. (Source: BLM)

    Name of Sub-entity ownership (eg. Name of Forest if USFS). (Source: BLM)

    Description of how NHD_FLOW was determined. (Source: BLM)

    The organization that compiled, entered, updated or deleted the hydrography watercourse data. (Source: BLM)

    The compilation map or image source used when adding or updating hydrography data. (Source: BLM)

    The compilation map or image source date used for the addition or update of hydrography watercourse data. (Source: BLM)

    The methodology used to compose the hydrography watercourse information and how it was derived prior to data entry into the spatial coverage. (Source: BLM)

    The scale denominator of the feature data source. (Source: BLM)

    The date when the Hydrography Publication data was generated. (Source: BLM)

    For Artificial paths, the Permanent_Identifier  of the overlying NHDArea or NHDWaterbody feature. (Source: BLM)

    The 8 digit hydrologic unit number that the data is contained in. (Source: BLM)

    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    Length of feature in internal units. (Source: ESRI)

    Entity and attribute overview:
    For complete entity and attribute definitions please see BLM OR Hydrography Publication Dataset Guide July 2010:
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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)

    • U.S. Department of Interior, Bureau of Land Management (BLM)

  2. Who also contributed to the data set?

    USGS National Hydrography Dataset (NHD): Aquatic Resources Information System (ARIMS)

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

    Dale Stewart
    Bureau of Land Management
    Natural Research Specialist
    P.O. Box 2965
    Portland, OR97208

    (541) 751-4420 (voice)
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Why was the data set created?

This publication format is intended to improve the usability of the High Resolution NHD and ARIMS by combining attributes from both sources into one dataset with a simplified structure. The publication format includes the most commonly used attribute information. Other less commonly used attributes are available directly from the ARIMS system.

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How was the data set created?

  1. Where did the data come from?

    NHD_FLOWLINE (source 1 of 1)

    USGS, unknown, NHD_FLOWLINE.

    Type of source media: onLine
    Source contribution:

  2. What changes have been made?

    Date: 20100101 (change 1 of 1)
    For more information on the processes used to create this dataset, please see BLM OR Hydrography Publication Dataset Guide July 2010: http://www.blm.gov/or/gis/files/docs/HydPublicationDatasetGuide.pdf

    Person responsible for change:
    Jay Stevens
    Bureau of Land Management, Oregon State Office
    GIS Developer
    P.O. Box 2965
    Portland, OR97208

    (503) 808-6480 (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?

    Complete for Oregon and Washington.

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

    In some cases, where conflicting attribute values exist in ARIMS linear event tables, duplicate spatial representations of sections of flowlines may occur that depict the multiple conflicting values in ARIMS. On the individual subbasin distributions of this dataset, those duplicated sections are identified by the topology layer that is included with the data.

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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. DATA STEWARD APPROVAL: Mike Brown, state data steward for HYD_PUB_FLOWLINE, approved the use of this dataset on June 9, 2017.

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?

    • Availability in digital form:

    • Data format:
      in format ArcGIS Feature Class (version Feature Class) Winzip

    • 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?

    Arc GIS, Winzip

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Who wrote the metadata?

Last modified: 20100830
Last reviewed: 20170320

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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