. .

U.S. DEPARTMENT OF THE INTERIOR

BUREAU OF LAND MANAGEMENT

Oregon / Washington

GIS Metadata


<?xml version="1.0"?>
<metadata>
  <idinfo>
    <citation>
      <citeinfo>
        <origin>Bureau of Land Management, Oregon/Washington State Office</origin>
        <pubdate>20100101</pubdate>
        <title>BLM OR Aerial Photography Flightlines Line</title>
        <geoform>vector digital data</geoform>
        <onlink>http://www.blm.gov/or/gis/data.php</onlink>
      </citeinfo>
    </citation>
    <descript>
      <abstract>ap_flightlines_arc: This line dataset depicts the flightlines of aerial photography taken over BLM lands in Oregon and Washington. This is subject to update at a future point.</abstract>
      <purpose>This feature class assists in the location of aerial imagery.</purpose>
      <supplinf>This feature is intended to facilitate the location and identification of BLM flightline data for release to BLM district personnel, other agencies and the general public.</supplinf>
    </descript>
    <timeperd>
      <timeinfo>
        <rngdates>
          <begdate>19540701</begdate>
          <enddate>20130831</enddate>
        </rngdates>
      </timeinfo>
      <current>publication date</current>
    </timeperd>
    <status>
      <progress>Complete</progress>
      <update>As needed</update>
    </status>
    <spdom>
      <bounding>
        <westbc>-125</westbc>
        <eastbc>-116</eastbc>
        <northbc>49.5</northbc>
        <southbc>41.5</southbc>
      </bounding>
    </spdom>
    <keywords>
      <theme>
        <themekt>BLM</themekt>
        <themekey>Management</themekey>
      </theme>
      <theme>
        <themekt>ISO 19115</themekt>
        <themekey>imageryBaseMapsEarthCover</themekey>
      </theme>
      <theme>
        <themekt>None</themekt>
        <themekey>Aerial Photography</themekey>
        <themekey>Land Use Planning</themekey>
        <themekey>Flightlines</themekey>
        <themekey>Photogrametry</themekey>
      </theme>
      <theme>
        <themekt>ISO 19115 Topic Categories</themekt>
        <themekey>planningCadastre</themekey>
        <themekey>imageryBaseMapsEarthCover</themekey>
      </theme>
      <place>
        <placekt>BLM-State</placekt>
        <placekey>Washington</placekey>
        <placekey>Oregon</placekey>
      </place>
    </keywords>
    <accconst>PUBLIC DATA: None, these data are considered public domain.</accconst>
    <useconst>These data are provided by Bureau of Land Management (BLM) &#x201C;as is&#x201D; 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&#x2019;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 for 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 information may be updated without notification.</useconst>
    <ptcontac>
      <cntinfo>
        <cntorgp>
          <cntorg>Bureau of Land Management</cntorg>
          <cntper>Corey Plank</cntper>
        </cntorgp>
        <cntpos>Lead Cartographer</cntpos>
        <cntaddr>
          <addrtype>mailing</addrtype>
          <address>P.O. Box 2965</address>
          <city>Portland</city>
          <state>OR</state>
          <postal>97204</postal>
          <country>US</country>
        </cntaddr>
        <cntvoice>(503) 808-6145</cntvoice>
        <cntemail>cplank@blm.gov</cntemail>
      </cntinfo>
    </ptcontac>
    <native>Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.3.1.1850</native>
    <crossref>
      <citeinfo>
        <origin>Bureau of Land Management, Oregon State Office</origin>
        <pubdate>20100101</pubdate>
        <title>BLM OR Aerial Photography Boundaries Polygon</title>
        <onlink>http://www.blm.gov/or/gis/data.php</onlink>
      </citeinfo>
    </crossref>
    <crossref>
      <citeinfo>
        <origin>Bureau of Land Management, Oregon State Office</origin>
        <pubdate>20100101</pubdate>
        <title>BLM OR Aerial Photography Centers Point</title>
        <onlink>http://www.blm.gov/or/gis/data.php</onlink>
      </citeinfo>
    </crossref>
  </idinfo>
  <dataqual>
    <logic>Not Applicable</logic>
    <posacc>
      <horizpa>
        <horizpar>Flightlines connect photo centers so are only as accurate as the photo centers. 90% of the centerpoints are within 400 feet of their actual position.</horizpar>
        <qhorizpa>
          <horizpae>Based on an estimate of the amount of error expected in eyeballing and digitizing.</horizpae>
        </qhorizpa>
      </horizpa>
      <vertacc>
        <vertaccr>Not applicable.</vertaccr>
      </vertacc>
    </posacc>
    <lineage>
      <srcinfo>
        <typesrc>onLine</typesrc>
        <srccontr>Photocenters</srccontr>
      </srcinfo>
      <procstep>
        <procdesc>The flight lines were created by BLM employees who connected the dots of the photocenters in order to more easily see where flight line segments began, ended, or overlapped.</procdesc>
        <procdate>unknown</procdate>
        <proccont>
          <cntinfo>
            <cntorgp>
              <cntorg>Bureau of Land Management</cntorg>
              <cntper>Susan Nelson</cntper>
            </cntorgp>
            <cntpos>Cartographer/Remote Sensing Acquisition</cntpos>
            <cntaddr>
              <addrtype>mailing</addrtype>
              <address>P.O. Box 2965</address>
              <city>Portland</city>
              <state>OR</state>
              <postal>97204</postal>
              <country>US</country>
            </cntaddr>
            <cntvoice>(503) 808-6139</cntvoice>
            <cntemail>s1nelson@blm.gov</cntemail>
          </cntinfo>
        </proccont>
      </procstep>
      <procstep>
        <procdesc>Field names were standardized (given common names). Data was projected to GCS North American 1983 Datum. Individual flightline data were appended from individual project files to a line feature class.</procdesc>
        <procdate>20120423</procdate>
        <proccont>
          <cntinfo>
            <cntorgp>
              <cntorg>Bureau of Land Management, Oregon State Office</cntorg>
              <cntper>Eric Hiebenthal</cntper>
            </cntorgp>
            <cntpos>GIS Data Management Specialist</cntpos>
            <cntaddr>
              <addrtype>mailing</addrtype>
              <address>P.O. Box 2965</address>
              <city>Portland</city>
              <state>OR</state>
              <postal>97208</postal>
              <country>US</country>
            </cntaddr>
            <cntvoice>503-808-6565</cntvoice>
            <cntfax>503-808-6419</cntfax>
            <cntemail>ehiebent@blm.gov</cntemail>
          </cntinfo>
        </proccont>
      </procstep>
      <procstep>
        <procdesc>Inclusion of data from the recent imagery over the Douglas Complex and Big Windy Fires.</procdesc>
        <procdate>20130925</procdate>
        <proccont>
          <cntinfo>
            <cntorgp>
              <cntorg>Bureau of Land Management</cntorg>
              <cntper>Corey Plank</cntper>
            </cntorgp>
            <cntpos>Lead Cartographer</cntpos>
            <cntaddr>
              <addrtype>mailing</addrtype>
              <address>P.O. Box 2965</address>
              <city>Portland</city>
              <state>OR</state>
              <postal>97208</postal>
              <country>US</country>
            </cntaddr>
            <cntvoice>(503) 808-6145</cntvoice>
            <cntemail>cplank@blm.gov</cntemail>
          </cntinfo>
        </proccont>
      </procstep>
    </lineage>
  </dataqual>
  <spdoinfo>
    <direct>Vector</direct>
    <ptvctinf>
      <sdtsterm>
        <sdtstype>String</sdtstype>
        <ptvctcnt>14037</ptvctcnt>
      </sdtsterm>
      <sdtsterm>
        <sdtstype>String</sdtstype>
        <ptvctcnt>14037</ptvctcnt>
      </sdtsterm>
    </ptvctinf>
  </spdoinfo>
  <eainfo>
    <detailed>
      <enttyp>
        <enttypl>AP_Flightlines_Arc</enttypl>
      </enttyp>
      <attr>
        <attrlabl>OBJECTID</attrlabl>
        <attrdef>Internal feature number.</attrdef>
        <attrdefs>ESRI</attrdefs>
        <attrdomv>
          <udom>Sequential unique whole numbers that are automatically generated.</udom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Shape</attrlabl>
        <attrdef>Feature geometry.</attrdef>
        <attrdefs>ESRI</attrdefs>
        <attrdomv>
          <udom>Coordinates defining the features.</udom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Shape_Length</attrlabl>
        <attrdef>Length of feature in internal units.</attrdef>
        <attrdefs>ESRI</attrdefs>
        <attrdomv>
          <udom>Positive real numbers that are automatically generated.</udom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Roll</attrlabl>
        <attrdef>Number assigned to the film roll.</attrdef>
        <attrdefs>BLM</attrdefs>
      </attr>
      <attr>
        <attrlabl>Flight</attrlabl>
        <attrdef>The number assigned to the flight line.  Historically, R was used for reflights, G was used for Gap flights.  Flightline segments, after 1998, were numbered with decimals (14.0, 14.1, 14.2, etc.).</attrdef>
        <attrdefs>BLM</attrdefs>
      </attr>
      <attr>
        <attrlabl>Proj_name</attrlabl>
        <attrdef>Project code used as a unique identifier.</attrdef>
        <attrdefs>BLM</attrdefs>
      </attr>
      <attr>
        <attrlabl>District</attrlabl>
        <attrdef>BLM District project is located within.</attrdef>
        <attrdefs>BLM</attrdefs>
      </attr>
      <attr>
        <attrlabl>Length_Mi</attrlabl>
        <attrdef>Length of each line of flight in miles. Distance was calculated in UTM.</attrdef>
        <attrdefs>BLM</attrdefs>
      </attr>
      <attr>
        <attrlabl>Drainage</attrlabl>
        <attrdef>Alphanumeric code given to centers on flightlines that capture streams. Drainage codes are specific to a given reach within a given project. Different projects may share the same drainage values. Different flightlines over the same reach within the same project will share the same drainage value. Different reaches within the same project will have different values.</attrdef>
        <attrdefs>BLM</attrdefs>
      </attr>
      <attr>
        <attrlabl>Stream_Name</attrlabl>
        <attrdef>Stream Name along which flightline is coincident.</attrdef>
      </attr>
    </detailed>
    <overview>
      <eaover>Flight lines are in an arc feature class, created from digital files by connecting photocenters.</eaover>
      <eadetcit>Since 2001, contractors have collected GPS photo centers at the instant of exposure and provided them in digital form.  Where GPS obtained photo centers were not available, BLM scanned mylar or paper indexes and registered them to a projection before digitizing the photo centers.  In some cases, BLM digitized every fifth photo center and allowed a software program to interpolate the positions of the photo centers in between.  Those photo points are identified as "I" in the "Type" field of the attributes.

Although BLM cannot verify, in each individual case, how historical indexes were made, it is presumed that the contractor who flew the photography identified the photo center positions and marked them on a mylar or paper map.</eadetcit>
    </overview>
  </eainfo>
  <distinfo>
    <distrib>
      <cntinfo>
        <cntorgp>
          <cntorg>Bureau of Land Management, Oregon State Office</cntorg>
          <cntper>Eric Hiebenthal</cntper>
        </cntorgp>
        <cntpos>GIS Data Management Specialist</cntpos>
        <cntaddr>
          <addrtype>mailing</addrtype>
          <address>P.O. Box 2965</address>
          <city>Portland</city>
          <state>OR</state>
          <postal>97208</postal>
          <country>US</country>
        </cntaddr>
        <cntvoice>503-808-6565</cntvoice>
        <cntfax>503-808-6419</cntfax>
        <cntemail>ehiebent@blm.gov</cntemail>
      </cntinfo>
    </distrib>
    <distliab>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.</distliab>
  </distinfo>
  <metainfo>
    <metd>20120503</metd>
    <metrd>20131021</metrd>
    <metc>
      <cntinfo>
        <cntorgp>
          <cntorg>Bureau of Land Management, Oregon State Office</cntorg>
          <cntper>Roger Mills</cntper>
        </cntorgp>
        <cntpos>GIS Spec</cntpos>
        <cntaddr>
          <addrtype>mailing</addrtype>
          <address>P.O. Box 2965</address>
          <city>Portland</city>
          <state>OR</state>
          <postal>97208</postal>
          <country>US</country>
        </cntaddr>
        <cntvoice>(503) 808-6340</cntvoice>
        <cntfax>(503) 808-6419</cntfax>
        <cntemail>r2mills@blm.gov</cntemail>
      </cntinfo>
    </metc>
    <metstdn>FGDC Content Standard for Digital Geospatial Metadata</metstdn>
    <metstdv>FGDC-STD-001-1998</metstdv>
    <mettc>local time</mettc>
    <metsi>
      <metscs>Not Classified</metscs>
    </metsi>
  </metainfo>
</metadata>