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U.S. DEPARTMENT OF THE INTERIOR

BUREAU OF LAND MANAGEMENT

Oregon / Washington

GIS Metadata


BLM OR Aerial Photography Boundaries Polygon

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Bureau of Land Management, Oregon State Office
Publication_Date: 20100101
Title:
BLM OR Aerial Photography Boundaries Polygon
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage: http://www.blm.gov/or/gis/data.php
Description:
Abstract:
ap_boundaries_poly: Polygon feature of aerial photography project boundaries for BLM aerial photo projects in the states of Oregon and Washington. Individual polygons were created by buffering the flight lines of the project from the photo center based on the image footprint at the nominal scale of the photography. This is intended as an interim dataset that is subject to update at a future point.
Purpose:
This feature is intended to facilitate the location and identification of BLM flightline data in Oregon and Washington for release to BLM district personnel, other agencies, and the general public.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19540701
Ending_Date: 20130831
Currentness_Reference:
publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -125
East_Bounding_Coordinate: -116
North_Bounding_Coordinate: 49.5
South_Bounding_Coordinate: 41.5
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115
Theme_Keyword: imageryBaseMapsEarthCover
Theme:
Theme_Keyword_Thesaurus: BLM
Theme_Keyword: Management
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Aerial Photography
Theme_Keyword: Land Use Planning
Theme_Keyword: Photogrametry
Theme_Keyword: Flightlines
Place:
Place_Keyword_Thesaurus: BLM-State
Place_Keyword: Oregon
Place_Keyword: Washington
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 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.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Bureau of Land Management
Contact_Person: Corey Plank
Contact_Position: Lead Cartographer
Contact_Address:
Address_Type: mailing
Address:
P.O. Box 2965
City: Portland
State_or_Province: OR
Postal_Code: 97204
Country: US
Contact_Voice_Telephone: (503) 808-6145
Contact_Electronic_Mail_Address: cplank@blm.gov
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.3.1.1850
Cross_Reference:
Citation_Information:
Originator: Bureau of Land Management, Oregon/Washington State Office
Publication_Date: 20100101
Title:
BLM OR Aerial Photography Flightlines Line
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage: http://www.blm.gov/or/gis/data.php
Cross_Reference:
Citation_Information:
Originator: Bureau of Land Management, Oregon State Office
Publication_Date: 20100101
Title:
BLM OR Aerial Photography Centers Point
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage: http://www.blm.gov/or/gis/data.php
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The boundary layer is based on the photo center layer so is no more accurate than the photo centers. Accuracy varies depending on ground terrain. When the camera is closer to the ground, the image will be larger and cover less area than when the camera is farther from the ground. The area covered by one photo is based on the average above ground elevation of the plane and assumes flat ground.
Logical_Consistency_Report:
Not applicable.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
90% of the centerpoints are within 400 feet of their actual position.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Explanation:
Based on an estimate of the amount of error expected in eyeballing and digitizing.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Not applicable.
Lineage:
Process_Step:
Process_Description:
Flight lines of individual projects were bufferred by half the photo footprint distance. Field names were standardized (given common names). Data was projected to GCS North American 1983 Datum. Individual polygons were appended from individual files to polygon feature class.
Process_Date: 20120423
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Bureau of Land Management, Oregon State Office
Contact_Person: Eric Hiebenthal
Contact_Position: GIS Data Management Specialist
Contact_Address:
Address_Type: mailing
Address:
P.O. Box 2965
City: Portland
State_or_Province: OR
Postal_Code: 97208
Country: US
Contact_Voice_Telephone: 503-808-6565
Contact_Facsimile_Telephone: 503-808-6419
Contact_Electronic_Mail_Address: ehiebent@blm.gov
Process_Step:
Process_Description:
Inclusion of data from the recent imagery over the Douglas Complex and Big Windy Fires.
Process_Date: 20130925
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Bureau of Land Management
Contact_Person: Corey Plank
Contact_Position: Lead Cartographer
Contact_Address:
Address_Type: mailing
Address:
P.O. Box 2965
City: Portland
State_or_Province: OR
Postal_Code: 97208
Country: US
Contact_Voice_Telephone: (503) 808-6145
Contact_Electronic_Mail_Address: cplank@blm.gov
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 542
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 542
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: AP_Boundaries_Poly
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition:
Internal feature number.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition:
Feature geometry.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Coordinates defining the features.
Attribute:
Attribute_Label: Shape_Length
Attribute_Definition:
Length of feature in internal units.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: Shape_Area
Attribute_Definition:
Area of feature in internal units squared.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: Proj_name
Attribute_Definition:
Project code used as a unique identifier.
Attribute_Definition_Source:
BLM
Attribute:
Attribute_Label: District
Attribute_Definition:
BLM District project is located within.
Attribute_Definition_Source:
BLM
Attribute:
Attribute_Label: FlightDate
Attribute_Definition:
Dates of aerial photography
Attribute:
Attribute_Label: Film_Location
Attribute_Definition:
Current location of film storage.
Attribute_Definition_Source:
BLM
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NOC
Enumerated_Domain_Value_Definition:
Bureau of Land Management National Operations Center (Denver)
Enumerated_Domain:
Enumerated_Domain_Value: APFO
Enumerated_Domain_Value_Definition:
US Department of Agriculture Aerial Photography Field Office (Salt Lake City)
Attribute:
Attribute_Label: film_type
Attribute_Definition:
Type of film used in project. Types of film include 
Attribute_Definition_Source:
BLM
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: B/W
Enumerated_Domain_Value_Definition:
Black & White film
Enumerated_Domain:
Enumerated_Domain_Value: NC
Enumerated_Domain_Value_Definition:
Natural Color film
Enumerated_Domain:
Enumerated_Domain_Value: CIR
Enumerated_Domain_Value_Definition:
Color Infrared film
Enumerated_Domain:
Enumerated_Domain_Value: RGB
Enumerated_Domain_Value_Definition:
3 band digital (red, green, blue)
Enumerated_Domain:
Enumerated_Domain_Value: RGBI
Enumerated_Domain_Value_Definition:
4 band digital (red, green, blue, near infrared)
Attribute:
Attribute_Label: Sq_Miles
Attribute_Definition:
Area of project boundary in square miles as calculated in UTM.
Attribute_Definition_Source:
BLM
Attribute:
Attribute_Label: Project_Year
Attribute_Definition:
Base year of flights
Attribute_Definition_Source:
BLM
Attribute:
Attribute_Label: Scan_Resolution
Attribute_Definition:
Nominal dots per inch measurement of project if available in digital format
Attribute_Definition_Source:
BLM
Attribute:
Attribute_Label: Project_Type
Attribute_Definition:
Basic flight layout
Attribute_Definition_Source:
BLM
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Block
Enumerated_Domain_Value_Definition:
area coverage with adjoining flightlines
Enumerated_Domain_Value_Definition_Source:
BLM
Enumerated_Domain:
Enumerated_Domain_Value: Linear
Enumerated_Domain_Value_Definition:
single line width covering straight segments
Enumerated_Domain_Value_Definition_Source:
BLM
Enumerated_Domain:
Enumerated_Domain_Value: Riparian
Enumerated_Domain_Value_Definition:
stream coverage with single line width
Enumerated_Domain_Value_Definition_Source:
BLM
Enumerated_Domain:
Enumerated_Domain_Value: Spot
Enumerated_Domain_Value_Definition:
spot shot
Enumerated_Domain_Value_Definition_Source:
BLM
Attribute:
Attribute_Label: Description
Attribute_Definition:
Project Description
Attribute_Definition_Source:
BLM
Attribute:
Attribute_Label: Notes
Attribute_Definition:
Additional information about the project
Attribute_Definition_Source:
BLM
Attribute:
Attribute_Label: Photo_scale
Overview_Description:
Entity_and_Attribute_Overview:
Project boundaries are in a polygon feature class, created from digital point files.
Entity_and_Attribute_Detail_Citation:
The project boundary is created in ArcMap by buffering the flight lines of the project.  The buffered area around each flight line simulates the size of a line of overlapped photos, taking into consideration the scale of the photography and the length of the camera lens.  Since sidelap and endlap are required, the rows of flight line boundaries merge to form one project boundary with all interior boundaries lines dissolved.
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Bureau of Land Management, Oregon State Office
Contact_Person: Eric Hiebenthal
Contact_Position: GIS Data Management Specialist
Contact_Address:
Address_Type: mailing
Address:
P.O. Box 2965
City: Portland
State_or_Province: OR
Postal_Code: 97208
Country: US
Contact_Voice_Telephone: 503-808-6565
Contact_Facsimile_Telephone: 503-808-6419
Contact_Electronic_Mail_Address: ehiebent@blm.gov
Resource_Description: Downloadable Data
Distribution_Liability:
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.
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Metadata_Reference_Information:
Metadata_Date: 20120503
Metadata_Review_Date: 20131021
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Bureau of Land Management, Oregon State Office
Contact_Person: Roger Mills
Contact_Position: GIS Spec
Contact_Address:
Address_Type: mailing
Address:
P.O. Box 2965
City: Portland
State_or_Province: OR
Postal_Code: 97208
Country: US
Contact_Voice_Telephone: (503) 808-6340
Contact_Facsimile_Telephone: (503) 808-6419
Contact_Electronic_Mail_Address: r2mills@blm.gov
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Security_Information:
Metadata_Security_Classification_System: Not Classified
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