U.S. DEPARTMENT OF THE INTERIORBUREAU OF LAND MANAGEMENT
 
Print Page

lst_conflated_poly

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
Bureau of Land Management, Colorado State Office, Geosciences Team, Dave Taylor (ed.)
Publication_Date: 03112009
Title: lst_conflated_poly
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: BLM Colorado State Wide Geospatial Database
Issue_Identification:
lst24k_100k = The name of the ArcInfo "coverage" (post export) covered in this metadata file.
Publication_Information:
Publication_Place: Lakewood, Colorado
Publisher: BLM, Colorado State Office
Description:
Abstract:
The original data set consisted of a merge of 56 Colorado 1:100,000 scale land ownership maps that were digitized at the FWS. The hard copy maps/source materials were provided to the FWS by the BLM Colorado State Office. Data was originally obtained by the BLM is USGS DLG format. Individual quads were imported into the Automated Digitizing System (ADS) and reattributed using the most current source material at the time of conversion. Time was around 1994. At this time the BLM Colorado State Office was still on the Prime computers and this was where the data set resided in a converted MOSS format. MOSS files were then converted to UNIX Arc Info and merged into this data set.
Data were then integrated with 1:24,000 scale land ownership data that were gathered from BLM Colorado field offices through out the state where available. Data set now is a mix of scale, tolerances, and vintage, ranging from 1994 to 2006, line work ranging from GCDB to 24K to 100K map scale/land grid source. See "progress reports" in this metadata for more information on this subject. Also see "attribute section" for explaination of line work accuracy/vintage.
Purpose:
To illustrate Land Ownership in Colorado in a digital form for map display and query.
Supplemental_Information:
Edge tie errors may exsist. These edge ties concerns can only be resolved by the respective land management agencies (primarily the Bureau of Land Management). Data entry staff at the National Ecology Research Center have exceeded standard digitizing expectations by contacting many outside sources in attempts to resolve discrepancies in the paper maps. There are areas where the digital data do not match the paper maps because of more accurate information obtained from outside sources. If you have any concerns about differences between the digital and paper maps contact the Bureau of Land Management, Colorado State Office.
Historical Note: Data edge tie errors were not resolved while inserting the (more accurate) 24K data into the (less accurate) 100K. However the data should display just fine and the polygon to label point distribution is correct. Be aware of the little offsets (in the arcs) between the field data (more accurate) and the complete statewide land ownership (less accurate) coverage polygons. You can identify these arcs by selecting the arcs that have no attributes associated with them in the .aat feature attribute table info file.
Historical Claiification Note (as of July 2006): Data set has now been through many updates and format changes. The editing/update version of the data is now maintained in ArcSDE/Informix database format. Once editing is complete for a particular update session the data is exported to shape file format and served to general users and the public in that manner. Lines and Polygons are maintained in a ArcGIS geodatabase format with topology rules and domains. Line work has feature level metadata attached to it so the user of the data can determine the source and accuracy of the boundaries. Data was snapped to BLMs statewide GCDB survey grid on or about Oct. 2005. Line work that have blank attribute values are assumed to be snapped to this vintage of GCDB. As update cycles continue Line work will have populated attribute values that indicate the source and accuracy if that boundary. GCDB survey lines move and may have not existed at the time of snapping. As GCDB improves through time and this land ownership layer is updated to reflect those changes, the data will be more accurate. Lastly while working with this data set it has come to our attention that other land types such as forest service boundaries, private land, state lands, etc. may be missing or misplaced. The BLM lands are the most accurate in this layer at this time but even those lands have some problems. Be sure to read the process steps to see where we are at in the update quality control process.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 07222006
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -109.279633
East_Bounding_Coordinate: -101.868844
North_Bounding_Coordinate: 41.071873
South_Bounding_Coordinate: 36.926393
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Land Ownership
Theme_Keyword: Land Status
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Colorado
Access_Constraints: None
Use_Constraints:
Any hardcopies utilizing these data sets shall clearly indicate their source. If the licensee has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map. Licensee specifically agrees not to misrepresent these data sets, nor to imply that changes they made were approved by the Bureau of Land Management.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Bureau of Land Management
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: 2850 Youngfield Street
City: Lakewood
State_or_Province: CO
Postal_Code: 80215
Country: USA
Contact_Voice_Telephone: 303 239-3652
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.2.6.1500
Cross_Reference:
Citation_Information:
Originator:
United States Department of the Interior, Fish and Wildlife Service, National Ecology Research Center in cooperation with the Bureau of Land Management, Colorado State Office, Geosciences Team.
Publication_Date: 20020528
Title: Statewide Land Status Map (GCDB, 24k, 100k) version
Edition: 1st
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: Statewide GIS Theme
Issue_Identification: lst24k_100k
Publication_Information:
Publication_Place: Lakewood, Colorado
Publisher: BLM Colorado State Office

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Attribute accuracy is tested by manual comparisons of the source with hard copy plots and/or symbolized display of the Land Status on a interactive computer graphic system. Data was also compared to Master Title Plats and survey notes at the Bureau of Land Management.
Logical_Consistency_Report:
Polygon and Arc-Node topology present. Coverage checked and passed for topology errors.
Completeness_Report:
Data completeness for this data set reflects the content of the source graphic, MTPs, conversations with other land agencies, and survey notes. Features may have been eliminated or generalized on the source graphic due to scale and legibility constraints. Below is the original list of 100k Quads digitized for this project along with the Source date of the source material. Also listed are the dates, file names and descriptive name details of the field data inserted into this statewide coverage.
Quad Name Source Data
1. Alamosa 1988 2. Antonito 1987 3. Bailey 1985 4. Blanca Peak 1983 5. Bonney Reservoir 1978 6. Burlington 1982 7. Canon City 1988 8. Canyon of Ladore 1990 9. Carbondale 1988 10. Castle Rock 1984 11. Cheyenne Wells 1987 12. Colorado Springs 1982 13. Cortez 1984 14. Craig 1990 15. Del Norte 1984 16. Delta 1989 17. Denver East 1985 18. Denver West 1986 19. Douglas Pass 1989 20. Dove Creek 1988 21. Durrango 1984 22. Estes Park 1985 23. Eston 1983 24. Fort Collins 1988 25. Fort Morgan 1978 26. Glenwood Springs 1988 27. Grand Junction 1990 28. Greeley 1990 29. Gunnison 1989 30. Julesburg 1978 31. Karval 1987 32. Kim 1984 33. La Junta 1984 34. Lamar 1976 35. Las Animas 1990 36. Last Chance 1978 37. Leadville 1989 38. Limon 1985 39. Meeker 1990 40. Montrose 1988 41. Nucla 1989 42. Paonia 1989 43. Pikes Peak 1985 44. Pueblo 1982 45. Rangely 1989 46. Saguache 1988 47. Silverton 1990 48. Springfield 1975 49. Steamboat Springs 1988 50. Sterling 1976 51. Trinidad 1988 52. Two Buttes Reservoir 1975 53. Vail 1989 54. Walden 1989 55. Walsenburg 1983 56. Wray 1982
Below is the list of data inserted into this theme from BLM field offices.
File Name mm/yy BLM Field Office
lst100k 04/94 BLM Colorado State Office gj_lst 05/02 BLM Grand Junction Office gs_lst 04/02 BLM Glenwood Springs Office kr_lst 10/00 BLM Kremmling Office ls_lst 07/00 BLM Craig Office wr_lst 02/00 BLM Meeker Office mar_lst 05/02 BLM Montrose Office mr_lst 10/00 BLM Montrose Office rglst 06/01 BLM Canon City Office
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Referenced to USGS base map; however, does not register perfectly, because data were digitized off of paper quadrangle. In some cases data is referenced to GCDB Land Grid Published by BLM.
Lineage:
Source_Information:
Source_Scale_Denominator: 100K, 24K, and GCDB
Type_of_Source_Media: Paper USGS quads and Geographic Coordinate Data Base (GCDB)
Source_Citation_Abbreviation: None
Source_Contribution: Compiled by BLM Specialist
Process_Step:
Process_Description:
Original coverage were "lst100k" (see metadata on this coverage for process steps to this point). Editor for this coverage used BLM field office land ownership data and used the "erase" command with the "net" option in ArcInfo to create holes in the original data. Editor then used "mapjoin" with the "net" option to join the field office data to the statewide data. Editor then used the "dissolve" command with the "net" option to dissolve arcs between common attributed polygons.
Attribute schema had to be modified in the polygon table so land ownership attributes would have the same field names, field definitions, and attribute names.
Final coverage is a combination of many different BLM field office sources. The arc table were modified to maintain a feature base accuracy source attribute for each of the arcs in the final coverage.
Process_Date: 20020528
Process_Step:
Process_Description:
Data converted from ArcInfo coverage to ArcSDE 8.3 Geodatabase. Domain values added for polygon data and arcs. Topology Rules set in the geodatabase and data was validated. Update editing continued in the SDE environment.
During the editing and update cycle the editor keeped track of the boundaries by attributing the arcs with line source/feature level metadata. Topology rules were set so if a polygon boundary moved the arc moved with it. Also during this update cycle the editor incorporated many state land board features on a statewide bases.
Process_Date: 20041030
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Dave Taylor
Contact_Organization: BLM Colorado State Office
Contact_Position: IT/GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: 2850 Youngfield Street
City: Lakewood
State_or_Province: Colorado
Postal_Code: 80215
Country: USA
Contact_Voice_Telephone: 303 239-3652
Process_Step:
Process_Description:
Data was froze during this time period, and handed over to a private contractor. The contarctor was tasked to conflate the data to BLM's Geographic Coordinate Data Base (GCDB). Because of the difficulty of maintaining topology movement between the arcs and the polygons the contractor did not maintain the feature level metadata for the arcs.
Contractor provided the data back to BLM Colorado with polygon topology only in the form on a personal geodatabase. Data was conflated to GCDB survey grid dated 20051130
Process_Date: 20050230
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Dave Taylor
Contact_Organization: BLM Colorado State Office
Contact_Position: IT/GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: 2850 Youngfield Street
City: Lakewood
State_or_Province: Colorado
Postal_Code: 80215
Country: USA
Contact_Voice_Telephone: 303 239-3652
Process_Step:
Process_Description:
A minumum data quality check and validation from contractor, moved into a Arcinfo coverage model, build command was run on data. Data is clean to this point with no topology errors and ready to move data back into a SDE geodatabase. Data can also be exported to a shape file so it can be served to the public and other interested parties.
Process_Date: 20060103
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Dave Taylor
Contact_Organization: BLM Colorado State Office
Contact_Position: IT/GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: 2850 Youngfield Street
City: Lakewood
State_or_Province: Colorado
Postal_Code: 80215
Country: USA
Contact_Voice_Telephone: 303 239-3652
Process_Step:
Process_Description:
Attribute schema for polygons and lines were re-evaluated and changed to reflect national standards that the BLMs NILS office uses for their SMA layer.
Process_Date: 20060615
Process_Step:
Process_Description:
Updates recieved from BLM Grand Junction and implemented. Anticipate some more updates for the same area in the next month or so.
Process_Date: 20060718
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Dave Taylor
Contact_Organization: BLM Colorado State Office
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: 2850 Youngfield Street
City: Lakewood
State_or_Province: Colorado
Postal_Code: 80215
Country: USA
Contact_Voice_Telephone: 303 239-3652
Process_Step:
Process_Description:
Attribute values updated to reflect domain changes for CDOW State Lands. Editor found all values in the attribute table that had a value of CDW and switched those to Local/State, County, City; Wildlife, Park, and Outdoor Recreation Areas. In some cases polygons were adjusted to reflect geometery changes recieved from The State Land Board. These mostly occurred in the NW part of the State.
Be aware at the time of this posting in this process step that a statewide update of State/LOCAL Lands has not been completed and it is the feeling of this editor that there are lots of changes to geometry for these state lands classifications. We will try to incorperate more of these changes in the coming weeks. (ed; dtaylor)
Process_Date: 07222006
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Dave Taylor
Contact_Organization: BLM Colorado State Office
Contact_Address:
Address_Type: mailing and physical address
Address: 2850 Youngfield Street
City: Lakewood
State_or_Province: Colorado
Postal_Code: 80215
Country: USA
Contact_Voice_Telephone: 303 239-3652
Process_Step:
Process_Description:
Polygons updated on the default database. Database written to shape file. Updates from some field offices but not all.
Process_Date: 06212007
Process_Step:
Process_Description:
Polygons updated on the default database. Database written to shape file. Updates from some field offices but not all.
Process_Date: 11062007
Process_Step:
Process_Description:
Polygons updated on the default database. Database written to shape file. Updates from some field offices but not all.
Process_Date: 02122008
Process_Step:
Process_Description:
Polygons updated on the default database. Database written to shape file. Updates from some field offices but not all.
Process_Date: 02052009
Process_Step:
Process_Description:
Forest Service update in T 39 N, R 8 W, Sec. 6 & 7. Land Boundary snapped to 2008 GCDB Survey Lines. Forest Service update is T 36 N, R 9 W, Sec 33. Land Boundary snapped and adjusted to 2008 GCDB Survey Lines and refrenced BLM MTP.
Process_Date: 03102009
Process_Step:
Process_Description:
Several updates within the BLM White River Field Office Area. Adjusted Land Boundaries to 2008 GCDB while referencing MTPs and 2008 State Wildlife Areas.
Exported SDE database to shapefile, ran check geometry, shapefile had no errors. Deleted SDE Perimeter and Area fields, Added shapefile Areas, Perimeter, and Acres Fields and Populated those Fields using calculator.
Process_Date: 03112009 

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 13873
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 13961
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 14066
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 2030

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 13
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -105.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000000
Ordinate_Resolution: 0.000000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Resolution: 0.000010
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: lst_conflated_poly
Attribute:
Attribute_Label: FID
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: adm_code
Attribute:
Attribute_Label: adm_manage
Attribute:
Attribute_Label: adm_name
Attribute:
Attribute_Label: Perimeter
Attribute:
Attribute_Label: Area
Attribute:
Attribute_Label: Acres
Overview_Description:
Entity_and_Attribute_Overview:
The Polygon Feature Class contains 3 user defined fields and are described below...
 
admin_code: Is a domain field and restricted to the following values:
 
BLM = Bureau of Land Management
USFS = US Forest Service
USFS_LU = US Forest Service (Bankhead Jones Land Use Lands)
USFW = US Fish and Wildlife Service
BIA = Indian Reservation
LOCAL = State, County, City; Park and Outdoor Recreation Areas
SWA = State Wilderness Areas
BOR = Bureau of Reclaimation
DOD = Department of the Defense
NPS = National Park Service
PRI = Private
STA =State
OTHER = Other Federal Land
USFS_NG = US Forest Service National Grasslands

admin_manager: Is a non domain field and describes what or who manages the land. For the most part this field will be empty. If the field is empty the user of this data can assume that the manager is also the owner.

admin_name: Is a non domain field that describes the administrative name of the polygon/area if interest.

Distribution_Information:
Resource_Description: Downloadable Data
Distribution_Liability:
The Bureau of Land Management (BLM) provides these geographic data "as is." BLM makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. BLM further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. 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, 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 use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by BLM.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 8.766

Metadata_Reference_Information:
Metadata_Date: 20090306
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Bureau of Land Management, Colorado State Office, Geographic Sciences Team
Contact_Person: David Taylor
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: 2850 Youngfield Street
City: Lakewood
State_or_Province: Colorado
Postal_Code: 80215
Contact_Voice_Telephone: (303) 239-3652
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile

Generated by mp version 2.9.6 on Fri Mar 06 16:13:20 2009

 
Last updated: 03-31-2009