BLM Colorado
Land Ownership, SMA
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BLM Colorado, Land Ownership/Surface Management Agency



Bureau of Land Management, Colorado State Office, Geosciences Team
Publication_Date: Feb. 02, 2015 
Title: Statewide Colorado Land Ownership, Land Status
Geospatial_Data_Presentation_Form: vector digital data
Series_Name: BLM Colorado State Wide Geospatial Database
co_lst.shp = The name of the shapefile in this metadata documentation.
Publication_Place: Lakewood, Colorado
Publisher: BLM, Colorado State Office
History: 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 2014, 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.
To illustrate Land Ownership in Colorado in a digital form for map display and query.
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.
Calendar_Date: Dec. 19, 2014 
Currentness_Reference: publication date
Progress: Complete
Maintenance_and_Update_Frequency: Irregular
West_Bounding_Coordinate: -109.279633
East_Bounding_Coordinate: -101.868844
North_Bounding_Coordinate: 41.071873
South_Bounding_Coordinate: 36.926393
Theme_Keyword_Thesaurus: None
Theme_Keyword: Land Ownership
Theme_Keyword: Land Status
Theme_Keyword: Administration
Theme_Keyword: Boundaries
Theme_Keyword: Surface Management Agency
Place_Keyword_Thesaurus: None
Place_Keyword: Colorado
Access_Constraints: None, these data are considered pubic domain.
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.
Contact_Organization: Bureau of Land Management
Contact_Position: GIS Specialist
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
Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 10.2.1
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_Name: Statewide GIS Theme
Issue_Identification: co_lst.shp
Publication_Place: Lakewood, Colorado
Publisher: BLM Colorado State Office

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.
Polygon and Arc-Node topology present. Data checked and passed for topology errors.
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
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.
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
This dataset is in a multi editor environment. The dataset is snapped to GCDB using a custom script. Editors then use a Validate and Non Validate process to identify polygons that need additional snapping that were not within the snapping distance set in the script. GCDB is in a constant state of movement and updates. For this reason the script needs to be run about every month or so to keep vertically integrated with the GCDB. Once edits are made and posted there is another script that runs daily that dissolves the GCDB lines by the admn_code. The result is the final Land Ownership Status dataset.

Direct_Spatial_Reference_Method: Vector
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 13973
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 13961
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 14066
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 2030

Grid_Coordinate_System_Name: Universal Transverse Mercator
UTM_Zone_Number: 13
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_Encoding_Method: coordinate pair
Abscissa_Resolution: 0.000000
Ordinate_Resolution: 0.000000
Planar_Distance_Units: meters
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
Altitude_Resolution: 1.000000
Explicit elevation coordinate included with horizontal coordinates

Entity_Type_Label: co_lst
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Sequential unique whole numbers that are automatically generated.
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Unrepresentable_Domain: Coordinates defining the features.
Attribute_Label: objectid
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Sequential unique whole numbers that are automatically generated.
Attribute_Label: adm_code
Attribute_Label: adm_manage
Attribute_Label: adm_name
Attribute_Label: GlobalID
Attribute_Label: shape_area
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: ESRI
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute_Label: shape_len
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.

Resource_Description: Downloadable Data
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.
Transfer_Size: 8.766

Metadata_Date: 20150202
Bureau of Land Management, Colorado State Office, Geographic Sciences Team
Contact_Person: David Taylor
Contact_Position: GIS Specialist
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
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile

Generated by mp version 2.9.6 on Tue Jun 14 09:28:01 2011

Last updated: 02-03-2015