ESRI File Geodatabase
Tags
USDI, BLM, CA, Federal Lands, Land Surface Management, Acquired Lands, Land Acquistions, Bureau of Land Management
This data is provided for the public use. It is intended to represent Federally acquired lands in California and portions of northwestern Nevada.
This layer is updated as Lands are acquired by BLM and entered into the Bureau Master Title Plats and Legacy Rehost System (LR2000), and includes the serial number associated with each acquisition. This layer is also updated whenever BLM is notified that Lands have been acquired by other Federal Agencies. For addtional information regarding an acquistion search the Bureau's LR2000 system:
and the Bureau's General Land Office Records:
http://www.glorecords.blm.gov/search/default.aspx#searchTabIndex=1
This data has been maintained since 2000. Acquistions prior to 2000 are gradually being added as part of the Bureau's ongoing Land Records Data Quality Clean up efforts.
The source geometry is from California BLM LND_SurfaceEstate data which illustrates the location of Federal and State managed lands in California and portions northwest Nevada. The data is developed and maintained at the BLM California State Office in Sacramento. Data development efforts focus on accurately depicting the locations of BLM managed lands. Private and non-governmental lands are categorized as unclassified. Other Federal agencies, the State of California , and numerous County governments contribute much of the information and data incorporated into this geodatabase. Data for lands in Nevada were obtained from the Bureau of Land Management, Reno, Nevada.
BLM California State Office, Mapping Sciences Sacramento, CA
These data are provided by Bureau of Land Management (BLM) “as is” and might 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 sources from which they were derived, and both scale and accuracy may vary across the data set. These data might 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.
These data are for general purposes related to Geographic Information System and mapping applications at small to intermediate geographic scales. Users are cautioned that digital enlargement of these data to scales larger than that at which they were originally mapped can cause misinterpretation. Users are further cautioned that these data and interpretations derived from them do not eliminate the need for onsite survey and evaluation of specific sites.
Extent
| West | -124.51466 | East | -113.498267 |
| North | 42.072991 | South | 32.423561 |
| Maximum (zoomed in) | 1:5,000 |
| Minimum (zoomed out) | 1:50,000 |
The LND_SurfaceEstate data is edited and maintained in a single polygon feature class. Whenever possible, BLM lands are constructed from the Public Land Survey System (PLSS), also available to the public (PublicLandSurvey.gdb). Alignment of BLM data with the PLSS is a continual process, as the accuracy and density of PLSS data continues to improve and develop. Issues of misalignment with the PLSS are more common with non-BLM management areas. These discrepancies are being addressed at the BLM California State office based on U.S. Department of Interior priorities throughout the State of California.
BLM California State Office, Mapping Sciences Sacramento, CA
Updated frequently and as required
These data are provided without the approval of the Director of the U.S. Bureau of Land Management and no warranty expressed or implied is made regarding the accuracy, completeness, or utility of these data, nor shall the act of distribution constitute any such warranty. Any conclusions drawn from the use or misuse of these data are soley the responsibility of the user and the U.S Bureau of Land Management shall not be held liable for such use. This disclaimer applies both to individual use of these data and aggregate use with other data.
None - Though Subject to Cost Recovery Rules
These data are provided by Bureau of Land Management (BLM) “as is” and might 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 sources from which they were derived, and both scale and accuracy may vary across the data set. These data might 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.
These data are for general purposes related to Geographic Information System and mapping applications at small to intermediate geographic scales. Users are cautioned that digital enlargement of these data to scales larger than that at which they were originally mapped can cause misinterpretation. Users are further cautioned that these data and interpretations derived from them do not eliminate the need for onsite survey and evaluation of specific sites.
Polygons are checked to be sure all polygons have at least one set of attributes, and no more than one set of attributes. Polygon edges are examined to be sure that they close correctly.
Topology rules
Topology checks run on dataset as part of edit process.
Updates emphasize BLM ownership. Other ownership categories will be updated as opportunities become available.
Users report any discrepancies found.
Data updated whenever discrepancies are found.
Accuracy is evaluated primarily through use of the data, and at the time the data is updated or otherwise edited.
Users report any problems found with attribute accuracy.
Attributes updated whenever problems found. Edits involve detailed research into attributes and geometry updates.
View representing lands acquired by BLM in California and NW Nevada. This is a view of data located in from BLM CA LandSurfaceEstate dataset. Based on an inner join to vwLND_AcquisitionsCases for all records where values in the Acuqistion_ID equal those in the LND_Acquistion_ID field in vwLND_AcquistionCases. The CaseNumber field is a concatenation of values in fields from LandAcquistions_tbl.
Feature Class Name
BLM
Feature geometry.
ESRI
Coordinates defining the features.
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
CaseNumber code generated from an acquisition table maintained at the BLM, California State Office
BLM, California State Office
Unique serial numbers that are automatically generated.
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.
Area of feature in internal units squared.
Esri
Positive real numbers that are automatically generated.