eng utf8 dataset dataset Geospatial Program Specialist BLM National Headquarters, HQ350 Geospatial Program Specialist

760 Horizon Drive Grand Junction CO 81506 US blm_mlrs@blm.gov

8:00 am to 5:00pm Monday-Friday pointOfContact 2023-07-25 ISO 19139 Geographic Information - Metadata - Implementation Specification 2007 geometryOnly composite 4269 EPSG 6.5(3.0.1) 2020-09-11 publication U.S. Department of the Interior, Bureau of Land Management (BLM) originator Bureau of Land Management publisher mapDigital This dataset contains mining claim cases with the case disposition (status) of closed that have been updated or modified within the last year from US Bureau of Land Management's, BLM, Mineral and Land Record System(MLRS). The BLM only requires that mining claims be identified down to the affected quarter section(s)—as such, that is what the MLRS research map and public reports will reflect, most commonly. Claim boundaries, as staked and monumented, are found in the accepted Notice/Certificate of Location as part of the official case file, managed by the BLM State Office having jurisdiction over the claim. The geometries are created in multiple ways but are primarily derived from Legal Land Descriptions (LLD) for the case and geocoded (mapped) using the Public Land Survey System (PLSS) derived from the most accurate survey data available through BLM Cadastral Survey workforce. Geospatial representations might be missing for some cases that can not be geocoded using the MLRS algorithm.  Each case is given a data quality score based on how well it mapped. These can be lumped into seven groups to provide a simplified way to understand the scores.Group 1: Direct PLSS Match. Scores “0”, “1”, “2”, “3” should all have a match to the PLSS data. There are slight differences, but the primary expectation is that these match the PLSS. Group 2: Calculated PLSS Match. Scores “4”, “4.1”, “5”, “6”, “7” and “8” were generated through a process of creating the geometry that is not a direct capture from the PLSS. They represent a best guess based on the underlining PLSS Group 3 – Mapped to Section. Score of “8.1”, “8.2”, “8.3”, “9” and “10” are mapped to the Section for various reasons (refer to log information in data quality field). Group 4- Combination of mapped and unmapped areas. Score of 15 represents a case that has some portions that would map and others that do not. Group 5 – No NLSDB Geometry, Only Attributes. Scores “11”, “12”, “20”, “21” and “22” do not have a match to the PLSS and no geometry is in the NLSDB, and only attributes exist in the data. Group 6 – Mapped to County. Scores of “25” map to the County. Group 7 – Improved Geometry. Scores of “100” are cases that have had their geometry edited by BLM staff using ArcGIS Pro or MLRS bulk upload tool. To geospatially represent mining claim case group data within Mineral and Land Records System (MLRS) that have been updated or modified within the last year. U.S. Department of Interior, Bureau of Land Management (BLM) underDevelopment Bureau of Land Management, HQ National Data Steward

760 Horizon Drive Grand Junction CO 81506 US blm_mlrs@blm.gov

8:00 am to 5:00pm Monday-Friday pointOfContact asNeeded Alabama Alaska Arizona Arkansas California Colorado Eastern States Florida Georgia Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maryland Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Mexico North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania South Dakota Tennessee Texas Utah Virginia Washington West Virginia Wisconsin Wyoming place Connecticut Delaware District of Columbia Maine Massachusetts New Hampshire New Jersey New York Rhode Island South Carolina Vermont place Authorization Energy Geology Geospatial Management Range theme land grid mining PLSS Public Land Survey System section township theme 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 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. These data may be updated by the BLM without notification. 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. otherRestrictions None, these data are considered public domain. vector eng utf8 boundaries geoscientificInformation planningCadastre Esri ArcGIS 12.9.4.32739 true -144.687984 121.042427 29.011024 49.000114 publication date 2020-09-11 true -124.694155 -81.638769 29.018648 49.000977 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. Enterprise Geodatabase Feature Class NOC Data Management Lead BLM National Operations Center, OC530 NOC Data Management Lead

Bldg 50, Denver Federal Center Denver CO 80225 US blm_mlrs@blm.gov

8:00 am to 5:00pm Monday-Friday distributor 2020-09-11T00:00:00 File geodatabase ArcGIS 10.4.1 https://navigator.blm.gov/ https://gis.blm.gov/nlsdb/rest/services/NLSDB/MapServer dataset The GIS data was originally created from the LR2000 database. Data is created using the most current CADNSDI data (Survey Grid) and the BLM LR2000 Case Recordation database legal land descriptions. New cases will be added to this dataset by BLM staff as created. The logical consistency of this dataset reflects that of the source database. The completeness of this dataset reflects that of the source database. This national dataset is an aggregation from multiple datasets provided, please call the distributor for additional information on provenance, history, accuracy and quality of the data. The positional accuracy across this dataset varies according to the source. Case groups were identified from the BLM NLSDB database using a BLM customized query of BLM Product. The current query is: CSE_DISP = 'Closed' AND BLM_PROD IN ('Lode Claim', 'Mill Site', 'Placer Claim', 'Tunnel Site') 2022-03-21T00:00:00 Geospatial Program Specialist BLM National Headquarters Geospatial Program Specialist

760 Horizon Drive Grand Junction CO 81506 US blm_mlrs@blm.gov

processor The accuracy and precision of the PLSS determines the spatial accuracy and precision of the final location of the geometry in the GIS layer. This official BLM Data Management handbook contains information about how data is administered, managed, and tracked. This handbook discusses how the BLM operates with regard to data development and design, quality, metadata, and business rules. The information this resource contains also pertains to geospatial data. 24000 BLM Mineral and Land Records System unknown Last metadata review date: 20200901