Montana State Library 20250923 Helena, Montana Montana State Library Data are available in ESRI's geodatabase and shapefile formats. https://ftpgeoinfo.msl.mt.gov/Data/Spatial/MSDI/AdministrativeBoundaries/ Montana State Library https://mslservices.mt.gov/Geographic_Information/Data/DataList/datalist_Details.aspx?did={a43101d4-295a-4bcb-890c-3218abbda60e} The Tribal Nations Reservation Boundaries in Montana were digitized from the U.S. Geological Survey (USGS) 1:250,000 scale maps adjusted to be coincident with the Bureau of Land Management's Geographic Coordinate Database (GCDB) or the USGS 1:24,000 scale Digital Raster Graphics (DRGs). Where reservation boundaries are coincident with public land survey lines, they were copied from the BLM's GCDB. If boundaries were not coincident with GCDB lines, they were digitized on screen from the USGS DRGs. Reservation Boundaries will change as the GCDB is adjusted by the BLM and those data are imported into the Montana Cadastral Data Model. Tribal Nations Reservation Boundaries in Montana coincident with the BLM's GCDB or the USGS 1:24,000 scale Raster Graphics. The dataset now includes Off Reservation Trust Land from the U.S. Census Bureau that has been supplemented with Montana Department of Revenue owner parcels. For the mapping of Tribal Nations Reservations in Montana The Montana State Library and the MSDI supports a federated database approach to all MSDI layers. Montana defines a federated approach as a method that supports the integration and utilization of data from multiple data providers, while retaining the primary maintenance responsibility with the provider. Most of Montana's framework data model efforts have adopted a federated approach that leverages multiple data providers and thus multiple data maintainers. It is plausible that errors do exist and we welcome all corrections. If you do have a boundary update/correction/question please contact the Administrative Boundaries Data Coordinator. 20210625 publication date Complete As needed -114.959194 -104.415042 49.068887 44.890770 ISO 19115 Topic Category boundaries Montana Reservations Tribal Nations Montana Reservations Governmental Units Montana Tribal Reservations reservations tribal reservations reservations American reservations MSDI Montana Spatial Data Infrastructure Montana Administrative Boundaries Montana 2021 None Montana Tribal Nations Reservation data is best used in conjunction with the GCDB, or other data based on GCDB. DISCLAIMER: The Montana State Library Geographic Information Services provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time. Montana State Library Administrative Boundaries Framework Data Coordinator mailing address

P.O. Box 201800

Helena Montana 59620 United States 406-444-5354 Montana Relay 711 406-444-0266 geoinfo@mt.gov 8:00 to 5:00 US Bureau of Land Management, Geographic Coordinate Database, US Geological Survey 1:24,000 Digital Raster Graphics Complete as of 02/08/19 Varies on GCDB accuracy U.S. Bureau of Land Management Billings, MT U.S. Bureau of Land Management, Montana/Dakotas Cadastral Survey http://www.blm.gov/mt/st/en/res/public_room/cadastral_survey/gcdb.html online This is the source of all Montana Reservation lines that follow Public Land Survey lines. U.S. Geological Survey Helena, MT Montana State Library http://mslapps.mt.gov/Geographic_Information/Data/Topographic/Default.aspx 24000 online Montana Reservation lines that do not follow Public Land Survey lines were screen-digitized from these images. Montana Reservation boundaries when coincident with the PLSS were copied from original GCDB data downloaded from the Montana State BLM Office. Based on recent observations, this GCDB data varies somewhat from what is available at the Denver GCDB LSIS site and BLM needs to coordinate to ensure one standard version of GCDB. The boundaries that are not coincident with PLSS, rivers and other topographic features, were on screen digitized from the USGS raster graphics. Discrepancies were researched when encountered, however this is not meant to represent a legal survey of Montana Reservation boundaries. 2002-2003 Updated Crow Reservation Boundary 201711 Adjusted reservation boundaries to the November 2018 CadNSDI Montana (PLSS) 20190208 Reviewed and updated boundaries to follow the U.S. Census Bureau; Added a unique identifier (ID_UK); Aligned to the 2021 CadNSDI; Projected to NAD83 2011 20210625 Aligned to the 2025 CadNSDI 20250923 Vector G-polygon 7 NAD 1983 2011 StatePlane Montana FIPS 2500 45.0 49.0 -109.5 44.25 600000.0 0.0 coordinate pair 0.0001 0.0001 meter D NAD 1983 2011 GRS 1980 6378137.0 298.257222101 Reservations Reservation Boundaries of Montana SHAPE Feature geometry. ESRI Coordinates defining the features. NAME Reservation Name BMSC AIANNHCE10 PKEY ENTITY_ID DATASET_IDENTIFIER OBJECTID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. LAST_UPDATE SHAPE_Length Length of feature in internal units. Esri Positive real numbers that are automatically generated. SHAPE_Area Area of feature in internal units squared. Esri Positive real numbers that are automatically generated. ID_UK Montana State Library Administrative Boundaries Data Coordinator mailing address

P.O. Box 201800

Helena MT 59620 United States 406-444-5354 406-444-5354 Montana Relay 711 406-444-0266 geoinfo@mt.gov geoinfo@mt.gov 8:00-5:00 downloadable data This is not a survey product. No liability is assumed by the State of Montana for the use of this product ESRI File Geodatabase https://ftpgeoinfo.msl.mt.gov/Data/Spatial/MSDI/AdministrativeBoundaries/ 20250923 Montana State Library Administrative Boundaries Coordinator mailing address

PO Box 201800

Helena MT 59620 406-444-5354 Montana Relay 711 406-444-0266 geoinfo@mt.gov 8:00-5:00 FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 {341205DA-7668-4119-9D21-0D1C8AFCF5F1}