Spatial Data Management System
Welcome to the Bureau of Land Management's Spatial Data Management System (SDMS). This website provides access to on-line BLM-Alaska land record documents, reports, and an interactive web map application.
- Alaska Case Reporting Enterprise System (ACRES)
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The ACRES reports contain BLM Alaska case information up to October 4th, 2024. Reports include native, state and private land conveyance cases, as well as, leases, permits, federal mining claims, easements and more.
As of October 15, 2024: ACRES has been migrated to the Mineral & Land Records System (MLRS). Access MLRS reports at https://reports.blm.gov/reports/mlrs to obtain the most recent BLM Alaska case information. - Lands, Minerals, and Realty (LMaR) Interactive Map
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The Lands, Minerals, and Realty interactive map provides access to multiple geospatial layers including: mining claims, mining plans, conveyed lands, selected lands, withdrawals, easements and more. Layers within the map provide direct hyperlinks to case information, master title plats, historical indexes, survey information, and mining information.
- Conveyance Documents
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Scanned images of BLM Alaska land conveyance documents including: Patents, Tentative Agreements and Interim Conveyances issued since 1965.
- Master Title Plats
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Scanned images of BLM Alaska MTPs. These maps portray the Bureau's record of current federal land ownership and land status.
- Survey Plats
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Scanned images of Cadastral land survey plats and field notes.
- ANCSA 17(b) Easement Maps
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Scanned images of federal easements across native lands, presented on USGS quadrangles.
- Alaska Public Laws, Orders and Directives Online
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Scanned images of federal Alaska Public Laws, Orders and Directives.
Please note that the on-line data and documents available through this site do not constitute nor replace official legal records, documents or case files. Refer to specific records on file at BLM for official record information.
Please review Disclaimer, Privacy Policy and Social Media Policy for terms and conditions for use of this site.
For land records issues, please contact the BLM Alaska Public Information Center at (907) 271-5960 or email: BLM_AK_AKSO_Public_Room@blm.gov.
For any issues using SDMS in your web browser, please use the FAQ link.
To share feedback with the SDMS developers, please use the Feedback link or email BLM_AK_AKSO_Data_Management_Webapps@blm.gov.