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The BLM has extensive current and historical information about land ownership and use in the United States. The agency maintains cadastral survey and historical data on lands patented, along with information on the mineral estate, resource conditions, and permits or leases on Federal lands. BLM is also a major user of geographic information systems (GIS) to analyze the data for millions of acres of public lands.
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BLM Chief Cadastral Surveyor: Don Buhler
Geographic Information Science: Ed Harne
BLM NATIONAL WEB PAGES
Land Survey Information National Home Page
BLM's "GeoCommunicator" website is a collection of geographic information from BLM's Geographic Coordinate Data Base (GCDB) representing the Public Land Survey System (PLSS) of the United States. The information is available to download free of charge. This ongoing project will eventually include PLSS data from alternate GIS sources, including county governments.
http://www.geocommunicator.gov/lsi/
National Cadastral Surveying Page
The BLM is the Federal Government's official record keeper for over 200 years' worth of survey records. Find out about what's involved in this daunting task.
http://www.blm.gov/cadastral/
Surveyor Career Page
Find out how to become a BLM cadastral surveyor.
http://www.blm.gov/cadastral/scep.htm
GIS: A New Way to See
Science & Children article that introduces Geographic Information Systems (GIS) and their applications to natural resources decision making; includes classroom activities.
http://www.blm.gov/education/00_resources/articles/gis/index.html
BLM Public Lands and Administrative Jurisdictions
Individual state map files in Acrobat pdf format as well as digital data in ArcInfo export coverages and ArcView Shape files (zipped).
http://www.blm.gov/nstc/jurisdictions/index.html
BLM STATE OFFICE PAGES
ALASKA Division of Cadastral Survey and Geomatics
Includes links to the history of surveying in Alaska up to the present day.
http://www.ak.blm.gov/ak920/
ARIZONA Cadastral Survey Information, Services and Contacts
http://www.az.blm.gov/cadastral/cadhome.html
Maps, Plats, and GPS Data
http://www.az.blm.gov/maps.htm
Surveying Our Public Lands:
Booklet describing the surveying process, with illustrations.
http://www.az.blm.gov/cadastral/manual/surveying_our.pdf
CALIFORNIA Branch of Geographic Services
Historical information on General Land Office boundaries in California; online meridian map of the U.S.
http://www.ca.blm.gov/cadastral/index.html
COLORADO Cadastral Survey Home Page
http://www.co.blm.gov/cadastral/cadhome.htm
The 14 Steps in Cadastral Survey
Illustrated description of the 14 steps that BLM must follow to complete a formal survey. The icons describe each step in detail.
http://www.co.blm.gov/cadastral/cadintronf.htm
Geospatial Data and Metadata On Line for BLM Colorado
Geographic information system (GIS) data have been collected and are used to support BLM base mapping needs and resource management programs; includes online maps.
http://www.co.blm.gov/metadata/cothemes.htm
EASTERN STATES Cadastral Home Page
Eastern States protects the vital records of the original surveys and both private and public rights by locating boundaries. This office also assists in the development of software and data to provide for digitally accessible records and enhanced retracement surveying.
http://www.es.blm.gov/programs/cadastral/index.html
IDAHO Cadastral Survey Home Page
http://www.id.blm.gov/cadastral/
MONTANA Cadastral Survey Home Page
Includes links to historical cadastral surveying photos and state maps through GDCB.
http://www.mt.blm.gov/cadastral/index.html
NEVADA Cadastral Surveying Home Page
http://www.nv.blm.gov/cadastral/Default.htm
Nevada Popular Map and Print Files:
Extensive collection of online maps
http://www.nv.blm.gov/gis/popular_maps.htm
NEW MEXICO Cadastral Services/Geographic Sciences Home Page
http://www.nm.blm.gov/www/nmso/nm_952/cadastral/cadastral_home.htm
BLM New Mexico Geosciences
GIS data files, plot files, and map files
http://www.nm.blm.gov/www/nmso/nm_952/geo_sci/blm_nm_geosciences.htm
OREGON Branch of Geographic Sciences
Links to online survey data for Oregon, listing of current survey and mapping projects, and aerial photography.
http://www.or.blm.gov/OR957/index.htm
Educational and outreach programs in surveying and mapping
Ranging from basic to technical training.
http://www.or.blm.gov/OR957/GeoSci/instruct.htm
UTAH Cadastral Survey Home Page
http://www.blm.gov/utah/geosciences/Cadastral.html
WYOMING Geographic Information Systems Site
Links to GIS data, current projects, and images of maps
http://www.wy.blm.gov/gis/indexgis.html
National Historic Trail
Detailed "viewshed" maps of the National Historic Trail in Wyoming.
http://www.wy.blm.gov/gis/mapsgis.htm