The Public Land spatial data sets (shapefile) contains Public Land Survey section polygons that had mining claims recorded in the U.S. Bureau of Land Management's LR2000 database as of December 31, 2010 (from a March 1, 2011 data extraction) for the period from 1976 to 2010 in Arizona, Arkansas, California, Colorado, Florida, Idaho, Montana, Nebraska, New Mexico, Nevada, North Dakota, Oregon, South Dakota, Utah, Washington, and Wyoming. Alaska was not updated in version 4.
This set of spatial databases was designed to be used with the U.S Bureau of Land Management LR2000 database. Each shapefile contains a field, MTRS, which allows linking information in the LR2000 case_tbl and case_land tables. However, it is only valid for data extracted from the LR2000 database on March 1, 2011, since the database is dynamic and new information may have been added after that date, or older information corrected.
Shapefile names for the individual states are: ak_pls_07, az_pls_10 (Arizona), ar_pls_10 (Arkansas), ca_pls_10 (California), co_pls_10 (Colorado), fl_pls_10 (Florida), id_pls_10 (Idaho), mt_pls_10 (Montana), ne_pls_10 (Nebraska), nm_pls_10 (New Mexico), nv_pls_10 (Nevada), or_pls_10 (Oregon), sd_pls_10 (South Dakota), ut_pls_10 (Utah), wa_pls_10 (Washington), and wy_pls_10 (Wyoming).
Theme_Keyword: Mining claim
Theme_Keyword: Public Land Survey
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Place_Keyword: New Mexico
Place_Keyword: South Dakota
Place_Keyword: United States
These spatial databases are not meant to be used or displayed at any scale larger than 1:100,000 (for example, 1:24,000). Any hardcopies utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, they are obligated to describe the types of modifications they have performed on the hardcopy map. User specifically agrees not to misrepresent these data sets, nor imply that changes they made were approved by the U.S. Geological Survey.
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