BLM New Mexico Grazing Allotments Coverage from 1980s Digitization

ArcInfo coverage maps Bureau of Land Management grazing allotments across the state of New Mexico. Data collection began in the 1980s, with digitization from original case files and conversion to ArcInfo in the 1990s, culminating in a statewide merge in June 2000. The dataset is maintained by the BLM New Mexico offices and hosted by the University of New Mexico's Earth Data Analysis Center.

Use Cases

• Analyzing the spatial distribution and size of federal grazing allotments across New Mexico.
• Studying changes in land management policy and allotment boundaries from the 1980s to 2000.
• Integrating with other geospatial layers for environmental impact assessments on BLM-administered lands.

Strengths

• Data collection spans over two decades, from the 1980s through June 2000.
• Digitized from original BLM case files, providing a direct link to administrative records.
• Merged into a consistent statewide coverage, facilitating broad regional analysis.

Limitations

• Column names and specific attribute details are not provided by any source.
• Sources conflict on the last update date: one states June 2000, another lists December 2020, suggesting potential metadata inconsistency.
• The exact row count, file size, and data license are unknown.

Provenance

Source

U.S. Bureau of Land Management (BLM) in New Mexico.

Collection Method

Digitized from original case files using ADS software in the 1980s, later converted to ArcInfo in the mid-to-late 1990s.

Time Range

1980s to 2000-06-01

Freshness

2000-06-01 23:59:59.999000

Geography

State of New Mexico, USA.