A borehole is a general term for any narrow shaft drilled in the ground, either vertically or horizontally.

A borehole may be constructed for many different purposes, including:

  • extraction of water or fluid (e.g., oil) or gases (e.g., natural gas or methane)
  • for a geotechnical investigation
  • for an environmental site assessment
  • for mineral exploration
  • as a pilot hole for installing piers or underground utilities

This data contains a continuous log of strata for each borehole as well as for geocolumns.

A geocolumn is a collection of information from an examination of exposed substrate, such as in a quarry wall or along a roadway passage.

Ministry contact:

Additional information

Geographic coverage
Last Validated Date
July 3, 2024
Update frequency


Learn more about accessing data using different formats.

Date range: May 1, 1875 - January 1, 2012

  • ZIP English

    Last Updated: August 30, 2018

  • ZIP

    Last Updated: August 30, 2018


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