San Mateo County Survey Marker GIS Part 1- Purpose and Intended Use

This post explains the purpose and intended use of the San Mateo County (SMCO) survey marker GIS map and what kind of information can be found for monuments.

The GIS can be found here or through our Surveying and Map Checking website.

Default view of the SMCO Survey Marker GIS

Purpose & Intended Use

This is an ongoing inventory of survey monuments for the unincorporated areas of San Mateo County.  Some locations within City limits are available because we've chosen to crowd source some of the data.

It is meant to be a planning tool for San Mateo County Public Works projects as well as private surveys for firms wishing to participate.

It is not meant to be a precise network and is considered GIS grade.

Finding Survey Markers

This map acts much like any GIS when panning, zooming, and selecting objects.  Once you locate a point of interest, a single left click will open a window containing the unique data for that location.

Available Survey Marker Information

The minimum data we capture for each location include:

• Date collected
• Description
• Is it tagged?
• Tag number?

Additional notes can be added to further describe the survey marker or its location.

This GIS includes photos of the monuments as well and are found in the "Attachments" section of the window.

Typical data available and survey marker photo

Part Two: Tools and Instructions