Shown below is a graphic of the boundary for the Canyon of the Ancients National Monument, along with some quarter-quarter section lines.

The illustration above shows the reliability of GCDB data in and around the national monument.  The black section and quarter-quarter section lines are within 0 – 40 foot reliability.  The blue lines are within 41 – 200 foot reliability.  And the reliability of the red lines are 200 feet and greater.  For further discussion about reliability diagrams visit the GCDB National Home Page.

The Canyon of the Ancients GCDB reliability diagram demonstrates that:

1. management decisions made anywhere near the boundary should be made carefully, and where boundary and location are involved, decisions should be based on legal survey and markers, not on the map data.
2. the most unreliable areas are likely to be the highest priority for establishing new or updated GCDB information.