The idea behind the colors

Most map tools hand you raw layers and leave you to assemble a conclusion. The screening map does the opposite: it combines public claim, land-status, access, restriction, and historical-context data into a single rated candidate plot, so you can see where deeper research is worth doing at a glance. The color is a summary of that reasoning, and it is intentionally cautious.

What each color is for

By default the map shows green and yellow (the leads) and lets you turn on red and black (the audit layers) when you want to understand why ground was excluded.

What a color does not tell you

This conservatism is deliberate. The map is designed to produce fewer false "go" signals, to make uncertainty visible, and to treat "probably not worth pursuing" as a useful answer. A quiet map is doing its job.

How to use a color well

Treat green and yellow plots as a shortlist for the research workflow: confirm land and mineral status, read the existing claims, check withdrawals and closures, and confirm access — then verify the exact parcel and visit before you decide anything. Use red and black plots to learn why an area is a poor bet, which often teaches you more about a drainage than the green plots do.