Database of those streams, creeks, or rivers that been tested for their gold yield?

[RKW]

I was recently watching a episode of "Lost Gold" and the characters in the show were testing various creeks to determine if they showed any "color". They were trying to research a treasure legend and were panning the local creeks to eliminate those creeks that had no appreciable gold, the idea being those creeks that were a bust were probably not associated with the location of the treasure legend. Anyway, it occurred to me that there might be a database, either formal (like a USGS type thing) or informal. Anyone know of such a critter?

 

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In general, this one has been very useful: https://www.mindat.org

 

[RKW]

Thanks. Yes that is helpful. I also found this one, https://thediggings.com/

And for the state of Arizona this one is also helpful, https://azgs.arizona.edu/minerals/gold-prospecting-arizona