Sluice Box for gold, most use them in rivers and creeks. However, if you happen to find yourself in a location with no water and you have to bring the water in, you would want to consider a recirculating sluice box set up.

The water flowing through the sluice box separates the gold from the lighter material by washing away the mucky clay or dusty dirt that your gold happens to be hiding in.  

A regular sluice box is placed in a stream that's usually held down by rocks. If you don't have a stream nearby you can opt for a recirculating sluice box set up to keep the water you bring out recirculating. 

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