The California Gold Rush miners used hydraulic mining to wash gold from the hillsides.
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Q20: Meanders only develop in low-gradient streams.
Q21: Seasonal floods are more dangerous than flash
Q22: Many major world cities are located on
Q23: It is not possible to tell whether
Q24: High-gradient streams occur on the floodplains of
Q26: A first-order stream has no tributaries.
Q27: Water diversions by people can create anthropogenic
Q28: Australia has the largest internal drainage basins
Q29: Which is not one of the pros
Q30: Stream capacity refers to the amount of
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