![]() ![]() The streams that do have been mined repeatedly, creating cycles of mining disturbance. Given the recent trend in gold prices, this could happen again. In the past, on average CDFG issued about 3400 permits per year although nearly 18,000 were issued in 1980 when gold prices were high. Because of this, dredge miners must obtain a permit from the California Department of Fish and Game (DFG) for about the cost of a fishing license. The problem is that suction dredging in streams can harm fish and fisheries, especially salmon and steelhead. So why is there a moratorium on suction dredging in California? A diver vacuums the stream bottom with the hose and the material is flushed into and through the sluice box where the heavier material, including gold, is collected. The device basically is a floating sluice box equipped with a gas-powered pump that sucks up water and gravel through a hose. A few folks go to a stream on a nice summer day with a portable device to suck tiny amounts of gold out of a stream bottom. ![]() Suction dredging seems like a fairly innocent pastime.
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