angle for sluice box riffle
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When the box has finished running the gravel down onto the riffle area of the box, the space fills between the riffles, you can start to look for the last of the gravels to leave the front of the box
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The slope or angle of the sluice can be adjusted, by arranging rocks under the sluice Also the flow of water can be adjusted by placing a large rock in front of the intake end of the sluice, to divert some of the water around the box
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Water speed / velocity, angle / pitch of the sluice box, amount of water / water depth in sluice Why would we LUMP all of this together? Because in a way, it all works together and has the same impact “across the board” on all riffles, boxes, and behaviors
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– one inch high angle iron riffles need double quantity ie 4800 ls/min of water per width meter of sluice – the slurry flowing in the box should contain
