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  • Steven Allen October 20, 2016 at 11:54am

    Good link to the gravity dredge. I used a dam when I dredged in a narrow stream, the dam was about 5 feet high with a 8 inch plastic pipe at the bottom that was able to slide forward and back a bit with a 6 inch suction hose slipped into the pipe. with a wire ring across the intake to keep the over size rocks out of it. A sluice at the end. I did a quite a bit of it and had this dam and pipe system down pretty good and could dredge 60 feet out in front of the dam, then the dam had to moved forward for the next set. Steve

  • Victor Pellegrini October 10, 2015 at 12:37am

    Thanks nice web site

  • Steel Pan August 26, 2015 at 1:57pm

    No pics avail, but if you look at the pic in the link, just imagine a 3" nozzle at the bottom end.

    In my setup the pipework shown supplies water instead of a pump. The hose from the nozzle to the sluice box

    is run as normal.

    So,..... there's a dam, pipework, nozzle, hose to sluice.

  • cecil ccv-NC August 20, 2015 at 8:44pm
    Steel pan do you have any video or pictures of what you're talking about your Gravity dredge ?there it would be sure be nice to look at.
  • Steel Pan August 20, 2015 at 2:35pm

    That link provides some great info.

    My system uses a regular suction nozzle at the bottom of the pipe line.

    Aprox. 115' of drop.

    Starting with 400' of 3", reduced to 2.5" for 200', then reduced again to 1.5" to connect to the 3" nozzle.

    System develops aprox. 50 psi and really sucks.  ; )

  • cecil ccv-NC August 12, 2015 at 4:53pm
    I don't see any information showing up about the gravity dredge????
    • Kyle > cecil ccv-NC August 13, 2015 at 7:05am

      Wealth of information on everything gravity dredging in this link.

      It's really simple you just need sufficient slope and a decent amount of hose length with a reduction nozzle at the intake end to increase suction and the weight of the water acts like a giant syringe that functions better with more slope.

      • Dave Parks > Kyle August 15, 2015 at 2:57pm

        super, checked out your link. was informative and well written. may just give this a try. didn't know it had been around for so long.

        thank you very much. will let you know the outcome.

             Dave here

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