Building Your Own Gold Highbanker

Build Your Own Gold Highbanker

A sluice box freed from the riverbank. Add a pump, a hopper, and adjustable legs, and you can work bench gravels that haven't been touched since the river left them.

$150–$300 Total Build Cost | 2 GPM Minimum Water Flow | 3–4" Drop Per Foot | 100+ Buckets/hr Capacity

Most people assume that working gold-bearing gravel means staying right at the water's edge with a hand sluice. It doesn't have to. A highbanker is really just a sluice box that's been given legs and its own water supply, which means it can work bench gravels left high and dry by river erosion, terraces above stream level, and dry gullies near seasonal water — deposits that early miners often couldn't touch because they lacked the pumping equipment to reach them. The tradeoff is that it needs almost as much water as a regular sluice and a motor and pump to get that water there, but for a weekend prospector willing to run a small bilge pump off a battery, that tradeoff opens up the most productive and least-worked terrain along a historic river valley.

What makes it realistic for a beginner is that a highbanker is, structurally, just a hand sluice with two things added: a feed box with a grizzly screen on top, and adjustable legs underneath. If you've already built a sluice box, you're most of the way there — the new engineering decisions are mostly about water: which pump to run, how much flow you actually need, and whether to recirculate when water is scarce. Below are the build references, pump-selection guides, and community resources worth reading before you commit to a pump.

BUILD GUIDES & SOURCE PLANS

• Nevada Outback Gems — Design and Build Your Homemade Highbanker — nevada-outback-gems.com — The primary reference, from the same prospector-author behind the hand sluice plans. Covers feed box construction, converting an existing sluice into a highbanker, pump selection, and grade setup.

• Nevada Outback Gems — Plan, Design and Build a Homemade Gold Sluice Box — nevada-outback-gems.com — The essential companion piece. The sluice portion of a highbanker is essentially this same design with legs and a front baffle added, so it's worth building (or at least reading) first.

• Nevada Outback Gems — How to Use a Sluice Box to Find Gold — nevada-outback-gems.com — Operating guidance that applies directly to the highbanker's sluice section: setting slope, reading material flow, and cleanup timing.

PUMP SELECTION & WATER SYSTEM

• Crux Prospecting — Highbanker Water Pump FAQ — cruxprospecting.com — A detailed breakdown of GPH requirements, the difference between 12V bilge pumps and gas pumps, expected runtime per battery charge, and why lead-acid batteries are a poor match for pump-powered builds compared to lighter alternatives.

• Pickaxe.ca — How I Built a 6 Inch Highbanker, With Cyle Haddon — pickaxe.ca — An interview-format build log from the designer of a commercial backpack highbanker, walking through the prototyping decisions, hose choice, and why he ultimately recommends a gas pump like the Honda WX10 over a bilge pump for longer hose runs.

• TreasureNet — How Many GPH Pump for Highbanker? — treasurenet.com — A community thread comparing pump flow rates against different sluice matting types, with builders sharing real-world GPH numbers that worked for their specific setups.

MATTING & DESIGN DISCUSSION

• Crux Prospecting — Highbanking FAQ — cruxprospecting.com — A plain-language explainer of how highbanking works end to end, useful as a quick orientation before diving into the build-specific resources above.

A weekend, a plywood feed box, and a pair of bilge pumps wired to a battery is enough to get a highbanker running — the real skill, same as with a hand sluice, is dialing in slope and water flow together until material moves through steadily instead of stalling or blowing straight out the tail.