Thanks Jeff! The the river bed is all natural. Worked since the 1850's, but lots of bedrock replenishes every flood. The high water will get up to the middle of the tailing piles in pic#2. Over time I will add some riffles by cutting logs and anchoring them in the smaller flood channels.Think 200 foot sluice box! Should make it easy to clean up some gold without thinking too much. A month or two and I should have a pretty good map of pay streaks and bedrock formation. Damn, I want to drive over there right now!