This is just my two cents on the river/creek hunting: Do a little research up front and it will make your hunting so much better. My father is the one that reminded me of the value of knowing the terrain. I research places on dry land, but for some reason I didn't bother with the rivers. Dad asked me how my hunt at a park's river frontage went. I told him it was productive but the coins were all new so I was disappointed. He said, "Just how old do you want the coins to be? Coins are coins." I replied telling him I wanted coins before 1965 - silver. He said, "Well, there's the old car wash..." I hadn't seen any car wash facilities anywhere. I asked if it had been tore down. He then went on to explain that folks didn't waste their money on fancy car washes like they do now. There was a low water spot on the river (about a foot deep or so) with a good gravel bed and solid bedrock just below it. They would drive their cars into the river or at least partially into the river and clean it right there on the spot. Floor mats where pulled out, laid in the river with a large rock to keep them in place. He didn't quite have his story told and we were walking for the car. I just had to detect this spot. I was only able to detect it once and for just a short time, but it did turn up a few mercury dimes and handful of wheaties. After that, I started thinking about all the low water crossings where covered wagons may have crossed. My leave was up (I was active duty military at the time) and I never pursued researching the old wagon roads and water crossings. I can only imagine they would be productive as well. One more thing, I found most of the coins about 15 feet below the "washing" area. I don't know if the river changed that much or if the coins were just carried that far before they settled. I hope this helps you find some silver.