I tried this years ago and it ended in failure. From what I learned it seems like your soil down to the level you want to drill to has to be basically 100% silt/sand/clay. In most areas there are various pebbles, some up to the the size of a dime or so, and what I found was smaller particles would wash up and out of the hole, but these pebbles would accumulate on the bottom.
I switched from using low-volume water sources to a 1.5HP well pump pulling from a swimming pool. The pool would empty in about 20 minutes, and I would then have to wait for it to refill from a regular hose. However, while this very high water volume was able to clear the pebbles (which is how I know the floor of the hole was covered with pebbles at all, it was maybe 12 feet down at that point), there was diminishing returns and eventually the pebbles no longer cleared the top.
I'm sure I was doing something completely wrong, in the end if you have sandy/silty/clay soil you can just buy a sand point (aka driven point) and sledgehammer it down as deep as you need to go. It's a lot more heavy labor but it is also almost certain to work.
I'm doing a hammer driven well point right now, been pounding for 3 weeks nearly everyday. I get about 1 inch per day exhausting myself. I'm maybe 9 feet down, no water yet. I am getting a lot stonger and it gets eaier everyday. Probably have 20+ hours into this stupid thing already :(
I switched from using low-volume water sources to a 1.5HP well pump pulling from a swimming pool. The pool would empty in about 20 minutes, and I would then have to wait for it to refill from a regular hose. However, while this very high water volume was able to clear the pebbles (which is how I know the floor of the hole was covered with pebbles at all, it was maybe 12 feet down at that point), there was diminishing returns and eventually the pebbles no longer cleared the top.
I'm sure I was doing something completely wrong, in the end if you have sandy/silty/clay soil you can just buy a sand point (aka driven point) and sledgehammer it down as deep as you need to go. It's a lot more heavy labor but it is also almost certain to work.