Hi WP-
VERY interesting stuff you posted.
Yuo may be right about the upper hole intercepting water. The reason we did a seocnd hole is because we found a second spring coming in pretty hard from the side, and wanted to make sure we caught that one, too. You might be right about it only taking a year, I'm not sure. We installed this last year in April, I think, and since then it always produces, sometimes less, sometimes more. You're also right on about the clay packing in initially, on the sidewalls. When we first dug it out, almosty nothing was coming out of the sides, and I was DEPRESSED. Satt there & watched it for almost a week, and slowly, water started coming along...slowly. It got better n better, until it really ran pretty good, I think the most I ever saw from it last spring was about 1.2 GPM, but I was thrilled with that.
Good info from you, thanks!
Chris