An update on my well situation.....
The well guys came back yesterday and pulled out my pump and used a sand pump. They had previously lowered the pump 17 feet, but that did not seem to help much.
They hoped the sand pump would be able to unplug the bore hole and possibly go down farther, but there did not seem to be much sand at the bottom. Just some blue colored rock.
I did find out that my well is 160 feet with the pump at 157 feet.
Now, the water flowed at 16.5 gal per minute with no back pressure and flowed for about 5 minutes without stopping. At 60 psi pressure it flowed at 9 gal/min and didn't stop for the 10 minutes that we left it run.
So, the well is much improved. Nowhere near what it was at last year, but better than a few weeks ago.
They surmised that the improvement might have come from the sand pump thumping the bottom and loosening the sand that may have collected in the vertical slits in the last 20 feet of perforated casing. Don't really know, but it seemed better.
Anyway, I hope that did in fact make a difference.