Water well problems. Submersible pump Southeast Texas?

If you know where the static is did they give you gpm the well produces you have 101 feet of water if you have the dia.of the well you could figure the gallons you have in reserve if none comes in the screen. how long before it starts shaking? recheck your static level after it recovers this should give you a idea if your running out of water.if its sunny look down the casing with a mirror to see whats going on.