Mark & Juanita wrote:
Bill Rider wrote:

DoN. Nichols wrote:

Not sure that I would lower a steel tape into a water well --
even assuming that the light could shine far enough down a well pipe.
[ ... ]

http://www.hermeticinc.com/open_gaug...ing_tapes.html

... snip
The tapes pictured ought to work fine for water wells, but for water
they recommend putting chalk on the tape so you don't have to worry
about just how far to lower it.

50 feet isn't going to cut it for water wells. 150 to 300 feet is
moderate, some go as deep as 1000 feet.


That tape would be fine for the wells I know. My well was drilled to
supply the neighborhood. The pump is down about 60 feet, but you
measure after giving the well time to fill. Then the water is only
about 12 feet down, and I'm on top of a hill. A mile up the road, a
relative's well is the same way. It was drilled to supply a dairy herd.
If the water table is within 50 feet of ground level, I'd rather use a
50' tape.