qbwebb wrote:I was wondering if anyone here has ever rigged up a sensor to tell them how much water remains in their private well? I was thinking a small pressure sensor that wen't down the well bore could be rigged to a voltage monitor of sorts, and then using Mr Bernoulli's equation could be easily correlated to current volume of water in the well....very useful information in these abnormally southern New England dry times.....
You are thinking on the right track. What you want to do is rig up a bubbler water level measurement system. It uses a tube the runs to the bottom of the well and a restricted flow air source. The back pressure on the line is your water depth. This could be measured with a magnehelic guage or electronic sensors.
Attached is a technical article on it. Also search the web as there is a lot of manufacturers that provide this technology.
Note this is a freeze proof method and a simple plastic line could be run from the house to the well, keeping the electronics or meter in the house.