We monitor the depth of the water in our well via a system I built last year. The level rose rapidly at the end of last year (from ~3 feet of water to ~10 feet of water) during the heavy rains, so I decided to plot a chart of water depth and rainfall to see what it looked like.
...Our household water supply comes from an old hand-dug well. The well is 6ft wide, about 20ft deep, and was presumably dug back when the house was built in the 1880s. There's a simple automatic pump system to lift the water into a large storage tank.
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