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I once used contact gauges to measure ground water at one to two meter deep pipe wells in weekly intervals manually. Similar to those here. Its a bit time-consuming but works well for a limited number of stations. It looks like they exist in different quality stages, for deeper wells and maybe even with integrated gps-data logging, but not sure though. In ...


As alluded to by @BillW, the distance you are getting is in the units of the CRS you are using. The units of EPSG 4326 are degrees. That is, the distance (0.00003) is in degrees. If you want a distance in metres, use a CRS in metres (like UTM, or perhaps a state plane since it appears you're in the USA). Convert to miles later, if you have to.

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