Humor me Im thinking you could lower a fishing line with something on it to check for the water table.
Must be some nice DC well pumps in use by off grid people ,I spotted this 12/24v $80 Seaflow thats rated down to 230 ft on 24v
Description
This solid diaphragm style pump structure is simple and small, making it fit well in many style of wells and water systems, it does not displace too much water.
Weighing just 3 kg, it is easy for most people to handle.
Installation is simple and fast. The "quick disconnect" feature allows the pump to be easily separated from the tube via the patent pending "Watertight-Gland" design. Quickly control the pump when maintenance is needed.
Even if your well runs dry or you need to test in dry conditions, no damage will be done to this durable pump!
The positive displacement, 3 chamber solid design diaphragm pump is run by a permanent magnet thermally protected motor.
The stainless steel fastener and 50 mesh stainless steel inlet screen are long lasting and non-corrosive.
The housing is also corrosion proof, for a pump that will last for years and years in many conditions and environments.
With a flow rate of 6 1pm, this is an efficient pump for most watering needs. The maximum lift is 230 feet, which is sufficient for most wells and situations.
1.6 gpm (Gallons per Minute) flow rate
solid diaphragm structure
230 ft maximum lift
100 ft maximum submersible depth
solar power possible
3 kg weight
stainless steel fastener
stainless steel inlet screen
orange color housing