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"Here's how to build a low cost groundwater detection system"  RSS feed

 
Dennis Lanigan
Posts: 175
Location: Philomath, OR
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Have you folks found groundwater yet at the Lab? This might help.

http://space.io9.com/heres-how-to-build-a-low-cost-groundwater-detection-sys-1656620195/+katharinetrendacosta
 
Tom OHern
Posts: 236
Location: Seattle, WA
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Resistivity testing is a tried and true method for helping to find groundwater, but this device will not reliably locate water more than a meter or two down unfortunately. And even if you had higher powered unit with enough sensitivity to get readings at more than 20+ feet, it actually takes quite a bit of training to interpret the results as the data can be effected by various factors which, if not accounted for, would give you a lot of false positives.
 
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