The GF3500 seismo-electric survey instrument is designed specifically for detecting electrical signals generated by the passage of seismic impulses through layered rocks, sediments and soils.  Its design is portable, rugged and simple.  The remarkably high signal to noise ratios achieved with the patented design means that productivities are high; up to twenty water well or oil well sites or more can be surveyed by one operator in a day of work. Over seventy units have been sold to businesses and research organizations around the world. Most are used for groundwater and well water investigation but some are used for civil and environmental engineering work, research, and minerals exploration. Dozens of operators have used these units to find well water for farmers, home owners, land developers and anyone who needed to find well water before going to the significant expense of drilling a water well. The quality and potential quantity of the aquifer is estimated by semi-empirical relationships established between signal bandwidth and amplitude and aquifer permeability. These are supported by thousands of observations over the past decade.  This system has been effectively used to locate groundwater for well water development across North America, New Zeeland, Australia, Africa, the Middle East and Europe. It is also possible to estimate water table depth but most people who use these services want to know approximately how deep to drill and approximately how much water they can expect from their new water well. Systematic surveys along traverses or in grids allow the lateral variability of aquifers to be mapped. Contact us or visit www.findwellwater.com for more information.