Thursday, September 27, 2012

Drilling a well in Arizona

If you are considering drilling a well in Arizona, consider having your groundwater surveyed by Southwest Groundwater Surveyors.  Don't risk paying one cent drilling a dry hole.  Southwest Groundwater Surveyors find well water before you drill, eliminating the guesswork.  We will find the optimum drill site and estimate depth to drill (to the base of the aquifer) and estimate the aquifers yield.  Never drill a dry well.  Call Southwest Groundwater Surveyors at 800-394-6207  or visit our website at 

Never Drill a Dry Well!

SGS is a member of National Groundwater Assoc.

Visit us at the World Ag Expo in February

Monday, September 17, 2012

Locating Well Water In Southern California

For the past three week Southwest Groundwater Surveyors have been conducting groundwater investigation services in Southern California with mixed success.  Locating well water in Southern California can be challenging and at times down right frustrating.  It is difficult to find out any information about surrounding wells unless you are the property owner,  because in California well information is not public information. (as in other states)  And in many areas there are more dry holes drill than successful ones.  That is why it is so important to have Southwest Groundwater Surveyors find well water for you, before rolling the dice and drilling blindly

Never drill a dry well!

To book your groundwater survey contact us at...  
Phone: 800-394-6207


An aquifer is a water saturated permeable geologic layer, or fracture zone, that is able to transmit significant quantities of water.  A geologic layer that cannot transmit significant quantities of water is usually referred to as an aquiclude.  An aquitard is a rock unit that generally has a low permeability and hence will transmit only very limited quantities of water and are generally not suitable for production wells.  The terms Aquifer or aquitards can be used to define most geologic strata.  The most common aquifers include permeable sedimentary rocks such as sandstones, limestone’s, sand and gravel layers, and highly fractured volcanic and crystalline rocks.  Common aquitards are un-fractured shale’s, clays and dense (un-fractured) crystalline rocks.

Sedimentary aquifers form layers and usually have a large lateral extent, whereas aquifers in fracture zones in igneous and crystalline rocks may have a very limited lateral extent. When searching for water using any geophysical method, including the Electro seismic method, the type of aquifer that may be present should be considered, both when planning a survey and especially when considering drilling.

  • Confined—An aquifer overlain by one or more layers of impermeable rock or soil that restrict water to within the aquifer. The water is confined under pressure. Drilling a well into a confined aquifer releases that pressure and causes the water to rise in the well. These wells are sometimes called artesian wells.
  • Unconfined—An aquifer that is not overlain by a layer of impermeable rock or soil. Water in a well will naturally stay at the level of the water table. As water is removed from the well, the water table at that place is lowered, causing the surrounding ground water to flow toward the well.

Southwest Groundwater Surveyor
Serving Southern California, Arizona, New Mexico, Utah.

Friday, September 7, 2012

Ideal Conditions for a Groundwater Survey Prior to Well Drilling

Having a reasonable expectation of finding well water prior to drilling a well is a great benefit for the prospective well owner.  Southwest Groundwater Surveyor uses the Electroseismic method for locating the optimal  well drilling location.

   Briefly, the Electro seismic method, sometimes called Electro Kinetic Surveys (EKS) makes use of a phenomenon, known since the 1950’s, whereby an electrical signal is produced when a seismic wave encounters water within rock pores, such as is the case for an aquifer.  Although the basic Physics of the method has been understood for many years, and numerous field demonstrations have been completed showing the feasibility of the method, it was not until 1996, when a company called Groundflow Ltd. developed and patented very specific electronics and associated techniques required to measure and interpret the EKS signal, making the method more practical.  Using these techniques the EKS signal is recorded using a data recording geometry that significantly minimizes naturally occurring electrical noise.  Groundflow Ltd developed the instrumentation to both record this signal and to process the data, allowing the existence of groundwater, if present, to be inferred along with estimates of its depth and the yield of the aquifer.

Accuracy of interpretation can sometimes be increased if a local well is available whose aquifer depth (top and bottom) and yield are known.  In this case a sounding can be conducted close to the well allowing us to “calibrate” the sound velocities and acoustic attenuation for the particular underlying rock matrix.
The ideal conditions required to effectively collect sufficient data for an accurate survey are as follows:

1. Access to desired survey location by 4 wheel drive vehicle.2. Survey area must be at least 50 feet away from any underground power.3. Surveyors must be able to install 3 ft. long electrodes into the soft ground with minimal rock interference. 

For more information or to contact us visit our web site at