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Foundations of Pumping Test Interpretation:
1. The Theis Model

Discover and learn the most up-to-date information about
aquifer pumping test techniques from some of the most
recognized authorities in ground water.

Aquifer Pumping Tests are a key element to site characterization, water resources assessment and remediation system design. Even when you are confident of the geologic conditions, you may have difficulty designing effective aquifer tests, running field equipment or selecting the best available model to analyze the test data. Where do you turn for help with aquifer testing?

Midwest GeoSciences Group & In-Situ, Inc. can help! We have designed a powerful six-module webinar series about pumping test design, field methods and data analysis techniques.This course will highlight key steps for modernizing your aquifer testing from beginning to end.

MODULE THREE starts with understanding the Theis Model: the foundation of pumping test interpretation. The underlying assumptions of the Theis model are reviewed.

The discussion is followed by the development and application of the analyses based upon it. Although the assumptions underlying the Theis model may be violated to varying degrees during actual tests, the model has enduring value as a benchmark against which the observed responses to pumping can be assessed, supporting the diagnosis of site conditions.

Emphasis will be placed on applying the Theis model appropriately to yields representative estimates of the bulk average transmissivity of a formation.


  1. The Theis (1935) conceptual model
  2. The mathematics of the Theis solution
  3. Example Theis analysis
  4. The Cooper and Jacob (1945) approximation
  5. Overview of the Cooper-Jacob analyses
  6. Cooper Jacob time drawdown analysis
  7. Motivation for using Cooper-Jacob time drawdown analysis
  8. Choosing between the Theis and Cooper-Jacob analyses
  9. Introduction to Derivative Analysis
  10. Cooper Jacob distance drawdown analysis
  11. Composite analyses
  12. Case study: Application of the Cooper Jacob composite analysis
  13. Summary of key points
  14. References

Proficiency Test:
Confirm your knowledge after the course module with a self-test.

Register now for this unique online-offline course
that presents key insights about aquifer pumping tests
that are found nowhere else online.

Whether you want to apply aquifer pumping tests to hydrogeologic characterization, water supply development or remediation design, this Online-Offline Course will provide attendees with information that is not available elsewhere on the web.

Fee: $99.00 USD each
when Members register for the Entire Series,
Per Computer Site

$149.00 USD each
when Members register for Two-or-more modules,
Per Computer Site

299.00 USD for Part Three,
Per Computer Site

Instructor: Chris Neville, M.Sc., P.Eng.
Handouts: Copy of Webinar Slides (pdf)
Record of Attendance Form (pdf)
Duration: 1.5 hour plus Q&A
(no restrictions on time limit for extra Q&A!)
Earn 1.5 Professional Development Hours (1.5 PDH)

A Record of Attendance Form is included free with each webinar for your record keeping and individual PDH verification. We ask your on-site coordinator to return the completed and signed copy of the Form to us following the webinar for (1) maintaining a separate copy as a service to attendees and (2) forwarding to NIU confirming attendance for those who order certificates.

Attendees may also order an official a Course Completion Certificate from Northern Illinois University for a small administrative fee. The Certificate is optional and may be ordered separately following the webinar to confirm your attendance and showcase the certificate on your office wall. Instructions for ordering certificates are given during the webinar.

* This webinar is eligible for the 'BUY THREE, GET THREE' discount; however ANY webinar series discount shown above cannot be combined with it.

Attendees will be invited to actively participate during this live and interactive on-line web seminar. Discussion is planned following the webinar for those who want to continue the session. Bring your questions to the webinar and present them to the instructor and other participants for exploring the best solution.

Instructors Bio

Christopher J. Neville, M.Sc., P.Eng.

Mr. Neville is Chief Hydrogeologist with S.S. Papadopulos & Associates, Inc. He has over thirty years of experience in solving groundwater problems. His specialization is in the interpretation of hydrogeologic data, and the development and application of analytical and numerical techniques to analyze groundwater problems in complex granular and fractured porous media. Mr. Neville received his Bachelor of Engineering degree (Civil) in 1985 from McGill University and his Master of Science degree (Earth Sciences) from the University of Waterloo in 1992.

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