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Assessing Bedrock Stratigraphy and Fracture Hydraulics - Interactive Exercises and Practice

Borehole flow logs can be an important part of a hydrogeologist's toolbox. They can be used to estimate heads and hydraulic conductivities in wells with much less effort than packer testing or by setting individual wells and screens. However, experience has shown that borehole flow logs are not routinely used despite the tremendous amount of information they yield. One reason may be because while borehole flow logs require much less effort to collect, they are more difficult to plan and interpret.

Learn and Practice the Critical Steps for Interpreting Flow Meter Logs

The first webinar covers the basics of flow logging, how to collect quality data and basic interpretation of the results such as locations of higher heads and flow in the boring. The second webinar provides hydrogeologists with the ability to quantitatively interpret flow logging results. For example, after the second webinar, participants should be comfortable using data from flow logs to calculate heads and hydraulic conductivities of different depths in the boring. Experience has shown that it is essential that practitioners must actually do the calculations for them to be comfortable with them. The second webinar provides that unique opportunity for personalized practice and mentoring.


  • Applications of flowmeter data to hydraulic interpretation
    • Paillet method
    • Halford methods
  • Case studies in various bedrock types and conditions
    • Exercise 1
    • Exercise 2
    • Exercise 3

This two-part webinar series will present both common types of flowmeters and some future trends in associated equipment, including both mechanical spinner and heat-pulse systems. Participants will learn during PART ONE the basic theory of operation, pros and cons of various systems, and appropriate application for flowmeter testing. The webinar will address tool calibration and appropriate field procedures for obtaining reliable data. PART TWO includes case studies illustrating some of the most common challenges along with exercises to teach flow meter analysis.


  • Learn how to interpret a flow meter log
  • Practice calculating vertical flows and gradients across an aquitard
  • Learn common mistakes and how to avoid them

"The Webinar on borehole flow meter techniques has been an excellent summary and assessment of the different techniques as well as valuable pointers from experienced speakers. A definite must before any work related to borehole flow meters begins! Many thanks."
- Janka Nitsche, PhD, School of Planning, Architecture and Civil Engineering, Queen's University, Belfast

Instructors Bio

Dave Hart is a hydrogeologist/geophysicist with the Wisconsin Geological and Natural History Survey and an associate professor at the University of Wisconsin-Extension.

Dave's applied research includes regional groundwater flow and recharge in southeastern Wisconsin, near-surface geophysics, and measurement of porosities and permeabilities in aquifers and aquitards. Prior to joining the university, he served as a hydrogeologist with Eder Associates. He is an associate editor for Ground Water and past president of the AWRA - Wisconsin Section.

Fee: 299.00 USD Per Webinar

Downloads: Session Slides (PDF)
Additional Materials
  • Flow Log Interpretation

  • HwyAspinnerdataraw.xlsx

  • References

  • FLASH-1.xlsm

Record of Attendance Form (PDF)

Number of Participants: Unlimited from a single computer (Broadcast webinar in your conference room or auditorium for no extra charge)

Continuing Education Certificates: Unlimited. $14.95 each. Official CEU certificates are available as an option and only available at the time of webinar participation from Northern Illinois University. Ordering steps are given at time of webinar order.

Access: On-demand, anytime 24/7.
Access Duration: 24 hours.

Discounts: Buy 3 on-demand webinars, and get 3 on-demand webinars for free!

Duration: 90 minutes
PDH Earned: 1.5 hours
Instructor(s): David Hart, Ph.D., PG

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