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Related Experiment Videos

Estimating hydraulic properties using a moving-model approach and multiple aquifer tests.

Keith J Halford1, Dann Yobbi

  • 1U.S. Geological Survey, 333 West Nye Lane, Room 203, Carson City, NV 89706, USA. khalford@usgs.gov

Ground Water
|March 25, 2006
PubMed
Summary

A novel method accurately characterizes deep geohydrologic columns and aquifer hydraulic properties. This approach integrates pumping tests and numerical modeling for reliable groundwater resource assessment.

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Area of Science:

  • Geohydrology
  • Hydrogeology
  • Environmental Science

Background:

  • Characterizing complex geohydrologic systems with multiple aquifers is challenging.
  • Understanding aquifer hydraulic properties is crucial for sustainable water management.

Purpose of the Study:

  • To develop and apply a new method for characterizing deep geohydrologic columns (>600 m) with multiple discrete aquifers.
  • To determine average hydraulic properties of aquifers and confining units.

Main Methods:

  • Individual aquifer pumping tests with monitoring in stressed and adjacent aquifers.
  • Interpretation of drawdowns using a radial numerical model simulating all pumping events.
  • Assumption of homogeneous and isotropic hydraulic properties within each geohydrologic unit.

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Main Results:

  • The method was successfully applied at 12 sites in the Southwest Florida Water Management District.
  • Average hydraulic properties were determined for aquifers and confining units within specified radii.
  • Hydraulic property estimates were consistent and reasonable due to simultaneous analysis of multiple data sources.

Conclusions:

  • The developed method provides a reliable approach for characterizing complex geohydrologic columns.
  • Simultaneous analysis of data from multiple aquifers and pumping events enhances the accuracy of hydraulic property estimates.
  • This method aids in better understanding and managing groundwater resources in areas with multiple aquifers.