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The Kansas Geological Survey's Well Tests for Site Characterization project is focused on the investigation of high-resolution aquifer characterization techniques, such as hydraulic tomography, and the identification and promotion of best practices for conventional well testing techniques, such as slug tests. For more information on this project, please contact Jim Butler or Geoff Bohling, project investigators. We are also doing related work on direct-push aquifer characterization techniques. At left: Vertical profiles of hydraulic conductivity in the alluvial aquifer at the KGS Geohydrologic Experimental and Monitoring Site estimated from hydraulic tomography (blue), an induced gradient tracer test (red), and two direct-push permeameter profiles (green and black). From Bohling et al., 2007.

Book

The Design, Performance, and Analysis of Slug Tests, Lewis Publishers, Boca Raton, 252 pp., 1998, by James J. Butler, Jr.

Selected Papers in Peer-Reviewed Journals and Edited Volumes Since 1998

Water Resources Research, vol. 45, W02420, 2009

Sensitivity and Resolution of Tomographic Pumping Tests in an Alluvial Aquifer by Geoffrey C. Bohling

Ground Water, in press

Pumping Tests for Aquifer Evaluation--Time for a Change? by James J. Butler, Jr.

Quantitative Information Fusion for Hydrological Sciences, X. Cai and T.-C.J. Yeh (Eds), Springer, p. 137-162, 2008

Information fusion in regularized inversion of tomographic pumping tests by Geoffrey C. Bohling

Water Resources Research, vol. 43, no. 5, 2007

A Field Assessment of the Value of Steady-shape Hydraulic Tomography for Characterization of Aquifer Heterogeneities by Geoffrey C. Bohling, James J. Butler, Jr., Xiaoyong Zhan, and Michael D. Knoll

Ground Water, vol. 45, no. 2, p. 178-186, 2007

Pumping-Induced Drawdown and Stream Depletion in a Leaky Aquifer System by James J. Butler, Jr., Xiaoyong Xhan, and Vitaly A. Zlotnik

Computers & Geosciences, vol. 32, no. 5, p. 704-707, 2006

KGS-HighK: A Fortran 90 program for simulation of hydraulic tests in highly permeable aquifers by Xiaoyong Zhan and James J. Butler, Jr.

Hydrogeophysics, Y. Rubin and S.S. Hubbard (Eds), Springer, p. 23-58, 2005

Hydrogeological methods for estimation of spatial variations in hydraulic conductivity by James J. Butler, Jr.

Water Resources Research, vol. 40, W12402, 2004

Hydraulic tests in highly permeable aquifers by James J. Butler, Jr. and Xiaoyong Xhan

Ground Water, vol. 41, no. 5, p. 620-630, 2003

Analysis of slug tests in formations of high hydraulic conductivity by James J. Butler, Jr., Elizabeth Garnett, and John M. Healey

Water Resources Research, vol. 38, no. 12, 2002

Steady-shape analysis of tomographic pumping tests for characterization of aquifer heterogeneities by Geoffrey C. Bohling, Xiaoyong Zhan, James J. Butler, Jr., and Li Zheng

Computers & Geosciences, vol. 27, no. 10, p. 1147-1156, 2001

lr2dinv: A finite-difference model for inverse analysis of two-dimensional linear or radial groundwater flow by Geoffrey C. Bohling and James J. Butler, Jr.

Water Resources Research, vol. 35, no. 11, p. 3553-3560, 1999

Pumping tests in networks of multilevel sampling wells: motivation and methodology by James J. Butler, Jr., Carl D. McElwee, and Geoffrey C. Bohling

Ground Water, vol. 36, no. 2, p. 305-313, 1998.

Relationship between pumping-test and slug-test parameters: Scale effect or artifact? by James J. Butler, Jr., and John M. Healey

Selected Abstracts and Open-File Reports Since 1998

Eos Trans. AGU, 88(52), Fall Meeting Supplement, Abstract H42B-06, 2007

Regularized Inversion of Tomographic Pumping Tests Incorporating Geophysical Data Through Smoothing Splines by Geoffrey C. Bohling

Eos Trans. AGU, 85(47), Fall Meeting Supplement, Abstract H21E-1049, 2004

Direct-Push Cross-Hole Slug Tests: A New Tool for Hydraulic Characterization of Aquifers by Ralf Brauchler, James J. Butler, Jr., and others

KGS Open-File Report 2003-60

Mathematical Derivations of Semianalytical Solutions for Hydraulic Tests in Highly Permeable Aquifers, by Xiaoyong Zhan and James J. Butler, Jr.

KGS Open-File Report 2003-71

Hydraulic Tomography and the Impact of A Priori Information: An Alluvial Aquifer Example, by Geoffrey C. Bohling, Xiaoyong Zhan, Michael D. Knoll, and James J. Butler, Jr.

KGS Open-File Report 2000-62

Direct-push hydraulic profiling in an unconsolidated alluvial aquifer, by James J. Butler, Jr., Alyssa A. Lanier, John M. Healey, Wesley McCall, and Elizabeth Garnett

KGS Open-File Report 2000-40

Simple Procedures for Analysis of Slug Tests in Formations of High Hydraulic Conductivity using Spreadsheet and Scientific Graphics, by James J. Butler, Jr., and Elizabeth J. Garnett

KGS Open-File Report 98-20

The Dipole Flow Test for Site Characterization: Some Practical Considerations, by James J. Butler, Jr., John M. Healey, Vitaly A. Zlotnik and Brian R. Zurbuchen