Thomas Lachmar

Hydrogeology

Associate Professor & Undergraduate Mentor


Thomas E. Lachmar

Contact Information

Office Location: Geology 305
Phone: 435.797.1247
Email: tom.lachmar@usu.edu
Additional Information:

Educational Background

PhD, Geology, University of Idaho, 1989
MS, Geosciences, Purdue University, 1977
BS, Geology, University of California, Davis, 1975

Publications | Abstracts

  • Lachmar, T.E, (2009). Fracture-flow hydrogeology of the Bunker Hill Mine, Kellogg, Idaho. Geological Society of America annual meeting *
  • Inkenbrandt, P.C, Lachmar, T.E, (2009). Compilation of existing estimates and field measurements of aquifer parameters in Cache Valley, Utah and Idaho. Geological Society of America Rocky Mountain section meeting *
  • Lachmar, T.E, Nelson, T.P, Randall, K.L, (2007). MODFLOW modeling for a proposed artificial salmon spawning channel extension near Hyder, Alaska. Geological Society of America annual meeting *
  • Nelson, T.P, Randall, K.L, Lachmar, T.E, (2007). Feasibility of extending an artificial salmon spawning stream near Hyder, Alaska. Geological Society of America Rocky Mountain section meeting *
  • Randall, K.L, Lachmar, T.E, (2007). Geologic and hydrochemical evaluation of the suitability of the Navajo Sandstone for CO2 sequestration in central Utah. Geological Society of America Rocky Mountain section meeting *
  • Lachmar, T.E, Olsen, A.A, (2007). Identification of discharge sources to springs in southeastern Cache Valley, Utah. USU Water Initiative Spring Runoff Conference *
  • Lachmar, T.E, Olsen, A.A, (2006). Discharge monitoring, chemical characterization, and source identification of springs along the east side of southern Cache Valley, Utah. Geological Society of America Rocky Mountain section meeting *
  • Lachmar, T.E, Randall, K.L, (2006). Suitability of the Navajo Sandstone for CO2 sequestration in central Utah. Geological Society of America Rocky Mountain section meeting *
  • Kolesar, , Evans, J.P, Lachmar, T.E, Gooseff, M.N, Payn, R., (2006). A tale of two karsts, Bear River Range, Cache National Forest, Utah. USU Water Initiative Spring Runoff Conference *
  • Kolesar, P.T, Evans, J.P, Gooseff, M.N, Lachmar, T.E, Payn, R., (2005). A tale of two (or more) karsts, Bear River Range, Cache National Forest, Utah. Geological Society of America annual meeting *
  • Gooseff, M.N, Evans, J.P, Kolesar, , Lachmar, T.E, Payn, R., (2005). Determination of hydrologic contributions from springs to the Logan River, Utah. American Geophysical Union spring meeting *
  • Lachmar, T.E, Schieb, W.M, Evans, J.P, (2005). Hydraulic testing of a faulted sandstone reservoir - the Big Hole fault in the Navajo Sandstone, northern San Rafael Swell, Utah. Geological Society of America Rocky Mountain section meeting *
  • Murch, K.L, Lachmar, T.E, Dupont, R.R, (2004). Evaluation of bioremediation suitability at a TCE-contaminated site based on large-scale column tracer and microcosm experiments. Geological Society of America Rocky Mountain and Cordilleran sections joint meeting *
  • Burk, N.I, Lachmar, T.E, Kolesar, P.T, (2004). Geochemistry of metals in surface and ground water from an abandoned mine in the north fork of the American Fork River. Geological Society of America Rocky Mountain and Cordilleran sections joint meeting *
  • Lachmar, T.E, (2003). Hydrogeochemical characterization of leaking CO2-charged fault zones in east-central Utah. Institut Francais du Petrole, International Conference on Gas-Water-Rock Interactions Induced by Reservoir Exploitation, CO2 Sequestration, and other Geological Storage. *
  • Heath, , Evans, J.P, Lachmar, T.E, (2003). Hydrogeochemical characterization of leaking CO2-charged, low net-to-gross fault zones: the Little Grand Wash and Salt Wash fault zones, Emery and Grand Counties, Utah. American Association of Petroleum Geologists, International Conference & Exhibition *
  • Bradbury, , Evans, J.P, Yonkee, , Lachmar, T.E, (2002). Structural characterization of folded and fractured sedimentary bedrock aquifers near Park City, Utah. Fractured-Rock Aquifers 2002 Conference *
  • Heath, j.E, Lachmar, T.E, Shipton, Z.K, Nelson, S., Evans, J.P, (2002). Hydrogeochemical analysis of leaking CO2-charged fault zones: the Little Grand Wash and Salt Wash fault zones, Emery and Grand Counties, Utah. Geological Society of America Abstracts with Programs *
  • Robinson, J.M, Lachmar, T.E, (2001). Hydrostratigraphic and chemical characterization of groundwater and surface water interactions in Cache Valley, Utah. Geological Society of America Rocky Mountain and South-Central sections joint annual meeting *
  • Forster, C.B, Evans, J.P, Shipton, Z.K, Lachmar, T.E, (2000). Deformation bands; networks of low permeability systems associated with faults in sandstone:. American Geophysical Union spring meeting *
  • Evans, J.P, Lachmar, T.E, Robeson, K., Schieb, B., Shipton, Z., Forster, C.B, Snelgrove, S.S, S.S, (1999). Detailed Three-Dimensional Fault Zone Structure and Hydraulic Properties of the Big Hole Normal Fault, Utah. American Association of Petroleum Geologists annual convention *
  • Lachmar, T.E, Hadlock, G.L, McCalpin, J.P, (1994). The hydrogeology of lower Medano Creek, Great Sand Dunes National Monument, San Luis Valley, Colorado. Geological Society of America Abstracts with Programs *

An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.

    Publications | Book Chapters

  • Heath, J.E, Lachmar, T.E, Evans, J.P, Kolesar, P.T, Williams, A.P, (2009). Hydrogeochemical characterization of leaking carbon-dioxide charged fault zones in east-central Utah, with implications for geologic carbon storage: Sequestration and Its Role in the Global Carbon Cycle. Geophysical Monograph Series
  • Lachmar, T.E, Gadt, J.W, Robinson, J.M, (2004). Isotopic characterization of ground water in Salt Lake and Cache Valleys, Utah: Ground Water in Utah: Resource, Protection, and Remediation. Utah Geological Association
  • Lachmar, T.E, Myers, B., Robinson, J.M, (2004). Updated conceptual and MODFLOW ground-water models of Cache Valley, Utah and Idaho: Ground Water in Utah: Resource, Protection, and Remediation. Utah Geological Association
  • Lachmar, T.E, Gadt, J.W, Forster, C.B, (1993). Ground water management for wellhead protection in a confined to semiconfined aquifer, Salt Lake County, Utah: Management of Irrigation and Drainage Systems: Integrated Perspectives. American Society of Civil Engineers

An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.

Publications | Journal Articles

Academic Journal

Professional Journal

  • Shervais, J.W, Nielson, D.L, Evans, J.P, Lachmar, T.E, Christiansen, E.H, Morgan, L., Shanks, W.P, Delahunty, C., Schmitt, D.R, Liberty, L.M, Blackwell, D.D, (2012). Hotspot: The Snake River Geothermal Drilling Project -- Initial Report. Geothermal Resources Council Transactions, 36, 767-772.
  • Lachmar, T.E, Freeman, T., Shervais, J.W, Nielson, D.L, (2012). Preliminary Results: Chemistry and Thermometry of Geothermal Water from MH-2B Test Well. Geothermal Resources Council Transactions, 36, 689-692.

An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.

Publications | Other

An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.

Teaching

GEO 5570 - Engineering Geology, Fall 2023
GEO 5510 - Groundwater Geology, Fall 2023
GEO 5510 - Groundwater Geology, Spring 2023
GEO 5520 - Techniques of Groundwater Investigations, Spring 2023
GEO 5570 - Engineering Geology, Fall 2022
GEO 5510 - Groundwater Geology, Fall 2022
GEO 4850 - Internship/Co-op, Fall 2022
GEO 4900 - Special Problems, Fall 2022
GEO 5200 - Geology Field Camp, Summer 2022
GEO 4900 - Special Problems, Summer 2022
, Spring 2022
GEO 5510 - Groundwater Geology, Spring 2022
GEO 4900 - Special Problems, Spring 2022
GEO 5520 - Techniques of Groundwater Investigations, Spring 2022
GEO 5570 - Engineering Geology, Fall 2021
GEO 4850 - Internship/Co-op, Fall 2021
GEO 4900 - Special Problems, Summer 2021
GEO 5520, 6520 - Techniques of Groundwater Investigations, Spring 2021
GEO 5510 - Groundwater Geology, Fall 2020
GEO 4900 - Special Problems, Fall 2020
GEO 4900 - Special Problems, Spring 2020
GEO 5520, 6520 - Techniques of Groundwater Investigations, Spring 2020
GEO 5510 - Groundwater Geology, Fall 2019
GEO 5510 - Groundwater Geology, Spring 2019
GEO 4900 - Special Problems, Spring 2019
GEO 4900 - Special Problems, Spring 2019
GEO 5520 - Techniques of Groundwater Investigations, Spring 2019
GEO 1110 - Physical Geology, Fall 2018
GEO 1115 - Physical Geology Laboratory, Fall 2018
GEO 1115 - Physical Geology Laboratory, Fall 2018
GEO 1115 - Physical Geology Laboratory, Fall 2018
GEO 1115 - Physical Geology Laboratory, Fall 2018
GEO 1115 - Physical Geology Laboratory, Fall 2018
GEO 1115 - Physical Geology Laboratory, Fall 2018
GEO 1115 - Physical Geology Laboratory, Fall 2018
GEO 1115 - Physical Geology Laboratory, Fall 2018
GEO 4900 - Special Problems, Fall 2018
GEO 4900 - Special Problems, Summer 2018
GEO 5510 - Groundwater Geology, Spring 2018
GEO 1110 - Physical Geology, Spring 2018
GEO 1115 - Physical Geology Laboratory, Spring 2018
GEO 1115 - Physical Geology Laboratory, Spring 2018
GEO 1115 - Physical Geology Laboratory, Spring 2018
GEO 1115 - Physical Geology Laboratory, Spring 2018
GEO 1115 - Physical Geology Laboratory, Spring 2018
GEO 1115 - Physical Geology Laboratory, Spring 2018
GEO 1115 - Physical Geology Laboratory, Spring 2018
GEO 4900 - Special Problems, Spring 2018
GEO 4900 - Special Problems, Fall 2017
GEO 5520, 6520 - Techniques of Groundwater Investigations, Fall 2017
GEO 1110 - Physical Geology, Spring 2017
GEO 4900 - Special Problems, Spring 2017
GEO 4900 - Special Problems, Spring 2017
GEO 2500 - Geology Field Excursions, Fall 2016
GEO 5510 - Groundwater Geology, Fall 2016
GEO 1110 - Physical Geology, Fall 2016
GEO 4900 - Special Problems, Fall 2016
GEO 4900 - Special Problems, Summer 2016
GEO 4900 - Special Problems, Spring 2016
GEO 4900 - Special Problems, Spring 2016
GEO 4900 - Special Problems, Spring 2016
GEO 5520, 6520 - Techniques of Groundwater Investigations, Spring 2016
GEO 5510 - Groundwater Geology, Fall 2015
GEO 1110 - Physical Geology, Fall 2015
GEO 4800 - Senior Seminar, Fall 2015
GEO 4900 - Special Problems, Fall 2015
GEO 4900 - Special Problems, Spring 2015
GEO 5520 - Techniques of Groundwater Investigations, Spring 2015
GEO 6520 - Techniques of Groundwater Investigations, Spring 2015
GEO 5510 - Groundwater Geology, Fall 2014
GEO 1110 - Physical Geology, Fall 2014
GEO 4900 - Special Problems, Fall 2014
GEO 1110 - Physical Geology, Spring 2014
GEO 4800 - Senior Seminar, Spring 2014
GEO 4900 - Special Problems, Spring 2014
GEO 4900 - Special Problems, Spring 2014
GEO 5510 - Groundwater Geology, Fall 2013
GEO 4800,6820 - Senior Seminar, Fall 2013
GEO 4900 - Special Problems, Fall 2013
GEO 4800 - Senior Seminar, Spring 2013
GEO 4900 - Special Problems, Spring 2013
GEO 5520 - Techniques of Groundwater Investigations, Spring 2013
GEO 5510 - Groundwater Geology, Fall 2012
GEO 1110 - Physical Geology, Fall 2012
GEO 4900 - Special Problems, Fall 2012
GEO 5520,6520 - Techniques of Groundwater Investigations, Spring 2012
GEO 2500 - Geology Field Excursions, Fall 2011
GEO 5510 - Groundwater Geology, Fall 2011
GEO 1110 - Physical Geology, Fall 2011
GEO 4900 - Special Problems, Summer 2011
GEO 1110 - DYNAMIC EARTH (BPS), Spring 2011
GEO 5600 - GEOCHEMISTRY, Spring 2011
GEO 4900 - SENIOR SEMINAR, Spring 2011
GEO 5650 - SENIOR THESIS, Spring 2011
GEO 4900 - SPECIAL PROBLEMS: UG RESEARCH, Spring 2011
GEO 5510 - Groundwater Geology, Fall 2010
GEO 5650 - Senior Thesis, Fall 2010
GEO 4900 - Special Problems, Fall 2010
GEO 1110 - The Dynamic Earth: Physical Geology, Fall 2010
USU 1010 - University Connections, Fall 2010

Graduate Students Mentored

Lindsay Gordon, Geosciences, August 2023
Connor Smith, Geosciences, August 2019 - May 2022
Skyler Sorsby, Geosciences, August 2016 - May 2019
Hannah McDonough, Geosciences, August 2010 - May 2015
Thomas Freeman, Geosciences, August 2010 - December 2013
P Inkenbrandt, 2010
T Nelson, 2010
K Randall, 2009
A Olsen, 2007
J Heath, 2004
N Burk, 2004
W Schieb, 2004
B Myers, 2003
K Murch, 2003
J Robinson, 1999
A Jones, 1995
G Hadlock, 1995
J Gadt, 1994
M El-Bihery, 1993