MW&A was founded in the early 1990s to provide advanced hydrologic and programming capabilities toward solutions of modeling and stochastic challenges in the earth sciences.  Recently MW&A has achieved breakthrough performances in practical hydrologic forecasting extending from monthly to decadal time scales.


I am a practicing hydroclimatologist who is also enrolled in a Ph.D. program in the Department of Nanoscience and Microsystems at the University of New Mexico.   My work in progress there relates to hydroclimatology and solar cycles.

Selected Hydroclimatology Papers & Other

Wallace, M.G., 2017, “The Turquoise Triangle: Distinctive Hydroclimatologic Patterns Across New Mexico And Connected Domains”, Invited presentation for New Mexico Mining Association,  2017 annual meeting Santa Fe, NM (September 7)

Wallace, M.G., 2017, “New Solar Based Moisture and Temperature Forecasts in the Western US”, Annual Symposium of the Arizona Hydrological Society, Flagstaff Arizona (September 8)

Wallace, M.G., 2017, Advances in Forecasting Flows of the Animas River and Other Streams in the Western US    2nd Annual Conference on Environmental Conditions of the Animas and San Juan Watersheds with Emphasis on Gold King Mine and Other Mine Waste Issues.  New Mexico Water Resources Research Institute (NMWRRI).  June 20-22, Farmington, NM  Download partial presentation (without animations) Here:  Final

 Wallace, M.G., 2017, “The Atlantic Multidecadal Oscillation (AMO) climate index.  Invited presentation to Groundwater Management District Associations (GMDA) Summer Conference for May 25, 2017.   Download Program Here:  Final

My work on PDO and streamflow correlations in Western U.S.  has recently been cited by the US Dept. of the Interior in the memorandum:

“Final Biological and Conference Opinion for Bureau of Reclamation, Bureau of Indian Affairs, and Non-Federal Water Management and Maintenance Activities on the Middle Rio Grande, New Mexico”  Fish and Wildlife Service

Wallace, M.G., 2017, Application of Solar – Tropospheric Connections Towards Improved Forecasts Of Streamflows In The Western US.  in review at Hydrological Sciences Journal.           DOI: 10.13140/RG.2.2.18264.19203

Wallace, M.G., 2016, Independent Technical Review of a stochastic hydrogeologic performance assessment component relating to an underground geologic repository for a federally regulated disposal project.

Wallace, M.G. 2016 PROFILES OF A DATA BASED TIME SERIES FOR GLOBAL OCEAN PELAGIC PH Comparisons of the NOAA NODC Ocean Climate Laboratory pH instrumental record archive to external hydroclimatologic data sets and to geochemical equilibrium calculations.  submitted to a geochemical journal in November 2016.

Wallace, M.G., 2016 Private Report on Acid Mine Drainage (AMD) hydrogeology and hydrogeochemistry for a coastal engineering and construction project in the Eastern Hemisphere.

Wallace, M.G. and P. Chylek, 2016Regression and Spectral Profiles of Ocean Index and Streamflow Correlation Patterns of the Western United States.  in submission to a peer review hydrology journal.

Wallace, M.G., 2016, Ocean and Solar Based Climate Forecasts, invited presentation to Thirtieth Annual Rio Grande Basin Snowmelt Runoff Forecast Meeting, interagency annual climate meeting sponsored by United States Department of Agriculture Natural Resources Conservation Service (USDA NRCS) with SNOTEL features.  Albuquerque, NM  April 12th, 2016 

Wallace, M.G., 2016, A data based time series for global ocean pelagic pH.  mid year white paper, superceded by later submission above.

Wallace, M.G., 2016, Solar and Ocean Based Hydrologic Forecasts for the Animas River Leading to the end of 2022.  Presentation at ENVIRONMENTAL CONDITIONS OF THE ANIMAS AND SAN JUAN WATERSHEDS WITH EMPHASIS ON GOLD KING MINE AND OTHER MINE WASTE ISSUES May 17-19, 2016  San Juan College, Farmington, NM Sponsored by the New Mexico Water Resources Research Institute

Wallace, M.G., and P. Chylek, 2015 Dominant correlations of ocean indices to hydroclimatology metrics of the southwestern United States.  white paper posted at

Wallace, M.G., 2014 The Relative Impact of the Pacific Decadal Oscillation Upon the Hydrology of the Upper Rio Grande and Adjacent Watersheds in the Southwestern United States  This is a white paper at but which is now superceded by the 2015 Wallace & Chylek paper listed above.

Wallace, M.G., 2014, Impacts for Hydrologic Forecasting from Correlations of the Pacific Decadal Oscillation (PDO) to Major New Mexico Watersheds.   New Mexico Mining Association,  2014 Santa Fe, NM.

Wallace, M.G., C. Johnson, and J. Love, 2014Potential Correlations of Historical Otowi Gage Sediment and Water Flows to Upstream Groundwater Management Practices.  presentation at National Ground Water Association (NGWA) Conference on Hydrology and Water Scarcity in the Rio Grande Basin, February 25-26, 2014

Wallace, M. G., 2011. Comparisons of the Quantification of Hydro-Climatologic Uncertainties in Recent Risk Assessments Affecting Basin Scale and Global Scale Hydrologic Phenomena,” poster presented at the American Geophysical Union Fall Meeting, San Francisco, CA, December 5–9.

Wallace, M. G. and J. D. Osnes, 2011.  Tidal Calculations to Assess Confining Properties of Marine Sediments Overlying a Cavern Rock Project, RSI-2175, prepared by RESPEC, Albuquerque, NM, for PB Energy Storage Services, Inc., Houston, TX.

Marani, M., G. Grossi, F. Napolitano, M. Wallace, and D. Entekhabi, 1997Forcing, Intermittency, and Land Surface Hydrological Partitioning,  Water Resources Research, Vol. 33, No. 1, pages 167-175, Jan, 1997.

Wallace, M., 1995, Potential Impacts of Climate Change on Groundwater Flow and Transport Conditions in the Culebra Aquifer.  Technical Report for Features, Events and Processes (FEP) package NS-8b.  prepared for Sandia National Laboratories, WIPP Project

Corbet, T. and M. G. Wallace, 1993.  Post Pleistocene Patterns of Shallow Groundwater Flow in the Delaware Basin, Southeastern New Mexico and West Texas, New Mexico Geological Society 44th Annual Field Conference and Guidebook, sponsored by the New Mexico Bureau of Mines and Mineral Resources, New Mexico Institute of Mining and Technology, Socorro, NM.

Osnes, J. and M.G. Wallace, 1993. Comparative Analysis of the Multiphase Flow Models, PORFLOW, TOUGH, and TRACRN, 1993,  Draft technical report prepared by RE/SPEC Inc. for Benchmark Environmental Corporation, Albuquerque, NM

Expert consultant to U.S. Army Corps of Engineers (Department of Defense), as a review panel member concerning a long-term regional groundwater flow model developed for the City of Gallup, New Mexico.  This is popularly known as the G-22 Experts Panel.  Hearing No. 99-003-OSE File No. G-22  and more.

Yucca Mountain Hydrology and Earth Sciences Support, Nevada.  I was the primary internal reviewer of the Yucca Mountain surface-water model and coupled recharge study.  The Yucca Mountain Project was designed to be the nation’s first geologic repository for long-term disposal of commercial spent nuclear fuel. I led a staff of approximately ten earth scientists, including six staff members of Idaho National Laboratory (INL); one engineer; and one staff member on loan from the Long Term Ecological Research Program, headquartered at the University of New Mexico (UNM). This team reviewed an extensive effort led by Sandia National Laboratories (SNL) to produce a defendable, predictive model of the climate driven infiltration regime of Yucca Mountain, following past efforts led by the U.S. Geological Survey (USGS).

In 2004, I served as primary reviewer of the 3D site-scale saturated zone model (employing the FEHM code) of the Yucca Mountain area conducted by scientists at Los Alamos National Laboratories.  For Sandia National Laboratories and Bechtel-SAIC, I implemented a qualification effort for the structural mechanics code JAS3DJAS3D is a 3D finite element program designed to solve large quasi-static nonlinear mechanics problems.  I also implemented a qualification effort for the ASHPLUME code that simulates plume development and atmospheric transport of ash and tephra caused by volcanic events.

In 2002–2003, I supported an investigation of thermal transport within the saturated zone underlying Yucca Mountain.  My contributions focused on qualification of measured and inferred thermal properties of the host aquifers.  In 2005, I conducted a software qualification effort for a submodule of the software code TOUGHREACT.  The TOUGHREACT code is part of the TOUGH2 framework of 3D multiphase, non-isothermal groundwater and heat transport codes.  TOUGHREACT adds reactive geochemistry to the solution methodologies of TOUGH2.

Waste Isolation Pilot Project Hydrologic and Earth Sciences Support, Carlsbad, New Mexico.   I was involved in several areas of the Waste Isolation Pilot Project (WIPP)—the nation’s first geologic repository for the long-term disposal of defense-generated nuclear waste.  I was the principal analyst in a groundwater flow and transport modeling effort for the WIPP Performance Assessment (PA) program.  I was the principal investigator on the first effort to determine that potash mining-induced subsidence would benefit the natural hydrologic long-term containment capabilities of the WIPP repository.  In addition, I developed the first water table contour surface for the WIPP vicinity while I was a principal investigator on seven scenario screening efforts for WIPP.  I served as a coinvestigator in a 3D paleohydrological/climate change consequence modeling study of the upper groundwater system and its relation to surface water flow in the WIPP region.  This included the modification of the MODFLOW code to implement a novel-free surface boundary condition.  I co-developed a numerical simulator using and modifying the simulators SUTRA and EQ36 that analyzed the coupled processes of salt creep and brine inflow related to excavations into the Salado Formation at WIPP.





2014 MW&A was recognized in appreciation of a presentation on ocean cycles and correlations to the US Southwest climate at the New Mexico Mining Association Annual Convention in Santa Fe, NM.


nmitsaCover  Serious Games Award


2005 I was the principal investigator for this project, ultimately funded by the US DOE to employ a modern day video game engine, coupled with a Latin Hypercube Simulator (LHS) to produce a stochastic set of possible outcomes of scenarios in which volcano-meets-repository, based on the best analyses of an international team of volcanologists, physcists, rock mechanics simulators, and hazard quantification experts.  Many thanks to all who contributed especially Harold Iuzzolino!

This NMITSA award program was cosponsored by Intel and Los Alamos National Laboratory. Among the finalists in the Innovative Research category were Sandia National Laboratories (SNL).
MWA won in this category.  When it comes to scientific disputes and competitions between SNL and MWA, we have a long history of being right, even when we support them as a loyal contractor.  😀

2000  Technology Ventures Corporation, a wholly owned subsidiary of Lockheed Martin, Corp.  awarded my startup company Global Haptics, Inc., a $10,000 Roadrunner Grant for best business plan, which I authored.  The plan concerned a venture based on my patented invention of a tactile computer aided interface device known as an Orb.  Citations to the Orb patents are now present in nearly 70 contemporary patents, including haptic inventions by Microsoft, Sony, Xerox, and Immersion Corp.




1998  I was the Art Director for the Calabacillas Arroyo project which has won three independent design/engineering awards.

ENDAUMaward4mwaWater is Life Award

1999 Eastern Navajo Community  presented this award for my  expert witness work in helping to protect their sole-source water supply from a proposed in situ leachate (ISL) uranium mine which was planned within the same aquifer, only a few thousand feet away.  Up to 15,000 residents in the region make weekly trips (some driving as far as 50 miles) to a handful of water supply wells tapping into the aquifer of concern, for their drinking and washing needs.   I demonstrated the risk that the proposed mine posed to that water resource and successfully sustained my assertions against over half a dozen opposing expert witnesses.

This effort was paralleled by previous work I conducted for the same indigenous communities, centered around the UNESCO World Heritage Site Chaco Canyon, to prevent the oil and gas industry from continuing their widespread practice of simply pouring their contaminated waste products directly into the ground (thereby contaminating soil and groundwater).  In that case my testimony withstood challenges by several opposing experts from several consulting firms, resulting in regulations that applied additional safeguards to disposal practices within that region.