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peer-reviewed papers and books (+=undergraduate student author; *=graduate student author; #=postdoc author)
Note: PDF reprints are provided below within the context of fair use. Please obtain copies from the publisher if appropriate.

Google Scholar Link


[64] - Foks, S.S.*, Stets, E.G., Singha, K. and Clow, D.W. (in press). Influence of climate on alpine stream chemistry and water sources. Hydrological Processes.

[63] - Rice, A.K.*, McCray, J.E., and Singha, K. (in press). Methane leakage from hydrocarbon wellbores into overlying groundwater: Numerical investigation of the multiphase flow processes governing migration. Water Resources Research.

[62] - Rice, A.K.*, Lackey, G.*, Proctor, J.+, and Singha, K. (in press). Groundwater quality hazards of methane leakage from hydrocarbon wells: A review of observational and numerical studies and four testable hypotheses. Wiley Interdisciplinary Reviews (WIREs) Water.


[61] - Pai, H.#, Malenda, H.*, Briggs, M., Singha, K., González-Pinzón, R., Gooseff, M., Tyler, S.W. and the AirCTEMPS Team (2017). Potential for small unmanned aerial systems applications for identifying groundwater-surface water exchange characteristics in a meandering river reach. Geophysical Research Letters, 44, doi: 10.1002/2017GL075836.

[60] - Sherman, T.*, Fakhari, A.#, Miller, S.*, Singha, K. and Bolster, D. (2017). Parameterizing the Spatial Markov model from breakthrough curve data alone. Water Resources Research, 53, doi: 10.1002/2017WR021810.

[59] - Parsekian, A., Claes, N.#, Singha, K., Minsley, B., Carr, B., Voytek, E.*, Harmon, R.*, Kass, M., Carey, A., Thayer, D.*, Flinchum, B.* (2017). Comparing measurement response and inverted results of electrical resistivity tomography instruments. Journal of Environmental and Engineering Geophysics, 22(3), 249-266.

[58] - Wieting, C.*, Ebel, B., and Singha, K. (2017). Quantifying the effects of wildfire on changes in soil properties by surface burning of soils from the Boulder Creek Critical Zone Observatory. Journal of Hydrology-Regional Studies, http://dx.doi.org/10.1016/j.ejrh.2017.07.006, 43-57.

[57] - Day-Lewis, F.D., Linde, N., Haggerty, R., Singha, K. and Briggs, M.A. (2017). Pore-network modeling of the electrical signature of anomalous solute transport. Geophysical Research Letters, doi: 10.1002/2017GL073326, 9 p.

[56] - Ward, A.S., Schmadel, N.M.#, Wondzell, S.M., Gooseff, M.N. and Singha, K. (2017). Dynamic hyporheic and riparian flowpath geometry through baseflow recession in two headwater mountain stream corridors. Water Resources Research, doi: 10.1002/2016WR019875, 15 p.

[55] - Bolster, D., Benson, D., and Singha, K. (2017). Upscaling chemical reactions in multicontinuum systems: When might time fractional equations work? Chaos, Solitons and Fractals, doi: 10.1016/j.chaos.2017.04.028, 13 p.

[54] - Johnston, A.J.*, Runkel, R.L., Navarre-Sitchler, A. and Singha, K. (2017). Exploration of diffuse and discrete sources of acid mine drainage to a headwater mountain stream in Colorado, USA. Mine Water and the Environment, doi:10.1007/s10230-017-0452-6, 16 p.

[53] - Brantley, S., Lebedeva, M., Balashov, V., Singha, K., Sullivan, P., Stinchcomb, G. (2017). Toward a conceptual model relating chemical reaction fronts to water flow paths in hills. Geomorphology, doi: 10.1016/j.geomorph.2016.09.027, 18 p.


[52] - Sullivan, P.L.#, Hynek, S.#, Gu, X.#, Singha, K., White, T., West, N.#, Kim, H.#, Clarke, B.#, Kirby, E., Duffy, C., Brantley, S.L. (2016). Oxidative dissolution under the channel leads geomorphological evolution at the Shale Hills catchment. American Journal of Science, 316, p. 981-1026, DOI 10.2475/10.2016.02, 46 p.

[51] - Williams, M.R.*, Buda, A.R., Singha, K., Folmar, G., Elliott, H.A., and Schmidt, J. (2016). Imaging hydrologic processes in headwater riparian seeps with time-lapse electrical resistivity. Groundwater, doi: 10.1111/gwat.12461, 13 p.

[50] - Mares, R.*, Barnard, H.R., Mao, D.#, Revil, A. and Singha, K. (2016). Examining diel patterns of soil and xylem moisture using electrical resistivity imaging. Journal of Hydrology, doi: 10.1016/j.jhydrol.2016.03.003, 12 p.

[49] - Ward, A.S., Schmadel, N.M., Wondzell, S.M., Harman, C., Gooseff, M.N. and Singha, K. (2016). Hydrogeomorphic controls on hyporheic and riparian transport in two headwater mountain streams during baseflow recession. Water Resources Research, doi: 10.1002/2015WR018225, 19 p.

[48] - Voytek, E.*, Rushlow, C.*, Godsey, S., Singha, K. (2016). Identifying hydrologic flowpaths on arctic hillslopes using electrical resistivity and self potential. Geophysics, 81(1), WA225-WA232.

[47] - Meixner, T., Manning, A.H., Stonestrom, D., Ajami, H., Allen, D.M., Blasch, K., Brookfield, A., Castro, C.L., Clark, J.F., Gochis, D., Flint, A., Neff, K., Niraula, R., Rodell, M., Scanlon, B., Singha, K., and Walvoord, M. (2016). Implications of projected climate change for groundwater recharge in the western United States. Journal of Hydrology, 534, doi:10.1016/j.jhydrol.2015.12.027, 124-138.


[46] - Bethune, J.*, Randell, J., Runkel, R., and Singha, K. (2015). Non-invasive flow path characterization in a mining-impacted wetland. Journal of Contaminant Hydrology, doi:10.1016/j.jconhyd.2015.10.002, 11 p.

[45] - St. Clair, J.*, Moon, S.#, Holbrook, W.S., Perron, J.T., Riebe, C.S., Martel, S., Carr, B., Harman, C., Singha, K. and Richter, D. (2015). Geophysical imaging reveals topographic stress control of bedrock weathering. Science, 350(6260), doi: 10.1126/science.aab2210, 534-538.

[44] - National Research Council (2015). Characterization, Modeling, Monitoring, and Remediation of Fractured Rocks, National Academy Press, Washington D.C., 244 p. (one of 10 authors)

[43] - Williams, M.R.*, Buda, A.R., Elliott, H.A., Singha, K., and Hamlett, J. (2015). Influence of riparian seepage zones on nitrate variability in two agricultural headwater streams. Journal of the American Water Resources Association, JAWRA-14-0043-P, 15 p.

[42] - Binley, A., Hubbard, S.S., Huisman, J.A., Revil, A., Robinson, D.A., Singha, K., Slater, L.D. (2015). The emergence of hydrogeophysics for improved understanding of subsurface processes over multiple scales. Water Resources Research, doi: 10.1002/2015WR017016, 30 p. (Part of the WRR@50 Anniversary Issue.)

[41] - Hagarty, J.*, Azanu, D.*, Atosona, B.*, Voegborlo, R., Smithwick, E.A.H., and Singha, K. (2015). Chemistry of natural waters and its relation to Buruli Ulcer in Ghana. Journal of Hydrology: Regional Studies, 10.1016/j.ejrh.2015.03.006, 16 p.

[40] - Swanson, R.D.*, Binley, A., Keating, K., France, S.*, Osterman, G.*, Day-Lewis, F.D., Singha, K. (2015). Anomalous solute transport in saturated porous media: Relating transport model parameters to electrical and nuclear magnetic resonance properties. Water Resources Research, doi: 10.1002/2014WR015284, 20 p.

[39] - Parsekian, A., Singha, K., Minsley, B., Holbrook, S., and Slater, L. (2015). Multiscale geophysical imaging of the Critical Zone. Reviews of Geophysics, doi: 10.1002/2014RG000465, 26 p.

[38] - González-Pinzón, R., Ward, A.S., Hatch, C.E., Wlostowski, A. N.*, Singha, K., Gooseff, M.N., Haggerty, R., Harvey, J.W., Cirpka, O.A., and Brock, J. (2015). A field comparison of techniques to quantify surface water–groundwater interactions. Freshwater Science, doi: 10.1086/679738, 22 p.


[37] - Slim, M.*, Perron, J.T., Martel, S., Singha, K. (2014). Topographic stress and rock fracture: A two-dimensional numerical model for arbitrary topography and preliminary comparison with borehole observations. Earth Surface Processes and Landforms, doi: 10.1002/esp.3646, 18 p.

[36] - Singha, K., Day-Lewis, F.D., Johnson, T., and Slater, L.D. (2014). Advances in interpretation of subsurface processes with time-lapse electrical imaging. Hydrological Processes, doi: 10.1002/hyp.10280, 28 p.

[35] - Ward, A.S.*, Gooseff, M.N., Fitzgerald, M.#, Voltz, T.*, and Singha, K. (2014). Spatially distributed characterization of solute transport along hyporheic flow paths during baseflow recession in a headwater mountain stream. Journal of Hydrology, 517, doi:10.1016/j.jhydrol.2014.05.036, p. 362-377.


[34] - Larson, L.N.*, Fitzgerald, M.#, Singha, K., Gooseff, M.N., Macalady, J.L., and Burgos, W. (2013). Hydrogeochemical niches associated with hyporheic exchange beneath an acid mine drainage-contaminated stream. Journal of Hydrology, 501, http://dx.doi.org/10.1016/j.jhydrol.2013.08.007, p.163-174.

[33] - Ward, A.S.*, Gooseff, M.N., Voltz*, T.J., Fitzgerald, M.#, Singha, K., and Zarnetske, J.P. (2013). How does rapidly changing discharge during storm events affect transient storage and channel water balance in a headwater mountain stream? Water Resources Research, 49, doi:10.1002/wrcr.20434, 14 p.

[32] - Voltz, T.*, Gooseff, M.N., Ward, A.S.*, Singha, K., Fitzgerald, M.#, and Wagener, T. (2013). Riparian hydraulic gradient and stream water exchange dynamics in steep headwater valleys. Journal of Geophysical Research – Earth Surface Processes, 118, p 1-17, doi:10.1002/jgrf.20074, 17 p.


[31] - Swanson, R.*, Singha, K., Day-Lewis, F.D., Binley, A., Keating K., Haggerty, R. (2012). Direct geoelectrical evidence of mass transfer at the laboratory scale. Water Resources Research, 48, doi:10.1029/2012WR012431, 10 p.

[30] - Ward, A.S.*, Fitzgerald, M.#, Gooseff, M.N., Voltz, T.*, Binley A., and Singha, K. (2012). Hydrologic and geomorphic controls on hyporheic exchange during baseflow recession in a headwater mountain stream. Water Resources Research, 48, W04513, doi:10.1029/2011WR011461, 20 p. (Selected as an AGU Research Spotlight in 2012; WRR Editor's Choice Award in 2013) {Correction}

[29] - Ward, A.S.*, Gooseff, M.N. and Singha, K. (2012). How does subsurface characterization affect predictions of hyporheic exchange? Ground Water, doi: 10.1111/j.1745-6584.2012.00911.x, 15 p.


[28] - Pidlisecky, A., Singha, K., and Day-Lewis, F. D. (2011). A distribution-based parameterization for improved tomographic imaging of solute plumes. Geophysical Journal International, 187(1), doi: 10.1111/j.1365-246X.2011.05131.x, 11 p.

[27] - Kuntz, B.*, Rubin, S.*, Berkowitz, B., and Singha, K. (2011). Quantifying solute transport behavior at the Shale Hills Critical Zone Observatory. Vadose Zone Journal, 10, doi:10.2136/vzj2010.0130, 15 p.

[26] - Regberg, A.*, Singha K., Tien, M., Picardal, F., Zhang, Q., Schieber, J., Roden, E. and Brantley S. L. (2011). Electrical conductivity as an indicator of iron reduction rates in abiotic and biological systems. Water Resources Research, 47, W04509, doi:10.1029/2010WR009551, 14 p.

[25] - Singha, K., Li, L., Day-Lewis, F.D., and Regberg, A.B.* (2011). Quantifying solute transport processes: Are chemically “conservative” tracers electrically conservative? Geophysics, 76(1), doi: 10.1190/1.3511356, 11 p.


[24] - Ward, A.S.*, Gooseff, M.N., and Singha, K. (2010). Characterizing hyporheic transport processes--Interpretation of electrical geophysical data in coupled stream-hyporheic zone systems during solute tracer studies. Advances in Water Resources, doi:10.1016/j.advwatres.2010.05.008, 11 p.

[23] - Irving, J. and Singha, K. (2010). Stochastic inversion of tracer test and electrical geophysical data to estimate hydraulic conductivities. Water Resources Research, 46, W11514, doi:10.1029/2009WR008340, 16 p.

[22] - Singha, K. and Loheide, S.P. II. (2010). Linking physical and numerical modeling in hydrogeology using sand tank experiments and COMSOL Multiphysics. International Journal of Science Education, doi: 10.1080/09500693.2010.490570, 25 p.

[21] - Wheaton, D.D.* and Singha, K. (2010). Investigating the impact of advective and diffusive controls in solute transport on geoelectrical data. Journal of Applied Geophysics, doi:10.1016/j.jappgeo.2010.06.006, 10 p.

[20] - Ward, A.S.*, Gooseff, M.N. and Singha, K. (2010). Imaging hyporheic zone solute transport using electrical resistivity. Hydrological Processes, 24, doi: 10.1002/hyp.7672, p. 948-953.


[19] - Nimmo, J.R., Perkins, K.S., Schmidt, K.M., Stock, J.D., Miller, D.M. and Singha, K. (2009). Hydrologic characterization of desert soils with varying degrees of pedogenesis: I. Field experiments evaluating plant-relevant soil-water behavior. Vadose Zone Journal, 8(2), doi: 10.2136/vzj2008.0052, p. 480-495.

[18] - Mirus, B.B.#, Perkins, K.S., Nimmo, J.R. and Singha, K. (2009). Hydrologic characterization of desert soils with varying degrees of pedogenesis: II. Inverse modeling for effective properties. Vadose Zone Journal, 8(2), doi: 10.2136/vzj2008.0051, p. 496–509.


[17] - Robinson, D.A., A. Binley, N. Crook, F. Day-Lewis, P.T. Ferre, V.J.S. Grauch, R. Knight, M. Knoll, V. Lakshmi, R. Miller, J. Nyquist, L. Pellerin, K. Singha, L. Slater (2008). Advancing process-based watershed hydrological research using near-surface geophysics: A vision for, and review of, electrical and magnetic geophysical methods. Hydrological Processes, doi: 10.1002/hyp.6963, 32 p.

[16] - Singha, K., Pidlisecky, A., Day-Lewis, F.D., and Gooseff, M.N. (2008). Electrical characterization of non-Fickian transport in groundwater and hyporheic systems. Water Resources Research, 44, W00D07, doi:10.1029/2008WR007048, 14 p.

[15] - Day-Lewis, F.D. and Singha, K. (2008). Geoelectrical inference of mass transfer parameters: theoretical basis and numerical experiments. Water Resources Research, 44, W05201, doi:10.1029/2007WR006750, 6 p.

[14] - Singha, K. (2008). An active-learning exercise for introducing ground-water extraction from confined aquifers. Journal of Geoscience Education, 56(2), 131-134.

[13] - Culkin, S.L.*, Singha, K. , and Day-Lewis, F.D. (2008). Implications of rate-limited mass transfer for aquifer storage and recovery efficiency. Ground Water, doi: 10.1111/j.1745-6584.2008.00435.x, 15 p.


[12] - Hyndman, D.W., Day-Lewis, F.D., and Singha, K., editors (2007). Subsurface Hydrology: Data Integration for Properties and Processes. American Geophysical Union, Geophysical Monograph Series Volume 171, doi:10.1029/170GM01, 253 pp.

[11] - Day-Lewis, F.D., Chen, Y.*, and Singha, K. (2007). Moment inference from tomograms. Geophysical Research Letters, 34(22), L22404, doi:10.1029/2007GL031621, 6 p.

[10] - Singha, K. , Day-Lewis, F.D. and Lane, J.W., Jr. (2007). Geoelectrical evidence of bicontinuum transport in groundwater. Geophysical Research Letters, 34(12), L12401, doi:10.1029/2007GL030019, 5 p.

[9] - Singha, K. , Day-Lewis, F.D. and Moysey, S. (2007). Accounting for tomographic resolution in estimating hydrologic properties from geophysical data, in Subsurface Hydrology: Data Integration for Properties and Processes, eds. D.W. Hyndman, F.D. Day-Lewis, and K. Singha, American Geophysical Union, Geophysical Monograph Series Volume 171, doi:10.1029/170GM01, p. 227-242.

[8] - Tschakert, P. and Singha, K. (2007). Contaminated identities: mercury and marginalization in the artisanal mining sector in Ghana. Geoforum, 38, doi:10.1016/j.geoforum.2007.05.002, p. 1304-1321.


[7] - Singha, K. and Moysey, S. (2006). Accounting for spatially variable resolution in electrical resistivity tomography through field-scale rock physics relations. Geophysics, 71(4), p. A25-A28.

[6] - Singha, K. and Gorelick, S.M. (2006). Hydrogeophysical tracking of 3D tracer migration: the concept and application of apparent petrophysical relations. Water Resources Research, 42, W06422, doi:10.1029/2005WR004568, 14 p.

[5] - Singha, K. and Gorelick, S.M. (2006). Effects of spatially variable resolution on field-scale estimates of tracer concentration from electrical inversions using Archie's law. Geophysics, 71(3), p. G83-G91.

2005 and earlier

[4] - Day-Lewis, F.D., Singha K. , and Binley A. (2005). The application of petrophysical models to radar and electrical resistivity tomograms: resolution-dependent limitations. Journal of Geophysical Research, 110, B08206, doi: 10.1029/2004JB003569, 17 p.

[3] - Singha, K. and Gorelick, S.M. (2005). Saline tracer visualized with electrical resistivity tomography: field scale spatial moment analysis. Water Resources Research, 41, W05023, doi:10.1029/2004WR003460, 17 p.

[2] - Moysey, S., Singha K. , and Knight, R. (2005). Inferring field-scale rock physics relations through numerical simulation. Geophysical Research Letters, 32, L08304, doi:10.1029/2004GL022152, 4 p.

[1] - Williams, J.H., Lane, J.W. Jr., Singha, K. , and Haeni, F.P. (2002). Application and integration of advanced geophysical logging methods in the characterization of a fractured-sedimentary bedrock aquifer. U.S. Geological Survey Water-Resources Investigations Report 00-4083. 28 p.

data products
  • Briggs, M. A., Pai, H., Malenda, H., Randell, J., Singha, K., Tyler, S. W. and K. Williams (2017), Fiber-optic distributed temperature data collected along the streambed of the East River, Crested Butte, CO, USA: U.S. Geological Survey Data Release, doi: https://doi.org/10.5066/F7J9658M.
  • most other data available at DSpace

non-peer-reviewed publications (vision papers, conference proceedings, news articles, tutorials)

[17] - Mangel, A.#, Bradford, J.H. and Singha, K. (2018). Imaging changes in moisture within living tree trunks using ground-penetrating radar. Society of Exploration Geophysics Technical Program Extended Abstract, Oct 14-19, 2018, Anaheim, CA, Proceedings, 4 p.

[16] - Singha, K., Day-Lewis, F.D., and Briggs, M.A. (2018). Quantifying non-local solute transport behavior with electrical geophysics: a review. 8th International Conference on Environmental and Engineering Geophysics, June 10-13, 2018, Hangzhou, China, 4 p. Invited.

[15] - Singha, K. (2017). Geophysics is not a silver bullet, but worth a shot. Groundwater, invited editorial, doi: 10.1111/gwat.12495.

[14] - Voytek, E.*, Rushlow, C.*, Godsey, S., Singha, K. (2015) Identifying hydrologic flowpaths on arctic hillslopes using electrical resistivity and self potential. Society of Exploration Geophysics Technical Program Extended Abstract, Oct 18-23, 2015, New Orleans, Proceedings, 4 p.

[13] -Knight, R., Cannia, J., J. Fleming, R. Grimm, D. Heinze, C. Hobza, S. Huisman, J. Irving, A. Kemna, A. Menghini, B. Minsley, S. Moysey, F. Nguyen, J. Nyquist, A. Parsekian, D. Rucker, K. Singha, B. Smith, and J. van der Kruk. (2013). The State of the Science and a Vision of the Future: Report from the Hydrogeophysics Workshop. The Leading Edge, doi: 10.1190/tle32070814.1 v. 32 no. 7 p. 814-818.

[12] - Singha, K., Li, L., Day-Lewis, F.D. and Regberg, A.B.* (2012). Monitoring Tracers with Time-Lapse Electrical Methods: Issues with Reactions and Surface Conductance, Society of Exploration Geophysicists Technical Program Extended Abstract, November 2-4, 2012, Las Vegas, NV, Proceedings, 4 p.

[11] - Hagarty, J.*, Ward, A.*, Singha, K., and Gooseff, M.N. (2010). Electrical resistivity imaging to explore solute transport in a stream system, Proceedings of the Symposium on the Application of Geophysics to Engineering and Environmental Problems, April 11-15, 2010, Keystone, CO, Proceedings, 7 p.

[10] - Ferre, T., Bentley, L., Binley, A., Linde, N., Kemna, A., Singha, K., Holliger, K., Huisman, J., Minsley, B. (2009). Critical Steps for the Continuing Advancement of Hydrogeophysics. EOS, Transactions of the American Geophysical Union, 90 (23), p. 200.

[9] - Singha, K., Hyndman, D.W., and Day-Lewis, F.D. (2007). An introduction to subsurface hydrology: data integration for properties and processes, in Subsurface Hydrology: Data Integration for Properties and Processes, eds. D.W. Hyndman, F.D. Day-Lewis, and K. Singha, American Geophysical Union, Geophysical Monograph Series Volume 171, doi:10.1029/170GM01, p. 1-6.

[8] - Slater, L.D., Knight, R.J., Singha, K. , Binley, A. and Atekwana, E.A. (2006). Near Surface Geophysics: A new focus group. EOS, Transactions of the American Geophysical Union, 87 (25), p. 249.

[7] - Robinson, D.A., A. Binley, N. Crook, F. Day-Lewis, P.T. Ferré, V.J.S. Grauch, R. Knight, M. Knoll, V. Lakshmi, R. Miller, J. Nyquist, L. Pellerin, K. Singha , and L. Slater, (2006). A vision for geophysics instrumentation in watershed hydrological research, A Report to the Consortium of Universities for the Advancement of Hydrologic Sciences, 52 p.

[6] - Moysey, S., Knight, R.J. and Singha, K. (2006). Relating geophysical and hydrologic properties using field-scale rock physics. CMWR XVI -- Computational Methods in Water Resources, Copenhagen, Denmark. 8 p.

[5] - Singha, K. and Moysey, S. (2004). Application of a new Monte Carlo approach to calibrating rock physics relationships: examples using electrical resistivity and ground penetrating radar tomography, Proceedings of the Symposium on the Application of Geophysics to Engineering and Environmental Problems. 20 p.

[4] - Singha, K. (2003). Scanning the earth to help predict the movement of contaminants in groundwater. Stanford University Stanford Earth Sciences Report Fall 2003, 1 p.

[3] - Singha, K., Binley, A.M., Lane, J.W., Jr. and Gorelick, S.M. (2003). Electrical imaging of tracer migration at the Massachusetts Military Reservation, Cape Cod. Proceedings of the Symposium on the Application of Geophysics to Engineering and Environmental Problems. 11 p.

[2] - Singha, K. , Lane, J.W. Jr., and Kimball, K. (2000). Use of borehole-radar methods to characterize bedrock fractures and lithologic variations. U.S. Geological Survey Fact Sheet 054-00. 4 p.

[1] - Powers, C.J., Singha K., Haeni, F.P. (1999). Integration of surface geophysical methods for fracture detection in bedrock at Mirror Lake, New Hampshire, in Morganwalp, D.W. and Buxton, H.T., eds., USGS Toxic Substances Hydrology Program, Proceedings of the Technical Meeting. U.S. Geological Survey Water-Resources Investigations Report 99-4018C, 757-768.