Publications

Nimmo, J.R. and Perkins, K.S., 2018, Episodic master recession evaluation of groundwater and streamflow hydrographs for water-resource estimation, Vadose Zone Journal, 17:180050, doi:10.2136/vzj2018.03.0050. (PDF)
Perkins, K.S., Miller, D.M., Sandquist, D.R., Macias, M., and Roach, 2018, Ecohydrologic Changes caused by hydrologic disconnection of ephemeral stream channels in Mojave National Preserve, California, Vadose Zone J., 17:180022, doi:10.2136/vzj2018.01.0022.(PDF)
Perkins, K.S., Stock, J.D., and Nimmo, J.R., 2018, Vegetation influences on infiltration in Hawaiian soils, Ecohydrology, 11:e1973, doi:10.1002.eco1973. (PDF)
Trost, J.J., Perkins, K.S., Henson, W., Mirus, B.B., Nimmo, J.R. and Muñoz-Carpena, R., 2018, UZIG research: Measurement and characterization of unsaturated zone processes under wide-ranging climates and changing conditions, Vadose Zone J., 17:180198, doi:10.2136/vzj2018.11.0198. (PDF)
Nimmo, J.R., Creasey, K.M., Perkins, K.S., and Mirus, B.B., 2017, Preferential flow, diffuse flow, and perching in an interbedded fractured-rock unsaturated zone, Hydrogeology Journal, 2:25, doi:10.1007/s10040-016-1496-6. (PDF)
Ma, B., Liang, X., Liu, S., Jin, M., Nimmo, J.R., and Li, J., 2017, Evaluation of diffuse and preferential flow pathways of infiltratedprecipitation and irrigation using oxygen and hydrogen isotopes, Hydrogeology Journal, 3:25, doi:10.1007/s10040-016-1525-5. (PDF)
Nimmo, J.R., 2016, Quantitative framework for preferential flow initiation and partitioning: Vadose Zone Journal, v. 15, no. 2, doi:10.2136/vzj2015.05.0079. (PDF)
Nimmo, J.R., 2015, Preferential Flow—Stokes Approach to Infiltration and Drainage [Book review]: Vadose Zone Journal, v. 14, no. 7, doi:10.2136/vzj2013.03.0054. (PDF).
Nimmo, J.R., Horowitz, C., and Mitchell, L., 2015, Discrete-storm water-table fluctuation method to estimate episodic recharge: Groundwater, v.53, no. 2, doi: 10.1111/gwat.12177. (PDF)
Nimmo, J.R., and Malek-Mohammadi, S., 2015, Quantifying Water Flow and Retention in an Unsaturated Fracture-Facial Domain, in Faybishenko, B., Benson, S.M., and Gale, J.E., eds., Dynamics of Fluids and Transport in Fractured Porous Systems, Geophysical Monograph 210, AGU (Wiley), p. 169-179.(PDF)
Nimmo, J.R., Hermann, P.M., Kirkham, M.B., and Landa, E.R., 2014, Pollen Dispersal by Catapult—Experiments of Lyman J. Briggs on the Flower of Mountain Laurel: Physics in Perspective, v. 16, no. 3. (PDF) (Appendix material available here)

Perkins, K.S., Mirus, B.B., and Johnson, B.D., 2014, Measurement of unsaturated hydraulic properties and evaluation of property-transfer models for deep sedimentary interbeds, Idaho National Laboratory, Idaho: U.S. Geological Survey Scientific Investigations Report 2014–5206, 16 p. (PDF)
Perkins, K.S., Nimmo, J.R., Medeiros, A.C., Szutu, D.J., and von Allmen, E., 2014, Assessing effects of native forest restoration on soils moisture dynamics and potential aquifer recharge, Auwahi, Maui, Ecohydrology, DOI:10.1002/eco1469. (PDF)
Cuthbert, M.O., Mackay, R., and Nimmo, J.R., 2013, Linking soil moisture balance and source-responsive models to estimate diffuse and preferential components of groundwater recharge: Hydrology and Earth System Sciences, v. 17, no. 3, doi: 10.5194/hess-17-1003-2013, p. 1003-1019. (PDF)
Ebel, B.A., and Nimmo, J.R., 2013, An alternative process model of preferential contaminant travel times in the unsaturated zone--Application to Rainier Mesa and Shoshone Mountain, Nevada: Environmental Modeling and Assessment, v. 18, no. 3, doi: 10.1007/s10666-012-9349-8, p. 345-363. (PDF)
Mirus, B.B., and Nimmo, J.R., 2013, Balancing practicality and hydrologic realism--A parsimonious approach for simulating rapid groundwater recharge via unsaturated-zone preferential flow: Water Resources Research, v. 49, no. 3, 2012WR012130, doi: 10.1002/wrcr.20141, p. 1458–1465. (PDF)
Nimmo, J.R., 2013a, Porosity and Pore Size Distribution, Reference Module in Earth Systems and Environmental Sciences, Elsevier, doi: 10.1016/B978-0-12-409548-9.05265-9. (PDF).
Nimmo, J.R., 2013b, Aggregation--Physical Aspects, Reference Module in Earth Systems and Environmental Sciences, Elsevier, doi: 10.1016/B978-0-12-409548-9.05087-9.(PDF).
Nimmo, J.R., Mitchell, L., 2013, Predicting vertically nonsequential wetting patterns with a source-responsive model: Vadose Zone Journal, v. 12, no. 4. (PDF)
Nimmo, J.R., 2012, Response to “Comments on ‘Theory for Source-Responsive and Free-Surface Film Modeling of Unsaturated Flow’”: Vadose Zone Journal, v. 11, no. 4, doi: 10.2136/vzj2012.0044. (PDF)
Mirus, BB, K Perkins, 2012. Practical estimates of field-saturated hydraulic conductivity of bedrock outcrops using a modified bottomless bucket method, Water Resources Research, DOI:10.1029/2012WR012053. (PDF)
Nimmo, J.R., 2012, Preferential Flow Occurs in Unsaturated Conditions: Hydrological Processes, v. 26, no. 5, p. 786-789. (PDF)
Perkins, K. S., Nimmo, J.R., and Medeiros, A.C., 2012, Effects of native forest restoration on soil hydraulic properties, Auwahi, Maui, Hawaiian Islands: Geophysical Research Letters, 39:L05405 doi:10.1029/2012GL051120. (PDF)
Mirus, B.B., Ebel, B.A., Heppner, C.S., Loague, K., 2011, Assessing the detail needed to capture rainfall-runoff dynamics with physics-based hydrologic response simulation: Water Resources Research, v. 47, W00H10, doi:10.1029/2010WR009906. (PDF)
Mirus, B.B., Loague, K., Cristea, N.C., Burges, S.J., Kampf, S.K., 2011, A synthetic hydrologic-response dataset: Hydrological Processes. DOI: 10.1002/hyp.8185. (PDF)
Mirus, B.B., Perkins, K.S., and Nimmo, J.R., 2011, Assessing controls on perched saturated zones beneath the Idaho Nuclear Technology and Engineering Center, Idaho: U.S. Geological Survey Scientific Investigations Report 2011-5222 (DOE/ID-22216), 20 p. (PDF)
Perkins, K.S., 2011, Measurement and Modeling of Unsaturated Hydraulic Conductivity, in Hydraulic Conductivity - Issues, Determination and Applications, Lakshmanan Elango (Ed.), InTech Publishing, ISBN: 978-953-307-288-3. (PDF)
Perkins, K. S., Nimmo, J.R., Rose, C.E., Coupe, R.H., 2011, Field Tracer Investigation of Unsaturated Zone Flow Paths and Mechanisms in Agricultural Soils of Northwestern Mississippi, USA: Journal of Hydrology, v. 369, p. 1-11. (PDF)
Caputo, M.C., Carlo, L.D., Masciopinto, C., and Nimmo, J.R., 2010, Measurement of field-saturated hydraulic conductivity on fractured rock outcrops near Altamura (Southern Italy) with an adjustable large ring infiltrometer: Environmental Earth Science, v. 60, p. 583-590.
Ebel, B.A., and Nimmo, J.R., 2010, Simple estimation of fastest preferential contaminant travel times in the unsaturated zone: Application to Rainier Mesa and Shoshone Mountain, Nevada: Hydrology and Earth System Sciences Discussions, v. 7, no. 3, p. 3879-3930. (PDF)
Ebel, B.A., and NimmoJ.R., 2010, Hydraulic property and soil textural classification measurements for Rainier Mesa, Nevada Test Site, Nevada: U.S. Geological Survey Open-File Report 2009-1264, 17 p. (PDF)
Nimmo, J.R., 2010, Response to Germann's "Comment on 'Theory for Source-Responsive and Free-Surface Film Modeling of Unsaturated Flow'": Vadose Zone Journal, v. 9, no. 2, p. 1102–1104. (PDF)
Nimmo, J.R., 2010, Theory for Source-Responsive and Free-Surface Film Modeling of Unsaturated Flow: Vadose Zone Journal, v. 9, no. 2, p. 295–306. (PDF)
Ebel, B.A., and Nimmo, J.R., 2009, Estimation of unsaturated zone traveltimes for Rainier Mesa and Shoshone Mountain, Nevada Test Site, Nevada, using a source-responsive preferential-flow model: U.S. Geological Survey Open-File Report 2009-1175, 74 p. (PDF)
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 Unsaturated Hydraulic Properties: Vadose Zone Journal, v. 8, no. 2, p. 496–509. (PDF)
Nimmo, J.R., 2009, Vadose Water, in Likens, G.E., ed., Encyclopedia of Inland Waters: Oxford, UK, Elsevier, v. 1, p. 766-777. (PDF)
Nimmo, J.R., Andraski, B.J., and Muñoz-Carpena, R., 2009, UZIG/USGS Research--Advances through Interdisciplinary Interaction: Vadose Zone Journal, v. 8, no. 2, p. 411-413. (PDF)
Nimmo, J.R., Perkins, K.S., Schmidt, K.M., Miller, D.M., Stock, J.D., 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, v. 8, no. 2, p. 480–495. (PDF)
Nimmo, J.R., Schmidt, K.M., Perkins, K.S., and Stock, J.D., 2009, Rapid Measurement of Field-Saturated Hydraulic Conductivity for Areal Characterization: Vadose Zone Journal, v. 8, no. 1, p. 142-149. (PDF)
Perkins, K.S., and Nimmo, J.R., 2009, High-quality unsaturated zone hydraulic property data for hydrologic applications: Water Resour. Res., 45, W07417, doi:10.1029/2008WR007497. (PDF) Access data files here
Nimmo, J.R., 2008, The Public Fountains of the City of Dijon by H. Darcy--translated by P. Bobeck [Book Review]: Vadose Zone Journal, v. 7, no. 4, p. 1311-1312. (PDF)
Nimmo, J.R., and Perkins, K.S., 2008, Effect of soil disturbance on recharging fluxes--Case study on the Snake River Plain, Idaho National Laboratory, USA: Hydrogeology Journal, v. 16, no. 5, p. 829-844. (PDF)
Perkins, K.S., 2008, Laboratory-Measured and Property-Transfer Modeled Saturated Hydraulic Conductivity of Snake River Plain Aquifer Sediments at the Idaho National Laboratory, Idaho: USGS Scientific Investigations Report 2008–5169, 13 p. (PDF)
Wang, B., Jin, M., Yang, L., Wang, W., and Nimmo, J.R., 2008, Estimating Aquifer Recharge by Applied Tracer Method in Hebei Plain: Journal of Hydrology, v. 356, p. 209-222. (PDF)
Nimmo, J.R., Herkelrath, W.N., Laguna Luna, A.M., 2007, Physically Based Estimation of Soil Water Retention from Textural Data: General Framework, New Models, and Streamlined Existing Models: Vadose Zone Journal 6:766-773. (PDF)
Delin, G.N., Healy, R.W., Lorenz, D.L., and Nimmo, J.R., 2007, Comparison of local- to regional-scale estimates of ground-water recharge in Minnesota, USA: Journal of Hydrology, v. 334, no. 1-2, p. 231-249. (PDF)
Heppner, C.S., Nimmo, J.R., Folmar, G.J., Gburek, W.J., and Risser, D.W., 2007, Multiple-Methods Investigation of Recharge at a Humid-Region Fractured Rock Site, Pennsylvania, USA: Hydrogeology Journal. (PDF)
Nimmo, J.R., 2007, Simple Predictions of Maximum Transport Rate in Unsaturated Soil and Rock: Water Resources Research, v. 43, no. 5. (PDF)
Nolan, B.T., Healy, R.W., Taber, P.E., Perkins, K.S., Hitt, K.J., and Wolock, D.M., 2007, Factors influencing ground-water recharge in the eastern United States: Journal of Hydrology, v. 332, no. 1-2, p. 187-205. (PDF)
Perkins, K.S. and Winfield, K.A., 2007, Property transfer modeling to estimate unsaturated hydraulic conductivity of deep sediments at the Idaho National Laboratory, Idaho: U.S. Geological Survey Scientific Investigations Report 2007-5093, 22 p. (PDF)
Nimmo, J.R., and Perkins, K.S., 2006, Effect of soil disturbance on aquifer recharge--case study on the Snake River Plain, Idaho National Laboratory, USA, Full Papers, 34th Congress, Beijing, October 9-13, 2006, International Association of Hydrogeologists, CD.
Winfield, K.A., and Nimmo, J.R., 2006, Resolving structural influences on water-retention properties of alluvial deposits: Vadose Zone Journal, v. 5, p. 706-719.(PDF)
Caputo, M.C., and Nimmo, J.R., 2005, Quasi-steady centrifuge method for unsaturated hydraulic properties: Water Resources Research, v. 41, doi:10.1029/2005WR003957. (PDF)
Heppner, C.S., and John R. Nimmo, J.R., 2005, A computer program for predicting recharge with a master recession curve: U.S. Geological Survey Scientific Investigations Report 2005-5172, 8 p. (PDF)
Nimmo, J.R., 2005, Unsaturated Zone Flow Processes, in Anderson, M.G., and Bear, J., eds., Encyclopedia of Hydrological Sciences: Chichester, UK, Wiley, p. 2299-2322. (PDF)
Nimmo, J.R., Anderson, S.R., Bartholomay, R.C., Rousseau, J.P., and Knobel, L.L., 2005, Conceptual model of aqueous-phase fluid flow and contaminant transport, in Rousseau, J.P., Landa, E.R., and Nimmo, J.R., eds., Review of the transport of selected radionuclides in the Interim Risk Assessment for the Radioactive Waste Management Complex, Waste Area Group 7, Operable Unit 7-13/14, Idaho National Engineering and Environmental Laboratory, Idaho: USGS Scientific Investigations Report 2005-5026: Idaho Falls, USGS, p. 2-1--2-22, 2--4.
Nimmo, J.R., Healy, R.W., and Stonestrom, D.A., 2005, Aquifer Recharge, in Anderson, M.G., and Bear, J., eds., Encyclopedia of Hydrological Science: Chichester, UK, Wiley, p. 2229-2246. (PDF)
Nimmo, J.R., Kwicklis, E.M., Rousseau, J.P., Anderson, S.R., Bossong, C.R., and Curtis, G.P., 2005, Task 4--Transport model analysis, in Rousseau, J.P., Landa, E.R., and Nimmo, J.R., eds., Review of the transport of selected radionuclides in the Interim Risk Assessment for the Radioactive Waste Management Complex, Waste Area Group 7, Operable Unit 7-13/14, Idaho National Engineering and Environmental Laboratory, Idaho: USGS Scientific Investigations Report 2005-5026: Idaho Falls, USGS, p. 6-1--6-28, 39--64. (PDF)
Nimmo, J.R., and Landa, E.R., 2005, The soil-physics contributions of Edgar Buckingham: Soil Science Society of America Journal, v. 69, p. 328-342. (PDF)
Perkins, K.S., 2005, Recharge rates based on unsaturated zone measurements, New Jersey: San Jose State University, M.S. thesis, 87 p. (PDF)
Rousseau, J.P., Landa, E.R., Nimmo, J.R., Cecil, L.D., Knobel, L.L., Glynn, P.D., Kwicklis, E.M., Curtis, G.P., Stollenwerk, K.G., Anderson, S.R., Bartholomay, R.C., Bossong, C.R., and Orr, B.R., 2005, Review of the transport of selected radionuclides in the Interim Risk Assessment for the Radioactive Waste Management Complex, Waste Area Group 7, Operable Unit 7-13/14, Idaho National Engineering and Environmental Laboratory, Idaho: U.S. Geological Survey Scientific Investigations Report 2005-5026. ( Vol.1 PDF) ( Vol. 2 PDF)
Simunek, J., and Nimmo, J.R., 2005, Estimating soil hydraulic parameters from transient flow experiments in a centrifuge using parameter optimization technique: Water Resources Research, v. 41, no. 4, doi:10.1029/2004WR003379. (PDF)
Winfield, K.A., 2005, Development of Property-Transfer Models for Estimating the Hydraulic Properties of Deep Sediments at the Idaho National Engineering and Environmental Laboratory, Idaho: U.S. Geological Survey Scientific Investigations Report 2005-5114, 49 p. (PDF)
Heilweil, V.M., Solomon, D.K., Perkins, K.S., and Ellet, K.M., 2004, Gas-Partitioning Tracer Test to Quantify Trapped Gas During Recharge: Ground Water, v. 42, no. 4, p. 589-600. (PDF)
Nimmo, J.R., 2004, Porosity and Pore Size Distribution, in Hillel, D., ed., Encyclopedia of Soils in the Environment, Academic Press, London. (PDF)
Nimmo, J.R., 2004, Aggregation--Physical Aspects, in Hillel, D., ed., Encyclopedia of Soils in the Environment, Academic Press, London. (PDF)
Nimmo, J.R., Rousseau, J.P., Perkins, K.S., Stollenwerk, K.G., Glynn, P.D., Bartholomay, R.C., and Knobel, L.L., 2004, Hydraulic and geochemical framework of the Idaho National Engineering and Environmental Laboratory vadose zone: Vadose Zone Journal, vol. 3, p. 6-31. (PDF)
Baehr, A.L., Kaufman, L.J., Perkins, K.S., and Nolan, B.T., 2003, Estimating spatial variability of recharge in Southern New Jersey from unsaturated-zone measurements: U.S. Geological Survey Water-Resources Investigations Report 02-4288, 31 p.(PDF)
Landa, E.R., and Nimmo, J.R., 2003, The Life and Scientific Contributions of Lyman J. Briggs: Soil Science Society of America Journal, v. 67, no. 3, p. 681-693, cover, i. (PDF)
Nimmo, J.R., 2003, How fast does water flow in an unsaturated macropore? Evidence from field and lab experiments, in Álvarez-Benedí, J., and Marinero, P., eds., Estudios de la Zona No Saturada del Suelo, Vol. VI, VI, Instituto Tecnológico Agrario de Castilla y León, Valladolid Spain, p. 1-8.
Nimmo, J.R., Stonestrom, D.A., and Healy, R.W., 2003, Aquifer Recharge, in Stewart, B.A., and Howell, T.A., eds., Encyclopedia of Water Science: Agropedia, Marcel Dekker, New York, p. 22-25. (PDF)
Perkins, K.S., 2003, Measurement of sedimentary interbed hydraulic properties and their hydrologic influence near the Idaho Nuclear Engineering and Technology Center at the Idaho National Engineering and Environmental Laboratory: U.S. Geological Survey Water-Resources Investigations Report, 03-4048, 19 p. (PDF)
Winfield, K.A., 2003, Spatial variability of sedimentary interbed properties near the Idaho Nuclear Technology and Engineering Center at the Idaho National Engineering and Environmental Laboratory, Idaho: U.S. Geological Survey Water-Resources Investigations Report, 03-4142, 36 p. (PDF)
Su, G.W., Nimmo, J.R., and Dragila, M.I., 2003, Effect of isolated fractures on accelerated flow in unsaturated porous rock: Water Resources Research, v. 39, no. 12. (PDF)
Haverkamp, R., Reggiani, P., and Nimmo, J.R., 2002, Property-transfer models, in Dane, J.H., and Topp, G.C., eds., Methods of soil analysis, Part 4--Physical methods: Soil Science Society of America Book Series No. 5, Soil Science Society of America, Madison, Wisconsin, p. 759-761, 781-782. (PDF)
Nimmo, J.R., 2002, Meter-to-kilometer scaling of preferential flow in the unsaturated zone, in Findikakis, A.N., ed., Bridging the Gap between Measurements and Modeling in Heterogeneous Media--Proceedings of the International Groundwater Symposium, Berkeley, California, March 25-28, 2002: IAHR, Madrid, Spain, CD-ROM, 9 p.
Nimmo, J.R., 2002, What measurable properties can predict preferential flow?, in Kheoruenromne, I., ed., Transactions, 17th World Congress of Soil Science, Bangkok, August 14-21, 2002, International Union of Soil Science, Vienna, p. 324:1-11.
Nimmo, J.R., 2002, Property transfer from particle and aggregate size to water retention, in Dane, J.H., and Topp, G.C., eds., Methods of soil analysis, Part 4--Physical methods: Soil Science Society of America Book Series No. 5, Soil Science Society of America, Madison, Wisconsin, p. 777-782. (PDF)
Nimmo, J. R., 2002, Property-transfer models, in Dane, J.H. and Topp, G.C., eds., Methods of soil analysis, Part 4--Physical methods: Soil Science Society of America Book Series No. 5: Madison, Wisconsin, Soil Science Society of America, p. 759-761. (PDF)
Nimmo, J.R., 2002, Guidelines for method selection [water retention and storage], in Dane, J.H., and Topp, G.C., eds., Methods of soil analysis, Part 4--Physical methods: Soil Science Society of America Book Series No. 5, Soil Science Society of America, Madison, Wisconsin, p. 716-720.
Nimmo, J.R., Deason, J.A., Izbicki, J.A., and Martin, P., 2002, Evaluation of unsaturated-zone water fluxes in heterogeneous alluvium at a Mojave Basin site: Water Resources Research, v. 38, no. 10, p.33-1 - 33-13. (PDF)
Nimmo, J. R., and Perkins, K.S., 2002, Aggregate stability and size distribution, in Dane, J.H. and Topp, G.C., eds., Methods of soil analysis, Part 4--Physical methods: Soil Science Society of America Book Series No. 5: Madison, Wisconsin, Soil Science Society of America, p. 317-328. (PDF)
Nimmo, J.R., Perkins, K.S., and Lewis, A.M., 2002, Steady-state centrifuge [simultaneous determination of water transmission and retention properties], in Dane, J.H., and Topp, G.C., eds., Methods of soil analysis, Part 4--Physical methods: Soil Science Society of America Book Series No. 5, Soil Science Society of America, Madison, Wisconsin, p. 903-916.(PDF)
Nimmo, J.R., Perkins, K.S., Rose, P.A., Rousseau, J.P., Orr, B.R., Twining, B.V., and Anderson S.R., 2002, Kilometer-scale rapid transport of naphthalene sulfonate tracer in the unsaturated zone at the Idaho National Engineering and Environmental Laboratory: Vadose Zone Journal, v. 1, p. 89-101. (PDF)
Nimmo, J.R., and Winfield, K.A., 2002, Miscellaneous methods [water retention and storage], in Dane, J.H., and Topp, G.C., eds., Methods of soil analysis, Part 4--Physical methods: Soil Science Society of America Book Series No. 5, Soil Science Society of America, Madison, Wisconsin, p. 710-714. (PDF)
Perkins, K.S., Nimmo, J.R., Rose, P.A., Rousseau, J.P., Orr, B.R., Twining, B.V., and Anderson, S.R., 2002, Flow system analysis using a surface-applied tracer at the Idaho National Engineering and Environmental Laboratory, Idaho, U.S. Geological Survey Artificial Recharge Workshop Proceedings, Sacramento, CA, April 2-4, 2002: U.S. Geological Survey Open-File Report 02-89, p. 79-80. (PDF)
Winfield, K.A. and Nimmo, J. R., 2002, Water retention and storage-Controlled liquid volume, in Dane, J.H. and Topp, G.C., eds., Methods of soil analysis, Part 4--Physical methods: Soil Science Society of America Book Series No. 5: Madison, Wisconsin, Soil Science Society of America, p. 698-703. (PDF)
Nimmo, J.R., Perkins, K.S., Rose, P.A., Rousseau, J.P., Orr, B.R., Twining, B.V., and Anderson, S.R., 2001, Kilometer-scale rapid flow in a fractured-basalt unsaturated zone at the Idaho National Engineering and Environmental Laboratory, in Kueper, B.H., Novakowski, K.S., and Reynolds, D.A., eds., Fractured Rock 2001 Conference Proceedings, March 26-28, 2001, Toronto, Canada, CD-ROM, 4 p.
Su, G.W., J.T. Geller, K. Pruess, and J. R. Hunt, 2001, Solute transport along preferential flow paths in unsaturated fractures: Water Resources Research, vol. 37, no. 10, p.2481-2491.(PDF)
Su, G.W., Nimmo, J.R., and Dragila, M.I., 2001, Fluid flow mechanisms in an unsaturated porous rock containing a single fracture, in Kueper, B.H., Novakowski, K.S., and Reynolds, D.A., eds., Fractured Rock 2001 Conference Proceedings, March 26-28, 2001, Toronto, Canada, CD-ROM, 4 p.
Lewis, A.M., 2000, Recharge estimates obtained from centrifuge measurements, Abo Arroyo, New Mexico, San Jose State University, M.S., 71 p. (PDF)
Nimmo, J.R., Lewis, A.M., and Winfield, K.A., 2000, Discernable large- and small-scale features affecting recharge in Abo Arroyo and similar basins, in Cole, J.C., ed., U.S. Geological Survey Middle Rio Grande Basin Study--Proceedings of the Fourth Annual Workshop, Albuquerque, New Mexico, February 15-16, 2000: U.S. Geological Survey Open-File Report 00-488, p. 41-43. (PDF)
Perkins, K.S, 2000, Hydrologic and meteorological data for an unsaturated-zone study area near the Radioactive Waste Management Complex, Idaho National Engineering and Environmental Laboratory, Idaho, 1997 to 1999: U.S. Geological Survey Open-File Report 00-248, 10 p.
Perkins, K.S., and Nimmo, J.R., 2000, Measurement of hydraulic properties of the B-C interbed and their influence on contaminant transport in the unsaturated zone at the Idaho National Engineering and Environmental Laboratory: U.S. Geological Survey Water-Resources Investigations Report, 00-4073.
Winfield, K.A., 2000, Factors controlling water retention of alluvial deposits, western Mojave Desert: M.S. Thesis, San Jose State University, 88 p. (PDF)
Lewis, A.M., Nimmo, J. R., and Stonestrom, D.A., 1999, Recharge estimates interpreted from centrifuge hydraulic property measurements of core samples from Abo Arroyo, Middle Rio Grande Basin (MRGB), New Mexico; in Bartolino, J. R. ., ed., 1998, U.S. Geological Survey Middle Rio Grande Basin Study--Proceedings of the Third Annual Workshop, Albuquerque, New Mexico, February 24-25, 1999: U.S. Geological Survey Open-File Report 99-203, p. 69-70.
Morel-Seytoux, H.J., Nimmo, J.R., 1999, Soil water retention and maximum capillary drive from saturation to oven dryness: Water Resources Research, v. 35, p. 2031-2041. (PDF)
Nimmo, J.R., 1999, Accounting for fractures and other macropores in predictions of unsaturated hydraulic conductivity, in Faybishenko, B., ed., 1999, Dynamics of Fluids in Fractured Rocks: Concepts and recent advances, Proceedings of International Symposium in Honor of Paul Witherspoon, Berkeley, CA, February 10-12, 1999, LBNL-42718, p. 110-113.
Nimmo, J.R., 1999, Predicting soil-water retention and hydraulic conductivity from textural and structural information, in van Genuchten, M.Th. and Leij, F., eds., Direct and indirect methods of determining hydraulic properties of unsaturated soils, University of California Press, Part 2, p. 923-930.
Nimmo, J.R., Shakofsky, S.M., Kaminsky, J.F., and Lords, G.S., 1999, Laboratory and field hydrologic characterization of the shallow subsurface at an Idaho National Engineering Laboratory waste-disposal site, U.S. Geological Survey Water-Resources Investigations Report 99-4263.
Lewis, A.M. and Nimmo, J.R., 1998, Preliminary results of aquifer recharge estimates interpreted from centrifuge hydraulic property measurements, Abo Arroyo, Middle Rio Grandee Basin (MRGB), New Mexico, in Bartolino,J.R. and Slate, J.L., eds., 1998, U.S. Geological Survey Middle Rio Grande Basin Study—Proceedings of the Second Annual Workshop, Albuquerque, New Mexico, February 10-11, 1998: U.S. Geological Survey Open-File Report 98-337, p. 69-70.
Nimmo, J.R., 1998, Modeling structural effects on soil hydraulic properties,Proceedings of the 16th World Congress of Soil Science, Montpellier, France, August 20-26, 1998.
Perkins, K.S., Nimmo, J.R., and Pittman, J.R., 1998, Hydrologic and meteorological data for an unsaturated-zone study area near the Radioactive Waste Management Complex, Idaho National Engineering and Environmental Laboratory, Idaho, 1990-1996: U.S. Geological Survey Open-File Report 98-9, 19 p.and disk.
Deason, J. A., 1997, Groundwater recharge rate determination in the Mojave River Basin, B.S. honors thesis, Stanford University, 59 p.
Nimmo, J.R., 1997a, Recharging fluxes through layered alluvium: Centrifuge hydraulic property measurements interpreted by Darcian flow simulation, in Bartolino, J.R., ed., 1997, USGS Middle Rio Grande Basin Study-- Proceedings of the First Annual Workshop, Denver, Colorado, Nov. 12-14, 1996: USGS Open File Report 97-116, p. 45.
Nimmo, J.R., 1997b, Modeling structural influences on soil water retention: Soil Science Society of America Journal, v. 61, no. 3, p. 712-719. (PDF)
Nimmo, J.R., 1997c, Looking for the big picture: USGS research on arid-region hydrology in Morel-Seytoux, H.J., ed., 1997, Proceedings of the Seventeenth Annual American Geophysical Union Hydrology Days, Ft. Collins, Colorado, Apr. 14-18, 1997, p. 237-238.
Rossi, Cinzia, and Nimmo, J. R., 1996, Modelli modificati di curve di ritenzione idrica in mezzi porosi non saturi: Quaderni di Geologia Applicata, v. 3, p.127-136.
Shakofsky, S. M., and Nimmo, J. R., 1996, Unsaturated zone properties at a waste disposal site at the Idaho National Engineering Laboratory, in Morganwalp, D. W., and Aronson, D. A., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 94-4015, p. 949-953.
Nimmo, J.R., 1995, Measurement of unsaturated zone physical characteristics and water fluxes, in Stevens, P.R., and Nicholson, T.J., eds., Proceedings of the USGS-U.S. Nuclear Regulatory Commission Joint Technical Workshop on Research Related to Low-Level Radioactive Waste Disposal; Reston, Virginia, 1993: USGS Water-Resources Investigations Report 95-4015, p. 91-96.
Shakofsky, S. M., 1995, Changes in soil hydraulic properties caused by construction of a simulated waste trench at the Idaho National Engineering Laboratory, Idaho: U.S. Geological Survey Water-Resources Investigations Report 95-4058.
Nimmo, J. R., Stonestrom, D. A., and Akstin, K. C., 1994, The feasibility of recharge rate measurements using the steady state centrifuge method: Soil Science Society of America Journal, v. 58, p.49-56. (PDF)
Rossi, C., and Nimmo, J. R., 1994, Modeling of soil water retention from saturation to oven dryness: Water Resources Research, v.30, p. 701-708. (PDF)
Shakofsky, S. M., 1993, Changes in the hydraulic properties of a soil caused by construction of a waste trench at a radioactive waste disposal site: M.S. Thesis, San Jose State University, 53 p.
Nimmo, J. R., 1992, Semiempirical model of soil water hysteresis: Soil Science Society of America Journal, v. 56, p. 1723-173 (PDF)
Nimmo, J. R., Akstin, K. C., and Mello, K. A., 1992, Improved apparatus for measuring hydraulic conductivity at low water content: Soil Science Society of America Journal, v. 56, p. 1758-1761. (PDF)
Nimmo, J. R., 1991, Comment on the treatment of residual water content in "A consistent set of parametric models for the two-phase flow of immiscible fluids in the subsurface" by L. Luckner et al.: Water Resources Research, v. 27, p. 661-662. (PDF)
Nimmo, J. R. and Mello, K. A., 1991, Centrifugal techniques for measuring saturated hydraulic conductivity: Water Resources Research, v.27, p. 1263-1269. (PDF)
Nimmo, J.R., Stonestrom, D.A, and Rubin, J., 1991, Water flux in the unsaturated zone of deserts, in Trask, N.J. and Stevens, P.R., eds, USGS research in radioactive waste disposal--fiscal years 1986-1990: USGS Water-Resources Investigations Report 91-4084, p. 73-77.
Nimmo, J. R., 1990, Experimental testing of transient unsaturated flow theory at low water content in a centrifugal field: Water Resources Research, v. 26, p. 1951-1960. (PDF)
Nimmo, J. R. and Akstin, K. C., 1988, Hydraulic conductivity of a saturated soil at low water content after compaction by various methods: Soil Science Society of America Journal, v. 52, p. 303-310. (PDF)
Nimmo, J. R., Rubin, J., and Hammermeister, D. P., 1987, Unsaturated flow in a centrifugal field: measurement of hydraulic conductivity and testing of Darcy's law: Water Resources Research, v. 23, p. 124-134. (PDF)
Rubin, J., Hammermeister, D. P., Nimmo, J. R., 1987, Method and apparatus for steady-state measurement of liquid conductivity in porous media: U. S. Patent no. 4,679,422, 12 p.
Nimmo, J. R. and Miller, E. E., 1986, The temperature dependence of isothermal moisture-vs.-potential characteristics of soils: Soil Science Society of America Journal, v. 50, p. 1105-1113. (PDF)
Nimmo, J. R., l983, The temperature dependence of soil-moisture characteristics: Ph.D. thesis, University of Wisconsin-Madison, Dissertation Abstracts no. 83-17041, 144 p.
Nimmo, J. R., Miller, E. E., and Gardner, W. R., l980, Dynamic system for measuring soil-moisture characteristics at various temperatures: Wisconsin Water Resources Center Technical Report no. 80-11, 33 p.

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