Matthew Miller
Matt Miller is a Research Hydrologist with the Earth Systems Modeling Branch of the Integrated Modeling and Prediction Division in Boulder, Colorado.
His current research focuses on developing integrated approaches for assessing water availability, including novel approaches for interpreting large data sets to quantify the relationships between water quality, hydrology, land use, and climate at watershed, regional, and national scales. A major theme of Matt’s research is improving process-level understanding of groundwater-surface water interaction and incorporating this understanding into water budget and water quality models. Matt is currently the Project Manager for an Integrated Water Availability Assessment (IWAAs) project in the Upper Colorado River Basin. This project aims to provide insight into how past, present, and future snow conditions – including amount, timing, melt, and transitions from snow- to rain-dominated systems – impact water supply (quantity and quality) and the ability to meet demand.
Education and Certifications
Ph.D., Civil and Environmental Engineering, University of Colorado, Boulder (2008)
M.S., Civil and Environmental Engineering, University of Colorado, Boulder (2004)
B.S., Zoology, University of Wisconsin, Madison (2000)
Science and Products
Filter Total Items: 47
Temporal and spatial variations in river specific conductivity: Implications for understanding sources of river water and hydrograph separations Temporal and spatial variations in river specific conductivity: Implications for understanding sources of river water and hydrograph separations
Specific conductivity (SC) is commonly used to estimate the proportion of baseflow (i.e., waters from within catchments such as groundwater, interflow, or bank return flows) contributing to rivers. Reach-scale SC comparisons are also useful for identifying where multiple water stores contribute to baseflow. Daily SC values of adjacent gauges in Australian (the Barwon, Glenelg, and...
Authors
Ian Cartwright, Matthew P. Miller
Application of the RSPARROW modeling tool to estimate total nitrogen sources to streams and evaluate source reduction management scenarios in the Grande River Basin, Brazil Application of the RSPARROW modeling tool to estimate total nitrogen sources to streams and evaluate source reduction management scenarios in the Grande River Basin, Brazil
Large-domain hydrological models are increasingly needed to support water-resource assessment and management in large river basins. Here, we describe results for the first Brazilian application of the SPAtially Referenced Regression On Watershed attributes (SPARROW) model using a new open-source modeling and interactive decision support system tool (RSPARROW) to quantify the origin, flux...
Authors
Matthew P. Miller, Marcelo de Souza, Richard Alexander, Lillian Gorman Sanisaca, Alexandre de Amorim Teixeira, Alison Appling
Relating hydroclimatic change to streamflow, baseflow, and hydrologic partitioning in the Upper Rio Grande Basin, 1980 to 2015 Relating hydroclimatic change to streamflow, baseflow, and hydrologic partitioning in the Upper Rio Grande Basin, 1980 to 2015
Understanding how changing climatic conditions affect streamflow volume and timing is critical for effective water management. In the Rio Grande Basin of the southwest U.S., decreasing snowpack, increasing minimum temperatures, and decreasing streamflow have been observed in recent decades, but the effects of hydroclimatic changes on baseflow, or groundwater discharge to streams, have...
Authors
Christine Rumsey, Matthew P. Miller, Graham Sexstone
Response of nitrogen loading to the Chesapeake Bay to source reduction and land use change scenarios: A SPARROW‐informed analysis Response of nitrogen loading to the Chesapeake Bay to source reduction and land use change scenarios: A SPARROW‐informed analysis
In response to concerns regarding the health of streams and receiving waters, the United States Environmental Protection Agency established a total maximum daily load for nitrogen in the Chesapeake Bay watershed for which practices must be in place by 2025 resulting in an expected 25% reduction in load from 2009 levels. The response of total nitrogen (TN) loads delivered to the Bay to...
Authors
Matthew P. Miller, Paul Capel, Ana Garcia, Scott W. Ator
Salinity yield modeling of the Upper Colorado River Basin using 30-meter resolution soil maps and random forests Salinity yield modeling of the Upper Colorado River Basin using 30-meter resolution soil maps and random forests
Salinity loading in the Upper Colorado River Basin (UCRB) costs local economies upwards of $300 million US dollars annually. Salinity source models have generally included coarse spatial data to represent non‐agriculture sources. We developed new predictive soil property and cover maps at 30 m resolution to improve source representation in salinity modeling. Salinity loading erosion risk...
Authors
Travis Nauman, Christopher P. Ely, Matthew Miller, Michael Duniway
Monitoring the Riverine Pulse: Applying high-frequency nitrate data to advance integrative understanding of biogeochemical and hydrological processes Monitoring the Riverine Pulse: Applying high-frequency nitrate data to advance integrative understanding of biogeochemical and hydrological processes
Widespread deployment of sensors that measure river nitrate (NO3-) concentrations has led to many recent publications in water resources journals including review papers focused on data quality assurance, improved load calculations, and better nutrient management. The principal objective of this paper is to review and synthesize studies of high-frequency NO3- data that have aimed to...
Authors
Douglas A. Burns, Brian A. Pellerin, Matthew Miller, Paul Capel, Anthony Tesoriero, Jonathan Duncan
The role of baseflow in dissolved solids delivery to streams in the Upper Colorado River Basin The role of baseflow in dissolved solids delivery to streams in the Upper Colorado River Basin
Salinity has a major effect on water users in the Colorado River Basin, estimated to cause almost $300 million per year in economic damages. The Colorado River Basin Salinity Control Program implements and manages projects to reduce salinity loads, investing millions of dollars per year in irrigation upgrades, canal projects, and other mitigation strategies. To inform and improve...
Authors
Christine Rumsey, Matthew Miller, Gregory Schwarz, Robert Hirsch, David Susong
A database of natural monthly streamflow estimates from 1950 to 2015 for the conterminous United States A database of natural monthly streamflow estimates from 1950 to 2015 for the conterminous United States
Quantifying and understanding the natural streamflow regime, defined as expected streamflow that would occur in the absence of anthropogenic modification to the hydrologic system, is critically important for the development of management strategies aimed at protecting aquatic ecosystems. Water balance models have been applied frequently to estimate natural flows, but are limited in the...
Authors
Matthew Miller, Daren Carlisle, David Wolock, Michael Wieczorek
Stream‐centric methods for determining groundwater contributions in karst mountain watersheds Stream‐centric methods for determining groundwater contributions in karst mountain watersheds
Climate change influences on mountain hydrology are uncertain, but likely to be mediated through changes in subsurface hydrologic residence times and flowpaths. The heterogeneity of karst aquifers add complexity in assessing the resiliency of these water sources to perturbation, suggesting a clear need to quantify contributions from and losses to these aquifers. Here we develop a stream...
Authors
Bethany Neilson, Hyrum Tennant, Michelle Barnes, Trinity Stout, Matthew Miller, Rachel Gabor, Yusef Jameel, Mallory Millington, Andrew Gelderloos, Gabriel Bowen, Paul Brooks
Managing salinity in Upper Colorado River Basin streams: Selecting catchments for sediment control efforts using watershed characteristics and random forests models Managing salinity in Upper Colorado River Basin streams: Selecting catchments for sediment control efforts using watershed characteristics and random forests models
Elevated concentrations of dissolved-solids (salinity) including calcium, sodium, sulfate, and chloride, among others, in the Colorado River cause substantial problems for its water users. Previous efforts to reduce dissolved solids in upper Colorado River basin (UCRB) streams often focused on reducing suspended-sediment transport to streams, but few studies have investigated the...
Authors
Fred Tillman, David W. Anning, Julian Heilman, Susan Buto, Matthew Miller
Estimating discharge and nonpoint source nitrate loading to streams from three end‐member pathways using high‐frequency water quality data Estimating discharge and nonpoint source nitrate loading to streams from three end‐member pathways using high‐frequency water quality data
The myriad hydrologic and biogeochemical processes taking place in watersheds occurring across space and time are integrated and reflected in the quantity and quality of water in streams and rivers. Collection of high‐frequency water quality data with sensors in surface waters provides new opportunities to disentangle these processes and quantify sources and transport of water and...
Authors
Matthew Miller, Anthony Tesoriero, Krista Hood, Silvia Terziotti, David Wolock
Predicting redox-sensitive contaminant concentrations in groundwater using random forest classification Predicting redox-sensitive contaminant concentrations in groundwater using random forest classification
Machine learning techniques were applied to a large (n > 10,000) compliance monitoring database to predict the occurrence of several redox-active constituents in groundwater across a large watershed. Specifically, random forest classification was used to determine the probabilities of detecting elevated concentrations of nitrate, iron, and arsenic in the Fox, Wolf, Peshtigo, and...
Authors
Anthony J. Tesoriero, Jo Gronberg, Paul Juckem, Matthew Miller, Brian Austin
Non-USGS Publications**
Miller, M.P., D.M. McKnight, R. M. Cory, M. Williams, R. L. Runkel (2006) Hyporheic exchange and fulvic acid redox reactions in an alpine stream/wetland ecosystem, Colorado Front Range. Environmental Science and Technology, 40, 5943-5949
Gardner, E.M, D.M. McKnight, W.M. Lewis, M.P. Miller (2008) Effects of nutrient enrichment on phytoplankton in an alpine lake, Colorado, U.S.A. Arctic, Antarctic, and Alpine Research, 40(1), 55-64.
Tipping, E., H.T. Corbishley, J.F. Koprivnjak, D.J. Lapworth, M.P. Miller, C.D. Vincent, J. Hamilton Taylor (2009) Quantification of natural DOM from UV absorption at two wavelengths. Environmental Chemistry, 6, 472-476.
Miller, M.P., D.M. McKnight, J. Cullis, A. Greene, K. Vietti, D. Liptzin (2009) Factors controlling streambed coverage of Didymosphenia geminata in two regulated streams in the Colorado Front Range. Hydrobiologia, 630, 207-218.
Miller, M.P., D.M. McKnight, S.C. Chapra, M.W. Williams (2009) A model of degradation and production of three pools of dissolved organic matter in an alpine lake. Limnology and Oceanography, 54(6), 2213-2227.
Miller, M.P., D.M. McKnight, S.C. Chapra (2009) Production of microbially derived fulvic acid from photolysis of quinone-containing extracellular products of phytoplankton. Aquatic Sciences, 71, 170-178.
Flanagan, C.M., D.M. McKnight, D. Liptzin, M.W. Williams, M.P. Miller (2009) Response of the phytoplankton community in an alpine lake to drought conditions: Colorado Rocky Mountain Front Range, U.S.A. Arctic, Antarctic, and Alpine Research, 41(2), 191-203.
Fellman, J.B., M.P. Miller, R.M. Cory, D.V. D’Amore, D. White (2009) Characterizing dissolved organic matter using PARAFAC modeling of fluorescence spectroscopy: A comparison of two models. Environmental Science and Technology, 43, 6228-6234.
Mladenov, N., Y. Zheng, M.P. Miller, D.R. Nemergut, T. Legg, B. Simone, C. Hageman, M. M. Rahman, K. M. Ahmed, D.M. McKnight (2010) Dissolved organic matter sources and consequences for iron and arsenic mobilization in Bangladesh aquifers. Environmental Science and Technology, 44, 123-128.
Miller, M.P., B.E. Simone, D.M. McKnight, R.M. Cory, M.W. Williams, E.W. Boyer (2010) New light on a dark subject: Comment. Aquatic Sciences, 72: 269-275.
Miller, M.P., D.M. McKnight (2010) Comparison of seasonal changes in fluorescent dissolved organic matter among aquatic lake and stream sites in the Green Lakes Valley. Journal of Geophysical Research-Biogeosciences, 115, GOOF12, doi:10.1029/2009JG000985.
Cory, R.M., M.P. Miller, D.M. McKnight, J. Guerard, P. Miller (2010) Effect of instrument-specific response on the analysis of fulvic acid fluorescence spectra. Limnology and Oceanography Methods, 8, 67-78.
Brasher, A.M.D., C.M. Albano, R.N. Close, Q.H. Cannon, and M.P. Miller (2010) Macroinvertebrate communities and habitat characteristics in the northern and southern Colorado Plateau networks: Natural Resources Technical Report, NPS/NCPN/NRTR-2010/320, 107pp.
Brasher, A.M.D., T. Jones, A. Farahi, M.P. Miller, K. Kozar (2011) Pacific Islands Stream Monitoring Protocol: Fish, Shrimp, Snails, and Habitat Characterization. Natural Resources Technical Report, NPS/PACN/NRR-2011/468, 357pp.
Gabor, R., A. Baker, D.M. McKnight, M.P. Miller (2014) Fluorescence indices and their interpretation. In Coble, P.G, Lead, J., Baker, A., Reynolds, D.M, and Spencer, R.G.M., eds., Aquatic Organic Matter Fluorescence Cambridge University Press.
Georgek, J.L., D.K. Solomon, V.M. Heilweil, M.P. Miller (2018) Using tracer-derived groundwater transit times to assess storage within a high-elevation watershed of the Upper Colorado River Basin. Hydrogeol. J., 26, 467-480, doi:10.1007/s10040-017-1655-4.
Bowman, W.D., D.R. Nemergut, D.M. McKnight, M.P. Miller, M.W. Williams (2014) A slide down a slippery slope-alpine ecosystem responses to nitrogen deposition. Plant Ecology and Diversity, 8, 727-738, doi:10.1080/17550874.2014.984786
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 47
Temporal and spatial variations in river specific conductivity: Implications for understanding sources of river water and hydrograph separations Temporal and spatial variations in river specific conductivity: Implications for understanding sources of river water and hydrograph separations
Specific conductivity (SC) is commonly used to estimate the proportion of baseflow (i.e., waters from within catchments such as groundwater, interflow, or bank return flows) contributing to rivers. Reach-scale SC comparisons are also useful for identifying where multiple water stores contribute to baseflow. Daily SC values of adjacent gauges in Australian (the Barwon, Glenelg, and...
Authors
Ian Cartwright, Matthew P. Miller
Application of the RSPARROW modeling tool to estimate total nitrogen sources to streams and evaluate source reduction management scenarios in the Grande River Basin, Brazil Application of the RSPARROW modeling tool to estimate total nitrogen sources to streams and evaluate source reduction management scenarios in the Grande River Basin, Brazil
Large-domain hydrological models are increasingly needed to support water-resource assessment and management in large river basins. Here, we describe results for the first Brazilian application of the SPAtially Referenced Regression On Watershed attributes (SPARROW) model using a new open-source modeling and interactive decision support system tool (RSPARROW) to quantify the origin, flux...
Authors
Matthew P. Miller, Marcelo de Souza, Richard Alexander, Lillian Gorman Sanisaca, Alexandre de Amorim Teixeira, Alison Appling
Relating hydroclimatic change to streamflow, baseflow, and hydrologic partitioning in the Upper Rio Grande Basin, 1980 to 2015 Relating hydroclimatic change to streamflow, baseflow, and hydrologic partitioning in the Upper Rio Grande Basin, 1980 to 2015
Understanding how changing climatic conditions affect streamflow volume and timing is critical for effective water management. In the Rio Grande Basin of the southwest U.S., decreasing snowpack, increasing minimum temperatures, and decreasing streamflow have been observed in recent decades, but the effects of hydroclimatic changes on baseflow, or groundwater discharge to streams, have...
Authors
Christine Rumsey, Matthew P. Miller, Graham Sexstone
Response of nitrogen loading to the Chesapeake Bay to source reduction and land use change scenarios: A SPARROW‐informed analysis Response of nitrogen loading to the Chesapeake Bay to source reduction and land use change scenarios: A SPARROW‐informed analysis
In response to concerns regarding the health of streams and receiving waters, the United States Environmental Protection Agency established a total maximum daily load for nitrogen in the Chesapeake Bay watershed for which practices must be in place by 2025 resulting in an expected 25% reduction in load from 2009 levels. The response of total nitrogen (TN) loads delivered to the Bay to...
Authors
Matthew P. Miller, Paul Capel, Ana Garcia, Scott W. Ator
Salinity yield modeling of the Upper Colorado River Basin using 30-meter resolution soil maps and random forests Salinity yield modeling of the Upper Colorado River Basin using 30-meter resolution soil maps and random forests
Salinity loading in the Upper Colorado River Basin (UCRB) costs local economies upwards of $300 million US dollars annually. Salinity source models have generally included coarse spatial data to represent non‐agriculture sources. We developed new predictive soil property and cover maps at 30 m resolution to improve source representation in salinity modeling. Salinity loading erosion risk...
Authors
Travis Nauman, Christopher P. Ely, Matthew Miller, Michael Duniway
Monitoring the Riverine Pulse: Applying high-frequency nitrate data to advance integrative understanding of biogeochemical and hydrological processes Monitoring the Riverine Pulse: Applying high-frequency nitrate data to advance integrative understanding of biogeochemical and hydrological processes
Widespread deployment of sensors that measure river nitrate (NO3-) concentrations has led to many recent publications in water resources journals including review papers focused on data quality assurance, improved load calculations, and better nutrient management. The principal objective of this paper is to review and synthesize studies of high-frequency NO3- data that have aimed to...
Authors
Douglas A. Burns, Brian A. Pellerin, Matthew Miller, Paul Capel, Anthony Tesoriero, Jonathan Duncan
The role of baseflow in dissolved solids delivery to streams in the Upper Colorado River Basin The role of baseflow in dissolved solids delivery to streams in the Upper Colorado River Basin
Salinity has a major effect on water users in the Colorado River Basin, estimated to cause almost $300 million per year in economic damages. The Colorado River Basin Salinity Control Program implements and manages projects to reduce salinity loads, investing millions of dollars per year in irrigation upgrades, canal projects, and other mitigation strategies. To inform and improve...
Authors
Christine Rumsey, Matthew Miller, Gregory Schwarz, Robert Hirsch, David Susong
A database of natural monthly streamflow estimates from 1950 to 2015 for the conterminous United States A database of natural monthly streamflow estimates from 1950 to 2015 for the conterminous United States
Quantifying and understanding the natural streamflow regime, defined as expected streamflow that would occur in the absence of anthropogenic modification to the hydrologic system, is critically important for the development of management strategies aimed at protecting aquatic ecosystems. Water balance models have been applied frequently to estimate natural flows, but are limited in the...
Authors
Matthew Miller, Daren Carlisle, David Wolock, Michael Wieczorek
Stream‐centric methods for determining groundwater contributions in karst mountain watersheds Stream‐centric methods for determining groundwater contributions in karst mountain watersheds
Climate change influences on mountain hydrology are uncertain, but likely to be mediated through changes in subsurface hydrologic residence times and flowpaths. The heterogeneity of karst aquifers add complexity in assessing the resiliency of these water sources to perturbation, suggesting a clear need to quantify contributions from and losses to these aquifers. Here we develop a stream...
Authors
Bethany Neilson, Hyrum Tennant, Michelle Barnes, Trinity Stout, Matthew Miller, Rachel Gabor, Yusef Jameel, Mallory Millington, Andrew Gelderloos, Gabriel Bowen, Paul Brooks
Managing salinity in Upper Colorado River Basin streams: Selecting catchments for sediment control efforts using watershed characteristics and random forests models Managing salinity in Upper Colorado River Basin streams: Selecting catchments for sediment control efforts using watershed characteristics and random forests models
Elevated concentrations of dissolved-solids (salinity) including calcium, sodium, sulfate, and chloride, among others, in the Colorado River cause substantial problems for its water users. Previous efforts to reduce dissolved solids in upper Colorado River basin (UCRB) streams often focused on reducing suspended-sediment transport to streams, but few studies have investigated the...
Authors
Fred Tillman, David W. Anning, Julian Heilman, Susan Buto, Matthew Miller
Estimating discharge and nonpoint source nitrate loading to streams from three end‐member pathways using high‐frequency water quality data Estimating discharge and nonpoint source nitrate loading to streams from three end‐member pathways using high‐frequency water quality data
The myriad hydrologic and biogeochemical processes taking place in watersheds occurring across space and time are integrated and reflected in the quantity and quality of water in streams and rivers. Collection of high‐frequency water quality data with sensors in surface waters provides new opportunities to disentangle these processes and quantify sources and transport of water and...
Authors
Matthew Miller, Anthony Tesoriero, Krista Hood, Silvia Terziotti, David Wolock
Predicting redox-sensitive contaminant concentrations in groundwater using random forest classification Predicting redox-sensitive contaminant concentrations in groundwater using random forest classification
Machine learning techniques were applied to a large (n > 10,000) compliance monitoring database to predict the occurrence of several redox-active constituents in groundwater across a large watershed. Specifically, random forest classification was used to determine the probabilities of detecting elevated concentrations of nitrate, iron, and arsenic in the Fox, Wolf, Peshtigo, and...
Authors
Anthony J. Tesoriero, Jo Gronberg, Paul Juckem, Matthew Miller, Brian Austin
Non-USGS Publications**
Miller, M.P., D.M. McKnight, R. M. Cory, M. Williams, R. L. Runkel (2006) Hyporheic exchange and fulvic acid redox reactions in an alpine stream/wetland ecosystem, Colorado Front Range. Environmental Science and Technology, 40, 5943-5949
Gardner, E.M, D.M. McKnight, W.M. Lewis, M.P. Miller (2008) Effects of nutrient enrichment on phytoplankton in an alpine lake, Colorado, U.S.A. Arctic, Antarctic, and Alpine Research, 40(1), 55-64.
Tipping, E., H.T. Corbishley, J.F. Koprivnjak, D.J. Lapworth, M.P. Miller, C.D. Vincent, J. Hamilton Taylor (2009) Quantification of natural DOM from UV absorption at two wavelengths. Environmental Chemistry, 6, 472-476.
Miller, M.P., D.M. McKnight, J. Cullis, A. Greene, K. Vietti, D. Liptzin (2009) Factors controlling streambed coverage of Didymosphenia geminata in two regulated streams in the Colorado Front Range. Hydrobiologia, 630, 207-218.
Miller, M.P., D.M. McKnight, S.C. Chapra, M.W. Williams (2009) A model of degradation and production of three pools of dissolved organic matter in an alpine lake. Limnology and Oceanography, 54(6), 2213-2227.
Miller, M.P., D.M. McKnight, S.C. Chapra (2009) Production of microbially derived fulvic acid from photolysis of quinone-containing extracellular products of phytoplankton. Aquatic Sciences, 71, 170-178.
Flanagan, C.M., D.M. McKnight, D. Liptzin, M.W. Williams, M.P. Miller (2009) Response of the phytoplankton community in an alpine lake to drought conditions: Colorado Rocky Mountain Front Range, U.S.A. Arctic, Antarctic, and Alpine Research, 41(2), 191-203.
Fellman, J.B., M.P. Miller, R.M. Cory, D.V. D’Amore, D. White (2009) Characterizing dissolved organic matter using PARAFAC modeling of fluorescence spectroscopy: A comparison of two models. Environmental Science and Technology, 43, 6228-6234.
Mladenov, N., Y. Zheng, M.P. Miller, D.R. Nemergut, T. Legg, B. Simone, C. Hageman, M. M. Rahman, K. M. Ahmed, D.M. McKnight (2010) Dissolved organic matter sources and consequences for iron and arsenic mobilization in Bangladesh aquifers. Environmental Science and Technology, 44, 123-128.
Miller, M.P., B.E. Simone, D.M. McKnight, R.M. Cory, M.W. Williams, E.W. Boyer (2010) New light on a dark subject: Comment. Aquatic Sciences, 72: 269-275.
Miller, M.P., D.M. McKnight (2010) Comparison of seasonal changes in fluorescent dissolved organic matter among aquatic lake and stream sites in the Green Lakes Valley. Journal of Geophysical Research-Biogeosciences, 115, GOOF12, doi:10.1029/2009JG000985.
Cory, R.M., M.P. Miller, D.M. McKnight, J. Guerard, P. Miller (2010) Effect of instrument-specific response on the analysis of fulvic acid fluorescence spectra. Limnology and Oceanography Methods, 8, 67-78.
Brasher, A.M.D., C.M. Albano, R.N. Close, Q.H. Cannon, and M.P. Miller (2010) Macroinvertebrate communities and habitat characteristics in the northern and southern Colorado Plateau networks: Natural Resources Technical Report, NPS/NCPN/NRTR-2010/320, 107pp.
Brasher, A.M.D., T. Jones, A. Farahi, M.P. Miller, K. Kozar (2011) Pacific Islands Stream Monitoring Protocol: Fish, Shrimp, Snails, and Habitat Characterization. Natural Resources Technical Report, NPS/PACN/NRR-2011/468, 357pp.
Gabor, R., A. Baker, D.M. McKnight, M.P. Miller (2014) Fluorescence indices and their interpretation. In Coble, P.G, Lead, J., Baker, A., Reynolds, D.M, and Spencer, R.G.M., eds., Aquatic Organic Matter Fluorescence Cambridge University Press.
Georgek, J.L., D.K. Solomon, V.M. Heilweil, M.P. Miller (2018) Using tracer-derived groundwater transit times to assess storage within a high-elevation watershed of the Upper Colorado River Basin. Hydrogeol. J., 26, 467-480, doi:10.1007/s10040-017-1655-4.
Bowman, W.D., D.R. Nemergut, D.M. McKnight, M.P. Miller, M.W. Williams (2014) A slide down a slippery slope-alpine ecosystem responses to nitrogen deposition. Plant Ecology and Diversity, 8, 727-738, doi:10.1080/17550874.2014.984786
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.