Andrew H Manning
Andrew Manning is a Research Geologist with the Geology, Geophysics, and Geochemistry Science Center.
Andrew Manning has been a Research Geologist with the U.S. Geological Survey since 2002. His research is largely focused on using noble gases and other environmental tracers to study mountain groundwater flow systems. His recent work focuses more specifically on the transport of metals in groundwater in mineralized mountain areas, and has expanded to include studying the source and migration of ore fluids responsible for the formation of mineral deposits.
Education and Certifications
B.A. Earth Science, Wesleyan University, Middletown, CT
M.S. Geology, with focus in structural geology, University of Utah, Salt Lake City
Ph.D. Geology, with focus in hydrogeology, University of Utah, Salt Lake City
Science and Products
Implications of projected climate change for groundwater recharge in the western United States
Using noble gas tracers to constrain a groundwater flow model with recharge elevations: A novel approach for mountainous terrain
Insights into controls on hexavalent chromium in groundwater provided by environmental tracers, Sacramento Valley, California, USA
Links between climate change, water-table depth, and water chemistry in a mineralized mountain watershed
Using geochemistry to identify the source of groundwater to Montezuma Well, a natural spring in Central Arizona, USA: Part 2
Climate-change-driven deterioration of water quality in a mineralized watershed
Using dissolved gases to observe the evolution of groundwater age in a mountain watershed over a period of thirteen years
Mapping permeability over the surface of the Earth
Spring runoff water-chemistry data from the Standard Mine and Elk Creek, Gunnison County, Colorado, 2010
Classifying the water table at regional to continental scales
Potential climate change effects on water tables and pyrite oxidation in headwater catchments in Colorado
Mapping permeability over the surface of the Earth
Science and Products
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Filter Total Items: 41
Implications of projected climate change for groundwater recharge in the western United States
Existing studies on the impacts of climate change on groundwater recharge are either global or basin/location-specific. The global studies lack the specificity to inform decision making, while the local studies do little to clarify potential changes over large regions (major river basins, states, or groups of states), a scale often important in the development of water policy. An analysis of the pAuthorsThomas Meixner, Andrew H. Manning, David A. Stonestrom, Diana M. Allen, Hoori Ajami, Kyle W. Blasch, Andrea E. Brookfield, Christopher L. Castro, Jordan F. Clark, David Gochis, Alan L. Flint, Kirstin L. Neff, Rewati Niraula, Matthew Rodell, Bridget R. Scanlon, Kamini Singha, Michelle Ann WalvoordUsing noble gas tracers to constrain a groundwater flow model with recharge elevations: A novel approach for mountainous terrain
Environmental tracers provide information on groundwater age, recharge conditions, and flow processes which can be helpful for evaluating groundwater sustainability and vulnerability. Dissolved noble gas data have proven particularly useful in mountainous terrain because they can be used to determine recharge elevation. However, tracer-derived recharge elevations have not been utilized as calibratAuthorsJessica M. Doyle, Tom Gleeson, Andrew H. Manning, K. Ulrich MayerInsights into controls on hexavalent chromium in groundwater provided by environmental tracers, Sacramento Valley, California, USA
Environmental tracers are useful for determining groundwater age and recharge source, yet their application in studies of geogenic Cr(VI) in groundwater has been limited. Environmental tracer data from 166 wells located in the Sacramento Valley, northern California, were interpreted and compared to Cr concentrations to determine the origin and age of groundwater with elevated Cr(VI), and better uAuthorsAndrew H. Manning, Christopher T. Mills, Jean Morrison, Lyndsay B. BallLinks between climate change, water-table depth, and water chemistry in a mineralized mountain watershed
Recent studies suggest that climate change is causing rising solute concentrations in mountain lakes and streams. These changes may be more pronounced in mineralized watersheds due to the sensitivity of sulfide weathering to changes in subsurface oxygen transport. Specific causal mechanisms linking climate change and accelerated weathering rates have been proposed, but in general remain entirely hAuthorsAndrew H. Manning, Philip L. Verplanck, Jonathan S. Caine, Andrew S. ToddUsing geochemistry to identify the source of groundwater to Montezuma Well, a natural spring in Central Arizona, USA: Part 2
Montezuma Well is a unique natural spring located in a sinkhole surrounded by travertine. Montezuma Well is managed by the National Park Service, and groundwater development in the area is a potential threat to the water source for Montezuma Well. This research was undertaken to better understand the sources of groundwater to Montezuma Well. Strontium isotopes (87Sr/86Sr) indicate that groundwaterAuthorsRaymond H. Johnson, Ed DeWitt, Laurie Wirt, Andrew H. Manning, Andrew G. HuntClimate-change-driven deterioration of water quality in a mineralized watershed
A unique 30-year streamwater chemistry data set from a mineralized alpine watershed with naturally acidic, metal-rich water displays dissolved concentrations of Zn and other metals of ecological concern increasing by 100–400% (400–2000 μg/L) during low-flow months, when metal concentrations are highest. SO4 and other major ions show similar increases. A lack of natural or anthropogenic land disturAuthorsAndrew Todd, Andrew H. Manning, Philip L. Verplanck, Caitlin Crouch, Diane M. McKnight, Ryan DunhamUsing dissolved gases to observe the evolution of groundwater age in a mountain watershed over a period of thirteen years
Baseflows in snowmelt-dominated mountain streams are critical for sustaining ecosystems and water resources during periods of greatest demand. Future climate predictions for mountainous areas throughout much of the western U.S. include increasing temperatures, declining snowpacks, and earlier snowmelt periods. The degree to and rate at which these changes will affect baseflows in mountain streamsAuthorsAndrew H. ManningMapping permeability over the surface of the Earth
Permeability, the ease of fluid flow through porous rocks and soils, is a fundamental but often poorly quantified component in the analysis of regional‐scale water fluxes. Permeability is difficult to quantify because it varies over more than 13 orders of magnitude and is heterogeneous and dependent on flow direction. Indeed, at the regional scale, maps of permeability only exist for soil to depthAuthorsTom Gleeson, Leslie Smith, Nils Moosdorf, Jens Hartmann, Hans H. Durr, Andrew H. Manning, Ludovicus P. H. van Beek, A. Mark JellinekSpring runoff water-chemistry data from the Standard Mine and Elk Creek, Gunnison County, Colorado, 2010
Water samples were collected approximately every two weeks during the spring of 2010 from the Level 1 portal of the Standard Mine and from two locations on Elk Creek. The objective of the sampling was to: (1) better define the expected range and timing of variations in pH and metal concentrations in Level 1 discharge and Elk Creek during spring runoff; and (2) further evaluate possible mechanismsAuthorsAndrew H. Manning, Philip L. Verplanck, Alisa Mast, Joseph Marsik, R. Blaine McCleskeyClassifying the water table at regional to continental scales
Water tables at regional to continental scales can be classified into two distinct types: recharge-controlled water tables that are largely disconnected from topography and topography-controlled water tables that are closely tied to topography. We use geomatic synthesis of hydrologic, geologic and topographic data sets to quantify and map water-table type over the contiguous United States using aAuthorsTom Gleeson, Lars Marklund, Leslie Smith, Andrew H. ManningPotential climate change effects on water tables and pyrite oxidation in headwater catchments in Colorado
A water, energy, and biogeochemical model (WEBMOD) was constructed to simulate hydrology and pyrite oxidation for the period October 1992 through September 1997. The hydrologic model simulates processes in Loch Vale, a 6.6-km² granitic watershed that drains the east side of the Continental Divide. Parameters describing pyrite oxidation were derived sulfate concentrations measured in pore water andAuthorsRichard M. Webb, Alisa Mast, Andrew H. Manning, David W. Clow, Donald H. CampbellMapping permeability over the surface of the Earth
Permeability, the ease of fluid flow through porous rocks and soils, is a fundamental but often poorly quantified component in the analysis of regional‐scale water fluxes. Permeability is difficult to quantify because it varies over more than 13 orders of magnitude and is heterogeneous and dependent on flow direction. Indeed, at the regional scale, maps of permeability only exist for soil to depthAuthorsT. Gleeson, L. Smith, N. Moosdorf, J. Hartmann, H.H. Durr, Andrew H. Manning, L. P. H. Van Beek, A. Mark Jellinek - Web Tools