Groundwater quality in the Biscayne aquifer, Florida
James A. Kingsbury
2020, Fact Sheet 2019-3056
Groundwater provides nearly 50 percent of the Nation’s drinking water. To help protect this vital resource, the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) Project assesses groundwater quality in aquifers that are important sources of drinking water (Burow and Belitz, 2014). The Biscayne aquifer constitutes one of the important...
Groundwater quality in the Ozark Plateaus aquifer system, central United States
James A. Kingsbury
2020, Fact Sheet 2019-3057
Groundwater provides nearly 50 percent of the Nation’s drinking water. To help protect this vital resource, the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) Project assesses groundwater quality in aquifers that are important sources of drinking water (Burow and Belitz, 2014). The Ozark Plateaus aquifer system constitutes one of...
Groundwater quality in the Columbia Plateau basaltic-rock aquifers, northwestern United States
MaryLynn Musgrove
2020, Fact Sheet 2019-3058
Groundwater provides nearly 50 percent of the Nation’s drinking water. To help protect this vital resource, the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) Project assesses groundwater quality in aquifers that are important sources of drinking water. The Columbia Plateau basaltic-rock aquifers constitute one of the important resources being...
Groundwater quality in the High Plains aquifer
MaryLynn Musgrove
2020, Fact Sheet 2019-3055
Groundwater provides nearly 50 percent of the Nation’s drinking water. To help protect this vital resource, the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) Project assesses groundwater quality in aquifers that are important sources of drinking water. The High Plains aquifer constitutes one of the important aquifers being evaluated....
Evaluation of water temperature effects on adult sockeye salmon (Oncorhynchus nerka) behavior in the Yakima River, Washington, 2019
Tobias J. Kock, Scott D. Evans, Amy C. Hansen, Brian K. Ekstrom, Richard Visser, Brian Saluskin, Paul Hoffarth
2020, Open-File Report 2020-1033
A study was conducted in the lower Yakima River, Washington, during June–October 2019 to evaluate water temperature effects on adult sockeye salmon (Oncorhynchus nerka) behavior. A total of 60 sockeye salmon adults were tagged with radio transmitters and monitored during the study. Fourteen of the fish were collected and...
Evaluation of restoration alternatives using hydraulic models of lake outflow at Wapato Lake National Wildlife Refuge, northwestern Oregon
Stewart A. Rounds, Stephen L. Pilson, Annett B. Sullivan, Adam J. Stonewall
2020, Scientific Investigations Report 2020-5014
Wapato Lake National Wildlife Refuge near the city of Gaston in northwestern Oregon was established in 2013, and planning is underway to restore a more natural lake and wetland system after more than 100 years of agricultural activity on the lakebed. Several water-management and restoration alternatives are under consideration, one...
Evaluation of restoration alternatives using water-budget tools for the Wapato Lake National Wildlife Refuge, northwestern Oregon
Stewart A. Rounds, T. Zach Freed, Daniel T. Snyder, Cassandra D. Smith, Micelis C. Doyle, Erin Holmes, Curt Mykut, Tim Mayer, Erin Stockenberg, Stephen L. Pilson
2020, Scientific Investigations Report 2020-5013
The lakebed in Wapato Lake National Wildlife Refuge (NWR) in northwestern Oregon was farmed for decades prior to the establishment of the refuge in 2013. Planning for restoration of these lands required extensive data collection and construction of a water budget and tools to design and evaluate potential restoration...
Hydrologic monitoring networks in the Death Valley Regional Flow System, Nye County, Nevada and Inyo County, California
Steven R. Reiner, Peggy E. Elliott, Katherine J. Earp, Wayne R. Belcher
2020, Fact Sheet 2020-3018
IntroductionWater is an important resource in the arid southwest region of the United States where there is a limited supply of surface water and groundwater. In the Death Valley regional groundwater flow system (DVRFS) in southern Nevada and eastern California, groundwater is the main source of supply for agricultural, commercial,...
Combining models of the critical streakline and the cross-sectional distribution of juvenile salmon to predict fish routing at river junctions
Dalton Hance, Russell Perry, Jon R. Burau, Aaron R. Blake, Paul Stumpner, Xiaochun Wang, Adam C. Pope
2020, San Francisco Estuary and Watershed Science (18)
Because fish that enter the interior Delta have poorer survival than those emigrating via the Sacramento River, understanding the mechanisms that drive entrainment rates at side channel junctions is critically important for the management of imperiled juvenile salmon. Here, we implement a previously proposed process-based conceptual model to study entrainment...
NGWA Groundwater Modeling Advisory Panel Survey on the Use of Uncertainty Analysis in Groundwater Modeling
Steve Luis, Pete Schulmeyer, David Bean, Connor P. Newman, Dan Puddephatt, Rodney A. Sheets, Randall J. Hunt
2020, Report
This white paper provides the results of a survey by members of the NGWA Groundwater Modeling Advisory Panel to assess the use of uncertainty analysis in groundwater modeling.The objective of the survey was to improve understanding of the use of uncertainty analysis in practical groundwater modeling projects subject to real-world...
Potential freshening impacts on fines migration and pore-throat clogging during gas hydrate production: 2-D micromodel study with Diatomaceous UBGH2 sediments
Junbong Jang, Shaung Cao, Laura A. Stern, William F. Waite, Jongwon Jung, Joo Yong Lee
2020, Marine and Petroleum Geology (116)
The methane gas hydrate stored in natural sediments is considered a potential gas resource. Countries such as China, India, Japan, and Korea are interested in commercializing this resource, and offshore field pilot tests for gas production have been conducted using depressurization methods to destabilize gas hydrate and facilitate the...
Bottom trawl assessment of Lake Ontario prey fishes, 2019
Brian Weidel, Brian O’Malley, Michael J. Connerton, Jeremy P. Holden, Christopher Osborne
2020, Report, NYSDEC Lake Ontario Annual Report 2019
Multi-agency, collaborative Lake Ontario bottom trawl surveys provide information for decision making related to Fish Community Objectives including predator-prey balance and understanding prey fish community diversity. In 2019, bottom trawl surveys in April (n = 252 tows) and October (n = 160 tows) sampled main lake and embayments at depths...
Comparing discharge computation methods in the Great Lakes connecting channels
Aaron F Thompson, Sandrina N Rodrigues, Jeanette C Fooks, Kevin Oberg, Tim J Calappi
2020, Journal of Hydrologic Engineering (25)
Records of discharge for the connecting channels within the Great Lakes Basin are important to national governments of Canada and the United States and the various water management agencies and users in the basin. For more than 100 years, the official discharge records for the St. Clair and...
Cascadia Margin cold seeps: Subduction zone fluids, gas hydrates, and chemosynthetic habitats
Amanda Demopoulos, Carolyn D. Ruppel, Nancy G. Prouty, Janet Watt, Tamara Baumberger, David A Butterfield
2020, Conference Paper, Workshop to identify national ocean exploration priorities in the Pacific: White paper submissions
Priority Geographic Area: The outer continental shelf and upper continental slope from Canada/U.S. border offshore Washington State to the Mendocino Fracture Zone (Northern California), entirely within the U.S. Exclusive Economic Zone (EEZ), from the outermost shelf to at least 2000 m water depth (Figure 1). Description of Priority Area: Since...
Mapping, exploration, and characterization of the California continental margin and associated features from the California-Oregon border to Ensenada, Mexico
Amanda Demopoulos, Nancy G. Prouty, Daniel S. Brothers, Janet Watt, James E. Conrad, Jason Chaytor, Chris Caldow
2020, Conference Paper, Workshop to identify national ocean exploration priorities in the Pacific: White paper submissions
Priority Geographic Area: Both within and outside US Exclusive Economic Zone (EEZ). California continental margin. This area includes and continues south of the geographic area captured in the Watt et al. white paper. Description of Priority Area: The California continental margin, from the narrow shelf to abyssal depths, contains diverse...
Hydrogeologic characterization of the Hualapai Plateau on the western Hualapai Indian Reservation, northwestern Arizona
Jon P. Mason, Jamie P. Macy, Donald J. Bills, Bruce Gungle, Casey J.R. Jones
2020, Scientific Investigations Report 2020-5025
This study was developed to assess if groundwater from the western Hualapai Plateau could be used to supply developments in the Grand Canyon West area of the Hualapai Indian Reservation and to collect hydrogeologic data for future use in a numerical groundwater model for the reservation. Ground-based geophysical surveys; existing...
Geology and hydrology of the Truxton basin and Hualapai Plateau, northwestern Arizona
Jon P. Mason, Donald J. Bills, Jamie P. Macy
Jon P. Mason, editor(s)
2020, Scientific Investigations Report 2020-5017-B
The geology of northwestern Arizona is prominently displayed on the canyon and cliff walls that compose the high-desert landscape of the Hualapai Plateau and that border the Truxton basin. The Truxton basin is a small topographic basin filled with Quaternary and Tertiary deposits and volcanic rock (about 1,600 feet thick...
Simulation of groundwater-level changes from projected groundwater withdrawals in the Truxton basin, northwestern Arizona
Jacob E. Knight
Jon P. Mason, editor(s)
2020, Scientific Investigations Report 2020-5017-E
A three-dimensional, numerical groundwater flow model of the Hualapai Plateau and Truxton basin was developed to assist water-resource managers in understanding the potential effects of projected groundwater withdrawals on groundwater levels and storage in the basin. The Truxton Basin Hydrologic Model (TBHM) is a transient model that simulates the hydrologic...
Gravity surveys and depth to bedrock in the Truxton basin, northwestern Arizona
Jeffrey R. Kennedy
Jon P. Mason, editor(s)
2020, Scientific Investigations Report 2020-5017-C
The volume of available groundwater and the effect of groundwater pumping in an alluvial basin is influenced in part by the shape and depth of the basin boundary, which commonly consists of low-permeability bedrock. To better understand the shape and depth of basin fill in the Truxton valley in Arizona,...
Groundwater availability in the Truxton basin, northwestern Arizona
Jon P. Mason, Jacob E. Knight, Lyndsay B. Ball, Jeffrey R. Kennedy, Jamie P. Macy, Donald J. Bills
Jon P. Mason, editor(s)
2020, Scientific Investigations Report 2020-5017-A
This is a summary chapter of a multichapter volume that includes a brief description of the study area and descriptions of the hydrogeologic framework, numerical groundwater-flow model, and estimates of simulated changes to groundwater levels of the Truxton aquifer....
A pan-African high-resolution drought index dataset
Jian Peng, Simon Dawdson, Firaya Hirpa, Ellen Dyer, Sergio Vicento-Serrano, Chris Funk
2020, Earth System Science Data (12) 753-769
Droughts in Africa cause severe problems, such as crop failure, food shortages, famine, epidemics and even mass migration. To minimize the effects of drought on water and food security on Africa, a high-resolution drought dataset is essential to establish robust drought hazard probabilities and to assess drought vulnerability considering a...
Seasonal habitat use indicates that depth may mediate the potential for invasive round goby impacts in inland lakes
Kara J. Andres, Suresh Sethi, Elizabeth Duskey, Jesse M. Lepak, Aaron N. Rice, Bobbi J. Estabrook, Kimberly B. Fitzpatrick, Ellen George, Benjamin Marcy-Quay, Matthew R. Paufve, Kelly Perkins, Anne E. Scofield
2020, Freshwater Biology (65) 1337-1347
The round goby (Neogobius melanostomus) is among the fastest-spreading introduced aquatic species in North America and is radiating inland from the Great Lakes into freshwater ecosystems across the landscape. Predicting and managing the impacts of round gobies requires information on the factors influencing their distribution in habitats along the...
Operational global actual evapotranspiration: Development, evaluation, and dissemination
Gabriel Senay, Stefanie Kagone, Naga M. Velpuri
2020, Article
Satellite-based actual evapotranspiration (ETa) is becoming increasingly reliable and available for various water management and agricultural applications from water budget studies to crop performance monitoring. The Operational Simplified Surface Energy Balance (SSEBop) model is currently used by the US Geological Survey (USGS) Famine Early Warning System Network (FEWS NET) to...
Hillslope groundwater discharges provide localized ecosystem buffers from regional PFAS contamination in a gaining coastal stream
Martin A. Briggs, Andrea K. Tokranov, Robert B. Hull, Denis R. LeBlanc, A. Haynes, John W. Lane Jr.
2020, Hydrological Processes (34) 2281-2291
Emerging groundwater contaminants such as per- and polyfluoroalkyl substances (PFAS) may impact surface-water quality and groundwater-dependent ecosystems of gaining streams. Although complex near-surface hydrogeology of stream corridors challenges sampling efforts, recent advances in heat tracing of discharge zones enable efficient and informed data collection. For this study we used a...
Climatically driven displacement on the Eglington fault, Las Vegas, Nevada
Kathleen B. Springer, Jeffrey S. Pigati
2020, Geology (48) 574-578
The Eglington fault is one of several intrabasinal faults in the Las Vegas Valley, Nevada and is the only one recognized as a source for significant earthquakes. Its broad warp displaces late Pleistocene paleo-spring deposits of the Las Vegas Formation, which record hydrologic fluctuations that occurred in response to millennial...
