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...
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...
Steps to develop early warning systems and future scenarios of wave-driven flooding along coral reef-lined coasts
Gundula Winter, Curt D. Storlazzi, Sean Vitousek, Ap van Dongeren, Robert T. McCall, Ron Hoeke, William Skirving, John Marra, Johan Reyns, Jerome Aucan, Matthew J. Widlansky, Janet Becker, Chris Perry, Gerd Masselink, Ryan Lowe, Murray Ford, Andrew Pomeroy, Fernando J. Mendez, Ana C. Rueda, Moritz Wandres
2020, Frontiers in Marine Science (7)
Tropical coral reef-lined coasts are exposed to storm wave-driven flooding. In the future, flood events during storms are expected to occur more frequently and to be more severe due to sea-level rise, changes in wind and weather patterns, and the deterioration of coral reefs. Hence, disaster managers and coastal planners...
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...
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,...
Major hydrostratigraphic contacts of the Truxton basin and Hualapai Plateau, northwestern Arizona, developed from airborne electromagnetic data
Lyndsay B. Ball
Jon P. Mason, editor(s)
2020, Scientific Investigations Report 2020-5017-D
The area surrounding the Grand Canyon has spectacular outcrop exposure in the modern canyon walls, leading to stratigraphic contact delineations that are well constrained near canyons yet poorly constrained where the terrain remains undissected and relatively unexplored by boreholes. An airborne electromagnetic and magnetic survey of the western Hualapai Indian...
Transmitter effects on growth and survival of Forster’s tern chicks
Mark P. Herzog, Joshua T. Ackerman, C. Alex Hartman, Sarah H. Peterson
2020, Journal of Wildlife Management (84) 891-901
Radio‐telemetry is a commonly used scientific technique that allows researchers to collect detailed movement, habitat use, and survival data of animals; however, evidence indicates that using telemetry can affect behavior and survival. Using multiple breeding colonies and years, we investigated the effects of attached radio‐transmitters on growth and survival of...
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...
Movement-assisted localization from acoustic telemetry data
Nathan J. Hostetter, J. Andrew Royle
2020, Movement Ecology (8)
Acoustic telemetry technologies are being increasingly deployed to study a variety of aquatic taxa including fishes, reptiles, and marine mammals. Large cooperative telemetry networks produce vast quantities of data useful in the study of movement, resource selection and species distribution. Efficient use of acoustic telemetry data requires estimation of acoustic...
High-throughput sequencing reveals distinct regional genetic structure among remaining populations of an endangered salt marsh plant in California
Elizabeth R. Milano, Margaret R Mulligan, Jon P. Rebman, Amy G. Vandergast
2020, Conservation Genetics (21) 547-559
Conservation of rare species requires careful consideration to both preserve locally adapted traits and maintain genetic diversity, as species’ ranges fluctuate in response to a changing climate and habitat loss. Salt marsh systems in California have been highly modified and many salt marsh obligate species have undergone range reductions and...
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...
Pyrrhotite distribution in the conterminous United States, 2020
Jeffrey L. Mauk, Thomas C. Crafford, John D. Horton, Carma A. San Juan, Robinson Jr.
2020, Fact Sheet 2020-3017
In parts of Connecticut and Massachusetts, foundations of some homes are cracking and crumbling. Failing foundations can reduce the market value of a home and lifting a house to replace and repour a foundation is an expensive undertaking. In response, some homeowners are defaulting on their mortgages and abandoning their homes. The...
Odds ratios and hurdle models: a long-term analysis of parasite infection patterns in endangered young-of-the-year suckers from Upper Klamath Lake, Oregon, USA
Douglas F. Markle, Andrew Janik, James T. Peterson, Anindo Choudhury, David C. Simon, Vasyl V. Tkach, Mark R. Terwilliger, Justin L. Sanders, Michael L. Kent
2020, International Journal for Parasitology (50) 315-330
We used odds ratios and a hurdle model to analyze parasite co-infections over 25 years on >20,000 young-of-the year of endangered Shortnose and Lost River Suckers. Host ecologies differed as did parasite infections. Shortnose Suckers were more likely to be caught inshore and 3–5 times more likely to have Bolbophorus spp. and Contracaecum sp. infections,...
Effects of huisache removal on rangeland evapotranspiration in Victoria County, south-central Texas, 2015–18
Richard N. Slattery, Darwin J. Ockerman, Matthew Bromley, Justin Huntington, John R. Banta
2020, Scientific Investigations Report 2020-5008
The U.S. Geological Survey and Desert Research Institute, in cooperation with the Natural Resources Conservation Service, Texas State Soil and Water Conservation Board, Victoria County Groundwater Conservation District, Victoria Soil and Water Conservation District, and the San Antonio River Authority, evaluated the hydrologic effects of Vachellia farnesiana var. farnesiana (huisache)...
Identifying areas of degrading and improving groundwater-quality conditions in the State of California, USA, 1974-2014
Bryant C. Jurgens, Miranda S. Fram, Jeffrey Rutledge, George L. Bennett V
2020, Environmental Monitoring and Assessment (https://www.springer.com/journal/10661) (192)
Areas of improving and degrading groundwater-quality conditions in the State of California were assessed using spatial weighting of a new metric for scoring wells based on constituent concentrations and the direction and magnitude of a trend slope (Sen). Individual well scores were aggregated across 2135 equal-area grid cells covering the...
Low stand density moderates growth declines during hot droughts in semi-arid forests
Caitlin M. Andrews, Anthony W. D’Amato, Shawn Fraver, Brian Palik, Michael A. Battaglia, John B. Bradford
2020, Journal of Applied Ecology (57) 1089-1102
Increasing heat and aridity in coming decades is expected to negatively impact tree growth and threaten forest sustainability in dry areas. Maintaining low stand density has the potential to mitigate the negative effects of increasingly severe droughts by minimizing competitive intensity.However, the direct impact of stand density on the...
Quantifying background nitrate removal mechanisms in an agricultural watershed with contrasting subcatchment baseflow concentrations
Wesley O. Zell, Teresa B Culver, Ward E. Sanford, Jonathan L Goodall
2020, Journal of Environmental Quality (49) 392-403
Numerous studies have documented the linkages between agricultural nitrogen loads and surface water degradation. In contrast, potential water quality improvements due to agricultural best management practices are difficult to detect because of the confounding effect of background nitrate removal rates, as well as the groundwater-driven delay between land surface action...
Juvenile Lost River and shortnose sucker year-class formation, survival, and growth in Upper Klamath Lake, Oregon and Clear Lake Reservoir, California—2017 Monitoring Report
Ryan J. Bart, Summer M. Burdick, Marshal S. Hoy, Carl O. Ostberg
2020, Open-File Report 2020-1025
Executive SummaryPopulations of federally endangered Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) in Upper Klamath Lake, Oregon, and Clear Lake Reservoir (hereinafter referred to as Clear Lake; fig. 1), California, are experiencing long-term declines in abundance. Upper Klamath Lake populations are decreasing because juvenile suckers are not...
Li and Ca enrichment in the Bristol Dry Lake brine compared to brines from Cadiz and Danby Dry Lakes, Barstow-Bristol Trough, California, USA
Michael R. Rosen, Lisa L. Stillings, Tyler Kane, Kate M. Campbell, Matthew Vitale, Ray Spanjers
2020, Minerals (10)
Relatively few discharging playas in western United States extensional basins have high concentrations of lithium (Li) and calcium (Ca) in the basin-center brines. However, the source of both these ions is not well understood, and it is not clear why basins in close proximity within the same...
Egg and larval collection methods affect spawning adult numbers inferred by pedigree analysis
Robert D. Hunter, Edward F. Roseman, Nick M. Sard, Daniel B. Hayes, Travis O. Brenden, Robin L. DeBruyne, Kim T. Scribner
2020, North American Journal of Fisheries Management (40) 307-319
Analytical methods that incorporate genetic data are increasingly used in monitoring and assessment programs for important rate functions of fish populations (e.g., recruitment). Because gear types vary in efficiencies and effective sampling areas, results from genetic‐based assessments likely differ depending on the sampling gear used to collect genotyped individuals; consequently,...
Economic valuation of health benefits from using geologic data to communicate radon risk potential
Scott J. Chiavacci, Carl D. Shapiro, Emily Pindilli, Clyde F. Casey, Mary Kay Rayens, Amanda T. Wiggins, William M. Andrews Jr., Ellen J. Hahn
2020, Environmental Health (19)
Background: Radon exposure is the second leading cause of lung cancer worldwide and represents a major health concern within and outside the United States. Mitigating exposure to radon is especially critical in places with high rates of tobacco smoking (e.g., Kentucky, USA), as radon-induced lung cancer is markedly greater among...
