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Characterizing Meteor Crater impact melts through geochemistry and textural analysis
Amber L. Gullikson, Tenielle A. Gaither, Justin J. Hagerty
2025, Open-File Report 2024-1062
The U.S. Geological Survey Astrogeology Science Center houses the Meteor Crater sample collection, an assemblage of over 2,500 meters of cuttings from 161 drill holes into Meteor Crater’s rim, flanks, and ejecta blanket. We have utilized this unique collection to study the composition and spatial distribution of impact-generated materials from...
Potential water-quality and hydrology stressors on freshwater mussels with development of environmental DNA assays for selected mussels and macroinvertebrates in Big Darby Creek Basin, Ohio, 2020–22
Carrie A. Huitger, G.F. Koltun, Erin A. Stelzer, Lauren D. Lynch
2025, Scientific Investigations Report 2025-5005
The richness and abundance of freshwater mussels in the Big Darby Creek Basin has declined in recent decades, according to survey results published by the Ohio Biological Survey. In October 2016, a major mussel die-off of undetermined cause reportedly affected over 50 miles of Big Darby Creek; however, fishes and...
Data gap analysis for estimation of agricultural return flows in the Upper Gunnison River Basin, Colorado
Rachel G. Gidley, Quinn M. Miller, Wayne R. Belcher
2025, Open-File Report 2025-1009
The Gunnison River and many tributaries in the Upper Gunnison River Basin provide water to irrigate agricultural crops. The application of irrigation water can recharge some aquifers locally by water percolating below the root zone and eventually flowing back to the stream or river through the subsurface. Diverting surface water...
Suspended sediment and bedload transport along the Main and South Branches, Wild Rice River, northwestern Minnesota, 1979 through 2023
Joel T. Groten, Sara B. Levin, Gerald G. Storey, Erin N. Coenen, Jim D. Blount, J. William Lund, David J. Brannon
2025, Open-File Report 2025-1008
The geologic history and anthropogenic modifications of Minnesota’s Wild Rice River have caused major morphological adjustments, which induce erosion and excess fluvial sediment transport. The excess sediment deposits in the lower Wild Rice River, exacerbating flooding. To help mitigate these problems, the Wild Rice Watershed District has future plans to...
Managing for tomorrow—A climate adaptation decision framework
Kristen L. Bouska, Joshua Booker, Suzi Clark, John Delaney, Josh Eash, Max Post van der Burg, Heidi Roop
2025, Open-File Report 2025-1005
Climate change presents new and compounding challenges to natural resource management. With changing climate patterns, managers are confronted with difficult decisions on how to minimize climate effects on habitats, infrastructure, and wildlife populations. To support climate adaptation decision making, we first conceptualized an approach that integrates the principles of the...
Benthic habitat map of Olowalu Reef, Maui, Hawaii—Geomorphological structure, biological cover, and geologic zonation determined with spectral, lidar, and acoustic data
Liana N. Heberer, Kristen A. Alkins, Curt D. Storlazzi, Susan A. Cochran, Ann E. Gibbs, Russell Sparks, Kristy Stone, Itana Silva, Tatiana Martinez, Cole Peralto, Arielle S. Levine, Douglas Stow, Jillian Maloney
2025, Open-File Report 2025-1010
The fringing coral reef off Olowalu, Maui, Hawaii, has been identified as a local conservation priority site. In 2007, the National Oceanic and Atmospheric Administration (NOAA) produced a benthic habitat map of the Hawaiian Islands that was used as a foundation for this study. To support place-based management of the...
Identifying preferential flow from soil moisture time series: Review of methodologies
John R. Nimmo, Inge Wiekenkamp, Ryoko Araki, Jannis Groh, Nitin Singh, Octavia Crompton, Briana Wyatt, Hoori Ajami, Daniel Gimenez, Daniel Hirmas, Pamela Sullivan, Matthias Sprenger
2025, Vadose Zone Journal (24)
Identifying and quantifying preferential flow (PF) through soil—the rapid movement of water through spatially-distinct pathways in the subsurface—is vital to understanding how the hydrologic cycle responds to climate, land cover, and anthropogenic changes. In recent decades, methods have been developed that use measured soil moisture time series to identify PF....
Costs of land treatments on public lands in the western United States
James Meldrum, Christopher Huber, Adrian P. Monroe, Bryan C. Tarbox, Michelle Jeffries, David Pilliod, Cameron L. Aldridge
2025, Rangeland Ecology & Management (100) 99-110
Public land managers often conduct rehabilitation and restoration actions to achieve desired conditions or specific natural resource objectives. These “land treatments” include a variety of techniques, such as biomass removal or manipulation, seeding, and herbicide application. Limited information exists on the costs of conducting many common types of land treatments,...
Assessment of undiscovered oil and gas resources of the Los Angeles Basin Province, 2023
Christopher J. Schenk, Marilyn E. Tennyson, Tracey J. Mercier, Phuong A. Le, Andrea D. Cicero, Ronald M. Drake II, Sarah E. Gelman, Jane S. Hearon, Benjamin G. Johnson, Jenny H. Lagesse, Heidi M. Leathers-Miller, Kira K. Timm
2025, Fact Sheet 2024-3051
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 61 million barrels of oil and 240 billion cubic feet of gas in the Los Angeles Basin Province....
The mountains are calling, but will visitors go? Modeling the effect of weather and air quality on visitation to Pacific Northwest parks and protected areas using mobile device data
Kira Minehart, Ashley D'Antonio, Emily J. Wilkins
2025, PLOS Climate (4)
We investigated how visitors to federal, state, and local parks and protected areas (PPAs) respond to weather and air quality conditions in the Pacific Northwest (PNW), United States. Specifically, we modeled the relationship between weekly visitation and mean weekly minimum and maximum temperature, precipitation, Air Quality Index (AQI), and particulate...
Time of travel of releases from Lake Wallenpaupack to the U.S. Geological Survey’s streamgage monitoring location on the Delaware River at Montague, New Jersey
Jaclynne Polcino, John J. Trainor, Jerilyn V. Collenburg
2025, Scientific Investigations Report 2025-5026
In 2016, the U.S. Geological Survey (USGS) carried out a hydraulic study within the upper Delaware River Basin for the purpose of determining the time of travel for water releases from the Brookfield Renewable U.S. hydroelectric plant at Lake Wallenpaupack, Pennsylvania, to reach the USGS streamgage located on the Delaware...
Spatial and seasonal water-quality patterns and temporal water-quality trends in Lake Conroe on the West Fork San Jacinto River near Conroe, Texas, 1974–2021
Alexandra C. Adams
2025, Scientific Investigations Report 2025-5015
The impoundment of Lake Conroe in 1973 created an important water resource for greater Houston, Texas. The U.S. Geological Survey, in cooperation with the San Jacinto River Authority, analyzed water-quality data collected from 1974 to 2021 at upreservoir, mid-reservoir, and downreservoir sites in Lake Conroe. Water-column and seasonal variability of...
Healing ogaa (walleye Sander vitreus) waters: lessons and future directions for inland fisheries rehabilitation
Holly Susan Embke, Zachary S. Feiner, Gretchen Hansen, Joseph T. Mrnak, Christopher I. Rounds, Greg G. Sass, Stephanie L. Shaw, Aaron D. Shultz
2025, Reviews in Fisheries Science and Aquaculture
Culturally, economically, and nutritionally valuable inland fisheries face many new challenges on top of chronic disturbances. In the upper midwestern United States, declines in cool- and coldwater fisheries have been observed, including ogaa/walleye Sander vitreus. In response to population declines, agencies have implemented rehabilitation efforts and the frequency and intensity...
Variable phenology but consistent loss of ice cover of 1213 Minnesota lakes
Jake R Walsh, Christopher I. Rounds, Kelsey Vitense, Holly K. Masui, Kenneth A. Blumenfeld, Peter J. Boulay, Shyam M. Thomas, Andrew Edgar Honsey, Naomi S. Blinick, Claire L. Rude, Jonah A. Bacon, Ashley A. LaRoque, Tarciso C.C. Leao, Gretchen J.A. Hansen
2025, Limnology and Oceanography Letters
Lake ice cover is declining globally with important implications for lake ecosystems. Ice loss studies often rely on small numbers of lakes with long-term data. We analyzed variation and trends in ice cover phenology from 1,213 lakes over 74 years (1949-2022) in Minnesota (USA), during which ice cover duration declined...
Potential effects of chronic wasting disease and supplemental feeding on elk populations in Wyoming
Paul C. Cross, Todd G. Wojtowicz
2025, Fact Sheet 2024-3046
IntroductionIn 2023, the U.S. Geological Survey, in collaboration with the U.S. Department of Agriculture Forest Service and the U.S. Fish and Wildlife Service, evaluated the costs and benefits of supplemental elk (Cervus elaphus canadensis) feeding in western Wyoming. Elk supplemental feeding is intended to maintain elk populations in the winter...
The 3D Elevation Program—Supporting Rhode Island’s economy
Dan Walters
2025, Fact Sheet 2025-3018
Introduction  High-resolution elevation data are critical to applications of landscape modeling and planning, both of which have a significant effect on Rhode Island’s economy. In these and other enterprises, program managers, while aiming to strike a balance between accuracy and cost, strive to obtain the best available elevation data to...
Historical coast snaps: Using centennial imagery to track shoreline change
Fatima Valverde, Rui Taborda, Amy E. East, Cristina Ponte Lira
2025, Remote Sensing (p.)
Understanding long-term coastal evolution requires historical data, yet accessing reliable information becomes increasingly challenging for extended periods. While vertical aerial imagery has been extensively used in coastal studies since the mid-20th century, and satellite-derived shoreline measurements are now revolutionizing shoreline change studies, ground-based images, such as historical photographs and picture...
Application of Hydrologic Simulation Program—FORTRAN (HSPF) as part of an integrated hydrologic model for the Salinas Valley, California
Joseph A. Hevesi, Wesley R. Henson, Randall T. Hanson, Elizabeth Rae Jachens, Sandra Bond, Marisa Melody Earll, Deidre Herbert
2025, Scientific Investigations Report 2025-5009
The U.S. Geological Survey (USGS), in cooperation with the Monterey County Water Resources Agency, conducted studies to help evaluate the surface-water and groundwater resources of the Salinas Valley study area, consisting of the entire Salinas River watershed and several smaller, adjacent coastal watersheds draining into Monterey Bay. The Salinas Valley...
How quickly do brook trout lose long-term thermal acclimation?
Matthew J. O'Donnell, Amy M. Regish, S.D. McCormick, Benjamin Letcher
2025, Journal of Thermal Biology (129)
Abundances of coldwater adapted stream fish populations are declining largely due to anthropogenic influences, including increased temperature. To persist in streams with unsuitable thermal habitat, fish must move to coldwater patches, acclimate, or adapt to water temperatures above thermal optima. Brook trout, a coldwater adapted salmonid, has previously displayed physiological...
Sediment nutrient dynamics in selected Milwaukee metropolitan area streams, Wisconsin, 2022
Rebecca M. Kreiling, Lynn A. Bartsch, Kenna J. Gierke, Patrik M. Perner, Faith A. Fitzpatrick, Hayley T. Olds
2025, Scientific Investigations Report 2025-5012
The U.S. Geological Survey and Milwaukee Metropolitan Sewerage District in Wisconsin have an ongoing partnership to monitor water quality in streams in the Milwaukee metropolitan area and to assess the effects of stream restoration on habitat and water quality. Because sediment nutrient dynamics can improve or further impair water quality,...
A nationwide evaluation of crowd-sourced ambient temperature data
Priyanka deSouza, Peter Christian Ibsen, Daniel M. Westervelt, Ralph Kahn, Benjamin Zaitchik, Patrick Kinney
2025, Frontiers of Environmental Science and Engineering in China (13)
Growing concerns about heat in urban areas paired with the sparsity of weather stations have resulted in individuals drawing on data from citizen science sensor networks to fill in data gaps. The PurpleAir are the most widely-used low-cost air quality sensors in the contiguous United States with 14,777 deployed between...
Equilibrium line altitudes, accumulation areas, and the vulnerability of glaciers in Alaska
Lucas Zeller, Daniel J McGrath, Louis C. Sass, Caitlyn Florentine, Jacob Downs
2025, Journal of Glaciology (71)
The accumulation area ratio (AAR) of a glacier reflects its current state of equilibrium, or disequilibrium, with climate and its vulnerability to future climate change. Here, we present an inventory of glacier-specific annual accumulation areas and equilibrium line altitudes (ELAs) for over 3000 glaciers in Alaska and northwest Canada (88%...
Estimating indicators of cyanobacterial harmful algal blooms in New York State
Philip Savoy, Rebecca Michelle Gorney, Jennifer L. Graham
2025, Ecological Indicators (173)
Cyanobacteria harmful algal blooms (cyanoHABs) are a global concern for aquatic ecosystem and human health. Limited funding for monitoring programs and inconsistent determination of cyanoHAB occurrence present challenges for identifying commonly effective variables for characterizing cyanoHABs and the development of generalized models. We compiled a combination of water quality measurements,...
Fast or slow: An evaluation of Ti-in-quartz diffusion coefficients through comparisons of quartz and plagioclase diffusion times
Sophia Wang, Guilherme Gualda, Jordan Edward Lubbers, Adam Kent
2025, Volcanica (8) 189-202
Diffusion geochronometry using Ti-in-quartz has become a valuable method in understanding the evolution of silicic magmas. However, four different options for Ti diffusivity (DTi) currently exist, spanning three orders of magnitude, resulting in substantially different estimated times and interpretations. We present Ti-in-quartz diffusion times for the Cerro Galán Ignimbrite using...
Neural network-based temporal ensembling of water depth estimates derived from SuperDove Images
Milad Niroumand-Jadidi, Carl J. Legleiter, Francesca Bovolo
2025, Remote Sensing (17)
CubeSats provide a wealth of high-frequency observations at a meter-scale spatial resolution. However, most current methods of inferring water depth from satellite data consider only a single image. This approach is sensitive to the radiometric quality of the data acquired at that particular instant in time, which could be degraded...