Updating and recalibrating the integrated Santa Rosa Plain Hydrologic Model to assess stream depletion and to simulate future climate and management scenarios in Santa Rosa, Sonoma County, California
Ayman H. Alzraiee, Andrew Rich, Linda R. Woolfenden, Derek W. Ryter, Enrique Triana, Richard G. Niswonger
2025, Scientific Investigations Report 2024-5121
The Santa Rosa Plain Hydrologic Model (SRPHM) was developed and published in 2014 through a collaboration between the U.S. Geological Survey (USGS) and Sonoma Water to analyze the hydrologic system in the Santa Rosa Plain watershed, help meet the increasing demand for fresh water, and prepare for future uncertainties in...
Peak streamflow trends in Minnesota and their relation to changes in climate, water years 1921–2020
Tara Williams-Sether, Chris Sanocki
2025, Scientific Investigations Report 2023-5064-E
This report chapter summarizes the effect of hydroclimatic variability of annual peak streamflow in Minnesota and is part of a larger U.S. Geological Survey multistate study to assess potential nonstationarity in annual peak streamflows across the Midwest. Spatial and temporal patterns were examined for nonstationarity in annual peak streamflow, daily...
Peak streamflow trends in North Dakota and their relation to changes in climate, water years 1921–2020
Karen R. Ryberg, Tara Williams-Sether
2025, Scientific Investigations Report 2023-5064-H
Standardized guidelines for completing flood-flow frequency analyses are presented in a U.S. Geological Survey Techniques and Methods report known as Bulletin 17C, https://doi.org/10.3133/tm4B5. In recent decades (since about 2000), a better understanding of long-term climatic persistence (periods of clustered floods or droughts, or wet or dry periods) and...
Estimating agricultural irrigation water consumption for the High Plains aquifer region with integrated energy- and water-balance evapotranspiration modeling approaches
Lei Ji, Gabriel B. Senay, MacKenzie Friedrichs, Stefanie Kagone
2025, Agricultural Water Management (309)
Estimation of irrigation water use provides essential information for the management and conservation of agricultural water resources. Conventionally, water use data are created based on reports and surveys from water users, whereas manual records may not be complete due to lacking flow meters, measurement gaps, inconsistent methods across regions, and...
Continuous stream discharge, salinity, and associated data collected in the lower St. Johns River and its tributaries, Florida, 2022
Jennifer N. Carson, Matthew T. Benacquisto
2025, Open-File Report 2024-1076
The U.S. Army Corps of Engineers, Jacksonville District, deepened the St. Johns River channel in Jacksonville, Florida, to accommodate larger, fully loaded cargo vessels. The U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers, monitored stage, discharge, and (or) water temperature and salinity at 26 continuous...
2022 Volcanic activity in Alaska and the Northern Mariana Islands—Summary of events and response of the Alaska Volcano Observatory
Tim R. Orr, Hannah R. Dietterich, Ronni Grapenthin, Matthew M. Haney, Matthew W. Loewen, Pablo Saunders-Shultz, Darren Tan, Christopher F. Waythomas, Aaron G. Wech
2025, Scientific Investigations Report 2024-5108
In 2022, the Alaska Volcano Observatory responded to eruptions, volcanic unrest or suspected unrest, increased seismicity, and other significant activity at 11 volcanic centers in Alaska and in the Northern Mariana Islands. Eruptive activity in Alaska consisted of repeated small, ash-producing, phreatomagmatic explosions from Mount Young on Semisopochnoi Island; the...
Groundwater hydrology, groundwater and surface-water interactions, water quality, and groundwater-flow simulations for the Wet Mountain Valley alluvial aquifer, Custer and Fremont Counties, Colorado, 2017–19
Connor P. Newman, Cory A. Russell, Zachary D. Kisfalusi, Suzanne S. Paschke
2025, Scientific Investigations Report 2024-5105
In 2017, the U.S. Geological Survey, in cooperation with the Upper Arkansas Water Conservancy District, began a study to provide a comprehensive analysis of the Wet Mountain Valley alluvial aquifer, Custer and Fremont Counties, Colorado. The study included collection of data pertaining to groundwater hydrology, groundwater and surface-water interactions, and...
Methods to determine streamflow statistics based on data through water year 2021 for selected streamgages in or near Wyoming
Daniel W. Armstrong, David A. Lange, Katherine J. Chase
2025, Scientific Investigations Report 2024-5104
The U.S. Geological Survey (USGS), in cooperation with the Wyoming Water Development Office, developed streamflow statistics for streamgages in and near Wyoming. Statistics were computed for active (through September 30, 2021) and discontinued USGS streamgages with 10 or more years of daily mean streamflow record. Streamflow at each streamgage was...
Hydrogeologic framework of the Mountain Home area, southern Idaho
Lauren M. Zinsser, Scott D. Ducar
2025, Scientific Investigations Report 2024-5132
In the arid western Snake River Plain around the City of Mountain Home, Idaho, declining groundwater levels concern agricultural, municipal, and other water users who rely on groundwater for sustenance because surface-water resources are limited. The U.S. Geological Survey developed this hydrogeologic framework to provide an updated characterization of groundwater...
Groundwater-level elevations in the Denver Basin bedrock aquifers and Upper Black Squirrel Creek alluvial aquifer, El Paso County, Colorado, 2021–24
Zachary D. Kisfalusi, Erin K. Hennessy, Jackson B. Sharp
2025, Scientific Investigations Report 2024-5123
El Paso County is the second-most populous county in Colorado and is projected to grow another 15 percent by 2030. Within El Paso County is the Upper Black Squirrel Creek Designated Groundwater Basin (Black Squirrel Basin), an area where surface water is scarce and water users rely primarily on groundwater...
Review of the Lake Washington Ship Canal and Ballard Locks model, Seattle, Washington, 2014–20
Annett B. Sullivan, Anya C. Leach
2025, Open-File Report 2024-1078
Executive SummaryThe Hiram M. Chittenden (Ballard) Locks and Lake Washington Ship Canal connect freshwater Lake Washington and saline Shilshole Bay of Puget Sound in Seattle, Washington. The locks and canal allow for ships to traverse this reach. Anadromous salmonids also migrate through, transitioning between saline and freshwater environments, and making...
Thicknesses of lava flows in satellite images: Comparison of layered mare units with terrestrial analogs
M. Elise Rumpf, Heidi Needham, Sarah A. Fagents
2025, Icarus (350)
Recent advances in satellite imaging technology have greatly improved our observations of planetary surfaces. The Lunar Reconnaissance Orbiter (LRO) Narrow Angle Camera (NAC) records images with resolutions on average of 0.5 m per pixel, resolving meter scale features on the surface of the Moon. NAC images have revealed layered deposits, interpreted to...
Simulating present and future groundwater/surface-water interactions and stream temperatures in Beaver Creek, Kenai Peninsula, Alaska
Andrew T. Leaf, Megan J. Haserodt, Benjamin E. Meyer, Stephen, M. Westenbroek, Joshua C. Koch
2024, Scientific Investigations Report 2024-5126
In many places, coldwater ecosystems are facing increasing pressure from anthropogenic warming. This study examined stream temperatures and the water balance in the Beaver Creek watershed on the Kenai Peninsula in south-central Alaska—an area that is experiencing rapid warming. Low-gradient streams near the Kenai coast provide important spawning and rearing...
Hydrologic investigations and a preliminary conceptual model of the groundwater system at North Penn Area 1 Superfund Site, Souderton, Montgomery County, Pennsylvania
Lisa A. Senior, Dennis W. Risser, Daniel J. Goode, Philip H. Bird
2024, Open-File Report 2024-1080
The U.S. Geological Survey (USGS) conducted hydrogeologic investigations, reviewed existing data, and developed a preliminary conceptual model of the groundwater system as part of technical support of the U.S. Environmental Protection Agency (EPA) at the North Penn Area 1 Superfund Site (hereafter, the NP1 Site) located within the Borough of...
Iodine-129 in the eastern Snake River Plain aquifer at and near the Idaho National Laboratory, Idaho, 2021–22
Kerri C. Treinen, Allison R. Trcka, Nick Krohe, Genene Lehotsky
2024, Scientific Investigations Report 2024-5124
Between the 1950s and 1980s, wastewater generated at the Idaho National Laboratory contained Iodine-129 (129I); this wastewater was discharged directly into the eastern Snake River Plain (ESRP) aquifer through a deep disposal well, unlined infiltration ponds, or leaked from distribution systems below industrial facilities. During 2021–22, the U.S. Geological Survey,...
Evidence of nitrate attenuation in intertidal and subtidal groundwater in a subterranean estuary at a Cape Cod embayment, East Falmouth, Massachusetts, 2015–16
Thomas G. Huntington, Kevin D. Kroeger, Timothy D. McCobb, J.K. Bohlke, John A. Colman, Thomas W. Brooks, Beata Syzmczycha
2024, Scientific Investigations Report 2024-5100
Nitrogen dynamics in intertidal and nearshore subtidal groundwater (subterranean estuary) adjacent to the Seacoast Shores peninsula, Falmouth, Massachusetts, were investigated during 2015–16 by the U.S. Geological Survey. The peninsula is a densely populated residential area with septic systems and cesspools that are substantial sources of nitrogen to groundwater. The study...
Streamflow characteristics and trends in New Jersey, water years 1903–2017
Amy R. McHugh, Thomas P. Suro, Samantha L. Sullivan, Brianna Williams
2024, Scientific Investigations Report 2024-5099
As New Jersey’s population density remains high, so does its requirements for water management. Understanding the streamflow conditions throughout the state and how they may have changed over time is an important part of managing the water resources within the state. The New Jersey Department of Environmental Protection has many...
Flood-inundation maps for the Cuyahoga River at Jaite, Ohio, 2024
Matthew T. Whitehead, Chad J. Ostheimer
2024, Scientific Investigations Report 2024-5115
Digital flood-inundation maps for a nearly 6-mile reach of the Cuyahoga River at Jaite, Ohio, were created by the U.S. Geological Survey (USGS) in cooperation with the Northeast Ohio Regional Sewer District Board of Trustees. The maps depict estimates of the extent and depth of flooding corresponding to selected water...
A metapopulation strategy to support long term conservation of genetic diversity in Department of the Interior bison
Sara J. Oyler-McCance, Lee C. Jones, Blake McCann, Shawna J Zimmerman, Kathryn A. Schoenecker, Paul Santavy, Brendan J Moynahan
2024, Science Report NPS/SR—2024/229
Once numbering in the tens of millions, plains bison (Bison bison bison) were nearly driven to extinction with only a few hundred individuals remaining by the late 19th century. Plains bison have since recovered to approximately 20,000 animals managed in conservation herds throughout North America, yet substantial challenges to their...
Global survey of paleo-bedforms on Mars
Matthew Chojnacki, Lori K. Fenton, Lauren A. Edgar, Mackenzie D. Day, Christopher S. Edwards, Aaron R Weintraub, Amber L. Gullikson, Matt Telfer
2024, Geomorphology (466)
Sedimentary processes on Mars have contributed to a plethora of landforms, both ancient and modern. Many of these are aeolian- or fluvial-formed constructs that meet the morphologic criteria for dunes and ripples but are clearly lithified and part of the rock record. This study conducted a survey of Mars using...
Outmigration behavior and survival of juvenile Chinook salmon (Oncorhynchus tshawytscha) in response to deep drawdown of the Lookout Point Project, Middle Fork Willamette River, Oregon
Dalton J. Hance, Tobias J. Kock, Jake R. Kelley, Amy C. Hansen, Russell W. Perry, Scott D Fielding
2024, Open-File Report 2024-1069
An acoustic telemetry study was conducted during August 2023–February 2024 to evaluate outmigration behavior and survival of juvenile Chinook salmon (Oncorhynchus tshawytscha) in the Middle Fork Willamette River, Oregon, during an experimental operation that was designed to facilitate downstream passage through two reservoirs and two dams. The experimental operation consisted...
Mapping karst groundwater flow paths and delineating recharge areas for springs in the Little Sequatchie and Pryor Cove watersheds, Tennessee
Benjamin V. Miller
2024, Scientific Investigations Report 2024-5089
The Little Sequatchie River and Pryor Cove Branch, in southern Tennessee, drain the eastern escarpment of the Cumberland Plateau to the Sequatchie River near the southern end of the Sequatchie Valley. The Little Sequatchie River is the largest tributary to the Sequatchie River by drainage area, covering over 120 square...
Hydrodynamic model of the Colorado River, Glen Canyon Dam to Lees Ferry in Glen Canyon National Recreation Area, Arizona
Scott A. Wright, Matthew A. Kaplinski, Paul E. Grams
2024, Data Report 1197
The U.S. Geological Survey constructed a two-dimensional hydrodynamic model that was applied to a 15.8-mile tailwater reach of the Colorado River in Glen Canyon that begins 0.25 mile downstream from Glen Canyon Dam and extends to Lees Ferry in Glen Canyon National Recreation Area, Arizona. The model used the Flow...
High-Flow Experimental Outcomes to Inform Everglades Restoration, 2010–22
Judson W. Harvey, Jay Choi, Laurel Larsen, Katherine Skalak, Morgan Maglio, Katherine Quion, Tzu-Yao Lin, Allison Swartz, Jesus Gomez-Velez, Noah Schmadel
2024, Open-File Report 2024-1063
The Decompartmentalization Physical Model (DPM) was an experimental facility in the central Everglades operated between 2010 and 2022 to release high flows through a levee-enclosed area of degraded ridge and slough wetland that had been isolated from flow for sixty years. The purpose of DPM experimental program was to make...
Peak streamflow trends in South Dakota and their relation to changes in climate, water years 1921–2020
Nancy A. Barth, Steven K. Sando
2024, Scientific Investigations Report 2023-5064-I
Peak-flow (flood) frequency analysis is essential to water-resources management applications, including the design of critical infrastructure such as bridges and culverts, and floodplain mapping. Federal guidelines for performing peak-flow flood frequency analyses are presented in a U.S. Geological Survey Techniques and Methods Report known as Bulletin 17C. A basic assumption...
