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4723 results.

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Page 12, results 276 - 300

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Evaluation and review of best management practices for the reduction of polychlorinated biphenyls to the Chesapeake Bay
Trevor P. Needham, Emily H. Majcher, Ellie P. Foss, Olivia Devereux
2024, Scientific Investigations Report 2023-5074
Polychlorinated biphenyls (PCBs) continue to impact the environment due to historic and ongoing anthropogenic sources (for example, industrial and agricultural), despite their ban. Contaminated stormwater has been identified as a vector for PCB transport to many estuaries impaired by PCBs. Management of these regulated discharges is typically achieved by best...
Comparison of longitudinal stream temperature profiles and significant thermal features from airborne thermal infrared and float surveys of the Skykomish, Snoqualmie, and Middle Fork Snoqualmie Rivers, King and Snohomish Counties, Washington, summer 2020 and 2021
Daniel E. Restivo, Mousa Diabat, Chris Miwa, Valerie A.L. Bright
2024, Scientific Investigations Report 2023-5146
Summer water temperatures in the Skykomish, Snoqualmie, and Middle Fork Snoqualmie Rivers in western Washington have in recent decades exceeded the water temperature criteria for aquatic life uses set by the Washington Department of Ecology. This temperature increase is of particular concern because these rivers provide critical habitat for several...
Water-level and recoverable water in storage changes, High Plains Aquifer, predevelopment to 2019 and 2017 to 2019
Virginia L. McGuire, Kellan R. Strauch
2024, Scientific Investigations Report 2023-5143
The High Plains aquifer underlies 111.8 million acres (about 175,000 square miles) in parts of eight States: Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. Water-level declines began in parts of the High Plains aquifer soon after the beginning of substantial groundwater irrigation (about 1950). This report...
Effects of culverts on habitat connectivity in streams—A science synthesis to inform National Environmental Policy Act analyses
Richard J. Lehrter, Tait K. Rutherford, Jason B. Dunham, Aaron N. Johnston, David J.A. Wood, Travis S. Haby, Sarah K. Carter
2024, Scientific Investigations Report 2023-5132
The U.S. Geological Survey is working with Federal land management agencies to develop a series of science syntheses to support environmental effects analyses that agencies conduct to comply with the National Environmental Policy Act (NEPA). This report synthesizes science information about the potential effects of culverts on stream connectivity and...
Hydrologic analysis of an earthen embankment dam in southern Westchester County, New York
Anthony Chu, Michael L. Noll, William D. Capurso, Robert J. Welk
2024, Scientific Investigations Report 2023-5123
In 2001, the New York City Department of Environmental Protection installed 25 wells on the southern embankment of the Hillview Reservoir in Westchester County in an unsuccessful attempt to locate the source of a large seep (seep A) that began flowing continuously in 1999. In 2005, the U.S. Geological Survey...
An update of hydrologic conditions and distribution of selected constituents in water, eastern Snake River aquifer and perched groundwater zones, Idaho National Laboratory, Idaho, emphasis 2019–21
Kerri C. Treinen, Allison R. Trcka, Jason C. Fisher
2024, Scientific Investigations Report 2023-5128
Since 1952, wastewater discharged to infiltration ponds (also called “percolation ponds”) and disposal wells at the Idaho National Laboratory (INL) has affected water quality in the eastern Snake River Plain (ESRP) aquifer and perched groundwater zones underlying the INL. The U.S. Geological Survey (USGS), in cooperation with the U.S. Department...
Hydrology and water quality of a dune-and-swale wetland adjacent to the Grand Calumet River, Indiana, 2019–22
Shawn Naylor, Amy M. Gahala
2024, Scientific Investigations Report 2023-5122
Adverse ecological and water-quality effects associated with industrial land-use changes are common for littoral wetlands connected to river mouth ecosystems in the Grand Calumet River-Indiana Harbor Canal Area of Concern. These effects can be exacerbated by recent high Lake Michigan water levels that are problematic for wetland restoration. Wetlands in...
Isolation and identification of microcystin-degrading bacteria in Lake Erie source waters and drinking-water plant sand filters
Donna S. Francy, Jessica R. Cicale, Erin A. Stelzer, Dane C. Reano, Christopher D. Ecker
2024, Scientific Investigations Report 2023-5137
The increasing prevalence of cyanobacterial harmful algal blooms and the toxins they produce is a global water-quality issue. In the Western Basin of Lake Erie, high microcystin concentrations have led to water-quality advisories, process adjustments for treating drinking water, and increased water-quality monitoring. Biodegradation is an environmentally friendly and cost-effective...
Peak streamflow trends in Wisconsin and their relation to changes in climate, water years 1921–2020
Sara B. Levin
2024, Scientific Investigations Report 2023-5064-J
This study characterizes hydroclimatic variability and change in peak streamflow and daily streamflow in Wisconsin from water years 1921 through 2020. Nonstationarity in peak streamflow in Wisconsin can include monotonic trends, change points, and autocorrelation. Spatial patterns of nonstationarity in peak streamflow, daily streamflow, and monthly precipitation, temperature, and snowfall...
Peak streamflow trends and their relation to changes in climate in Illinois, Iowa, Michigan, Minnesota, Missouri, Montana, North Dakota, South Dakota, and Wisconsin
2024, Scientific Investigations Report 2023-5064
Flood-frequency analysis, also called peak-flow frequency or flood-flow frequency analysis, is essential to water resources management applications including critical structure design and floodplain mapping. Federal guidelines for doing flood-frequency analyses are presented in a U.S. Geological Survey Techniques and Methods report known as Bulletin 17C. A basic assumption within Bulletin...
Introduction and methods of analysis for peak streamflow trends and their relation to changes in climate in Illinois, Iowa, Michigan, Minnesota, Missouri, Montana, North Dakota, South Dakota, and Wisconsin
Karen R. Ryberg, Thomas M. Over, Sara B. Levin, David C. Heimann, Nancy A. Barth, Mackenzie K. Marti, Padraic S. O’Shea, Chris Sanocki, Tara Williams-Sether, Harper N. Wavra, T. Roy Sando, Steven K. Sando, Milan S. Liu
2024, Scientific Investigations Report 2023-5064-A
Flood-frequency analysis, also called peak-flow frequency or flood-flow frequency analysis, is essential to water resources management applications including critical structure design and floodplain mapping. Federal guidelines for doing flood-frequency analyses are presented in a U.S. Geological Survey Techniques and Methods Report known as Bulletin 17C. A basic assumption within Bulletin...
Water-quality indicators of surface-water-influenced groundwater supplies in the Ohio River alluvial aquifer of West Virginia
Mitchell A. McAdoo, Gregory T. Connock
2024, Scientific Investigations Report 2023-5139
The U.S. Geological Survey, in cooperation with the West Virginia Department of Health and Human Resources, studied surface-water-influenced groundwater supplies in the Ohio River alluvial aquifer of West Virginia for the purpose of understanding the influence of surface water on groundwater chemistry. Public groundwater supplies obtained from these aquifers receive...
Assessment of per- and polyfluoroalkyl substances in water resources of New Mexico, 2020–21
Rebecca E. Travis, Kimberly R. Beisner, Kate Wilkins, Jeramy Roland Jasmann, Steffanie H. Keefe, Larry B. Barber
2024, Scientific Investigations Report 2023-5129
Per- and polyfluoroalkyl substances (PFAS) have been detected in public and private drinking-water wells, springs, and surface waters in New Mexico; however, the presence and distribution of PFAS in water resources across the State are not well characterized. From August 2020 to October 2021, the U.S. Geological Survey, in cooperation...
Water-quality characteristics of the Red River of the North and tributaries in the Fargo-Moorhead metropolitan area, North Dakota, 2019–22
Joel M. Galloway, Rochelle A. Nustad, Spencer L. Wheeling
2024, Scientific Investigations Report 2023-5136
The Flood Risk Management Project was initiated in 2008 in the Fargo-Moorhead metropolitan area to reduce flood risk, flood damages, and flood protection costs in the Fargo-Moorhead metropolitan area. In cooperation with the U.S. Army Corps of Engineers, the U.S. Geological Survey initiated a water-quality monitoring study to describe the...
Flood of October 31 to November 3, 2019, in the East Canada Creek, West Canada Creek, and Sacandaga River basins in central New York
Alexander P. Graziano, Christopher L. Gazoorian, Travis L. Smith, Arthur G. Lilienthal III
2024, Scientific Investigations Report 2023-5126
Between October 31 and November 3, 2019, historic flooding in localized areas of the Mohawk Valley and southern Adirondack region in central New York State resulted in one fatality and an estimated $33 million in damages. Flooding resulted from high-intensity, hyperlocal rainfall in the region within a 24-hour period between...
Streamflow characterization and hydromodification, Indian and Kill Creek Basins, Johnson County, Kansas, 1985–2018
Teresa J. Rasmussen, Kyle E. Juracek, Patrick J. Eslick, Ken Eng, Lee J. Kellenberger
2024, Scientific Investigations Report 2023-5063
Urban stream restoration requires a quantitative understanding of hydromodification to provide a scientific basis for establishing, prioritizing, and monitoring stream quality improvement goals. A study by the U.S. Geological Survey, in cooperation with the Johnson County Urban stream restoration benefits from a quantitative understanding of hydromodification to provide a scientific...
A comparison of water-quality and stormwater inflow and outflow during habitat restoration at the McEwen storm drainage pond, South Valley, Albuquerque, New Mexico, 2020–22
R.E. Travis, C.A. Van Zante, N.Y. Montero, K. E. Miltenberger
2023, Scientific Investigations Report 2023-5144
In 2020, the U.S. Geological Survey began targeted monitoring, in partnership with Bernalillo County, at three locations within the McEwen storm drainage pond to evaluate and compare the water quality of stormwater as it enters and exits the study area, which is channelized and routes urban stormwater runoff through a...
Evaluation of stream capture related to groundwater pumping, Lower Humboldt River Basin, Nevada
Cara A. Nadler, Susan C. Rybarski, Hai Pham
2023, Scientific Investigations Report 2023-5110
The Humboldt River Basin is the only river basin that is contained entirely within the State of Nevada. The effect of groundwater pumping on the Humboldt River is not well understood. Tools are needed to determine stream capture and manage groundwater pumping in the Humboldt River Basin. The objective of...
Groundwater discharge by evapotranspiration from the Amargosa Wild and Scenic River and contributing areas, Inyo and San Bernardino Counties, California
Michael T. Pavelko, Nancy A. Damar
2023, Scientific Investigations Report 2023-5106
The Amargosa Wild and Scenic River, located in the southwestern Mojave Desert in Inyo and San Bernardino Counties, California, is a Federally protected waterway that supports the biodiversity of the region. Water in the river primarily comes from interbasin groundwater flow that originates as precipitation in the Spring Mountains. The...
Prediction of the probability of elevated nitrate concentrations at groundwater depths used for drinking-water supply in the Puget Sound basin, Washington, 2004–19
Robert W. Black, Elise E. Wright, Valerie A.L. Bright, Alex O. Headman
2023, Scientific Investigations Report 2023-5117
The Puget Sound basin encompasses the 13,700-square-mile area that drains to the Puget Sound and the adjacent marine waters of Washington State. Well more than 4 million people live within the basin, with numbers continuing to increase, who rely on the basin’s natural resources including groundwater. The Puget Sound Partnership...
Changes in phosphorus and suspended solids loading in the Fox River, northeastern Wisconsin, 1989–2021
Dale M. Robertson, Matthew W. Diebel, Sarah L. Bartlett, Kevin J. Fermanich
2023, Scientific Investigations Report 2023-5112
The entire Lower Fox River and inner bay of Green Bay, in northeastern Wisconsin, have been listed as impaired by the Wisconsin Department of Natural Resources (WDNR) for low dissolved oxygen and degraded habitat, with total phosphorus (TP) and total suspended solids (TSS) concentrations listed as the likely causes of...
Automated construction of Streamflow-Routing networks for MODFLOW—Application in the Mississippi Embayment region
Andrew T. Leaf
2023, Scientific Investigations Report 2023-5051
In humid regions with dense stream networks, surface water exerts a fundamental control on the water levels and flow directions of shallow groundwater. Understanding interactions between groundwater and surface water is critical for managing groundwater resources and groundwater-dependent ecosystems. Representing streams in groundwater models has historically been arduous and error...
Simulating groundwater flow in the Mississippi Alluvial Plain with a focus on the Mississippi Delta
Andrew T. Leaf, Leslie L. Duncan, Connor J. Haugh, Randall J. Hunt, James R. Rigby
2023, Scientific Investigations Report 2023-5100
The Mississippi Alluvial Plain has become one of the most important agricultural regions in the United States but relies heavily on groundwater for irrigation. On average, more than 12 billion gallons are withdrawn daily from the Mississippi River Valley alluvial aquifer. Declining groundwater levels, especially in the Delta region of...
Updated estimates of water budget components for the Mississippi Embayment Region using a soil-water-balance model, 2000–2020
Martha G. Nielsen, Stephen, M. Westenbroek
2023, Scientific Investigations Report 2023-5080
A Soil-Water-Balance (SWB) model for the Mississippi embayment region in Arkansas, Tennessee, Mississippi, and Louisiana was constructed and calibrated to gain insight into potential recharge patterns for the Mississippi River Valley alluvial aquifer, which has had substantial drawdown under intense pumping stress over the last several decades. An analysis of...
Trace metal and phosphorus loading from groundwater seepage into South Fork Coeur d’Alene River after remediation at the Bunker Hill Superfund Site, northern Idaho, 2022
Erin M. Murray, Lauren M. Zinsser
2023, Scientific Investigations Report 2023-5125
Widely dispersed waste products from historical mining in northern Idaho’s Coeur d’Alene mining district have long been a concern in the Coeur d’Alene River Basin in northern Idaho. The Central Impoundment Area (CIA), an unlined mining waste repository that is part of the Bunker Hill Superfund Site designated in 1983,...