A water-budget analysis of Medina and Diversion Lakes and the Medina/Diversion Lake system, with estimated recharge to Edwards aquifer, San Antonio area, Texas
Richard N. Slattery, Lisa D. Miller
2017, Scientific Investigations Report 2004-5209
In January 2001, the U.S. Geological Survey—in cooperation with the Edwards Aquifer Authority—began a study to refine and, if possible, extend previously derived (1995–96) relations between the stage in Medina Lake and recharge to the Edwards aquifer to include the effects of reservoir stages below 1,018 feet and greater than...
Streamflow and estimated loads of phosphorus and dissolved and suspended solids from selected tributaries to Lake Ontario, New York, water years 2012–14
Brett A. Hayhurst, Benjamin N. Fisher, James E. Reddy
2016, Scientific Investigations Report 2016-5084
This report presents results of the evaluation and interpretation of hydrologic and water-quality data collected as part of a cooperative program between the U.S. Geological Survey and the U.S. Environmental Protection Agency. Streamflow, phosphorus, and solids dissolved and suspended in stream water were the focus of monitoring by the U.S....
Nutrient, organic carbon, and chloride concentrations and loads in selected Long Island Sound tributaries—Four decades of change following the passage of the Federal Clean Water Act
John R. Mullaney
2016, Scientific Investigations Report 2015-5189
Trends in long-term water-quality and streamflow data from 14 water-quality monitoring sites in Connecticut were evaluated for water years 1974–2013 and 2001–13, coinciding with implementation of the Clean Water Act of 1972 and the Connecticut Nitrogen Credit Exchange program, as part of an assessment of nutrient and chloride concentrations and...
The Impacts of flow alterations to crayfishes in Southeastern Oklahoma, with an emphasis on the mena crayfish (orconectes menae)
Shannon K. Brewer, Joseph J. Dyer
2016, Report
Human activities can alter the environment to the point that it is unsuitable to the native species resulting in a loss of biodiversity. Ecologists understand the importance of biodiversity and the conservation of vulnerable species. Species that are narrowly endemic are considered to be particularly vulnerable because they often use...
Regional geophysics of western Utah and eastern Nevada, with emphasis on the Confusion Range
Edward A. Mankinen, Peter D. Rowley, Gary L. Dixon, Edwin H. McKee
2016, Book
As part of a long term geologic and hydrologic study of several regional groundwater flow systems in western Utah and eastern Nevada, the U.S. Geological Survey was contracted by the Southern Nevada Water Authority to provide geophysical data. The primary object of these data was to enable construction of the...
Establishing links between streamflow and ecological integrity in the Sudbury River (Northeastern U.S.)
Allison H. Roy, Stephen F. Jane, Peter D. Hazelton, Todd A. Richards, John T. Finn, Timothy O. Randhir
2016, Cooperator Science Series 122-2016
With increased pressure from a growing human population, managers are challenged to understand how novel disturbances (e.g., climate change, increased water withdrawals, urbanization) may affect natural resources. The Sudbury River is a National Wild and Scenic River located in suburban Boston, Massachusetts (Northeastern US) with myriad impairments (e.g., mainstem impoundments,...
Continuous-flow centrifugation to collect suspended sediment for chemical analysis
Kathleen E. Conn, Richard S. Dinicola, Robert W. Black, Stephen E. Cox, Richard W. Sheibley, James R. Foreman, Craig A. Senter, Norman T. Peterson
2016, Techniques and Methods 1-D6
Recent advances in suspended-sediment monitoring tools and surrogate technologies have greatly improved the ability to quantify suspended-sediment concentrations and to estimate daily, seasonal, and annual suspended-sediment fluxes from rivers to coastal waters. However, little is known about the chemical composition of suspended sediment, and how it may vary spatially between...
Evaluating external nutrient and suspended-sediment loads to Upper Klamath Lake, Oregon, using surrogate regressions with real-time turbidity and acoustic backscatter data
Liam N. Schenk, Chauncey W. Anderson, Paul Diaz, Marc A. Stewart
2016, Scientific Investigations Report 2016-5167
Executive SummarySuspended-sediment and total phosphorus loads were computed for two sites in the Upper Klamath Basin on the Wood and Williamson Rivers, the two main tributaries to Upper Klamath Lake. High temporal resolution turbidity and acoustic backscatter data were used to develop surrogate regression models to compute instantaneous concentrations and...
Survival of juvenile chinook salmon and coho salmon in the Roza Dam fish bypass and in downstream reaches of the Yakima River, Washington, 2016
Tobias J. Kock, Russell W. Perry, Amy C. Hansen
2016, Open-File Report 2016-1210
Estimates of juvenile salmon survival are important data for fishery managers in the Yakima River Basin. Radiotelemetry studies during 2012–14 showed that tagged juvenile Chinook salmon (Oncorhynchus tshawytscha) that passed through the fish bypass at Roza Dam had lower survival than fish that passed through other routes at the dam....
Sources of groundwater and characteristics of surface-water recharge at Bell, White, and Suwannee Springs, Florida, 2012–13
John F. Stamm, W. Scott McBride
2016, Open-File Report 2016-1190
Discharge from springs in Florida is sourced from aquifers, such as the Upper Floridan aquifer, which is overlain by an upper confining unit that locally can have properties of an aquifer. Water levels in aquifers are affected by several factors, such as precipitation, recharge, and groundwater withdrawals, which in turn...
Concentration, flux, and trend estimates with uncertainty for nutrients, chloride, and total suspended solids in tributaries of Lake Champlain, 1990–2014
Laura Medalie
2016, Open-File Report 2016-1200
The U.S. Geological Survey, in cooperation with the New England Interstate Water Pollution Control Commission and the Vermont Department of Environmental Conservation, estimated daily and 9-month concentrations and fluxes of total and dissolved phosphorus, total nitrogen, chloride, and total suspended solids from 1990 (or first available date) through 2014...
Groundwater-flow model of the northern High Plains aquifer in Colorado, Kansas, Nebraska, South Dakota, and Wyoming
Steven M. Peterson, Amanda T. Flynn, Jonathan P. Traylor
2016, Scientific Investigations Report 2016-5153
The High Plains aquifer is a nationally important water resource underlying about 175,000 square miles in parts of eight states: Colorado, Kansas, Oklahoma, Nebraska, New Mexico, South Dakota, Texas, and Wyoming. Droughts across much of the Northern High Plains from 2001 to 2007 have combined with recent (2004) legislative mandates...
Collection, processing, and quality assurance of time-series electromagnetic-induction log datasets, 1995–2016, south Florida
Scott T. Prinos, Robert Valderrama
2016, Open-File Report 2016-1194
Time-series electromagnetic-induction log (TSEMIL) datasets are collected from polyvinyl-chloride cased or uncased monitoring wells to evaluate changes in water conductivity over time. TSEMIL datasets consist of a series of individual electromagnetic-induction logs, generally collected at a frequency of once per month or once per year that have been compiled into...
Estimating natural monthly streamflows in California and the likelihood of anthropogenic modification
Daren M. Carlisle, David M. Wolock, Jeanette K. Howard, Theodore E. Grantham, Kurt Fesenmyer, Michael Wieczorek
2016, Open-File Report 2016-1189
Because natural patterns of streamflow are a fundamental property of the health of streams, there is a critical need to quantify the degree to which human activities have modified natural streamflows. A requirement for assessing streamflow modification in a given stream is a reliable estimate of flows expected in the...
Flow characteristics and salinity patterns of tidal rivers within the northern Ten Thousand Islands, southwest Florida, water years 2007–14
Amanda Booth, Lars E. Soderqvist
2016, Scientific Investigations Report 2016-5158
Freshwater flow to the Ten Thousand Islands estuary has been altered by the construction of the Tamiami Trail and the Southern Golden Gate Estates. The Picayune Strand Restoration Project, which is associated with the Comprehensive Everglades Restoration Plan, has been implemented to improve freshwater delivery to the Ten Thousand Islands...
Global stocks of selected mineral-based commodities
David R. Wilburn, Donald I. Bleiwas, Nick A. Karl
2016, Scientific Investigations Report 2016-5152
IntroductionThe U.S. Geological Survey, National Minerals Information Center, analyzes mineral and metal supply chains by identifying and describing major components of mineral and material flows from ore extraction, through intermediate forms, to a final product. This report focuses on an important component of the world’s supply chain: the amounts and...
Geologic map and cross sections of the Embudo Fault Zone in the Southern Taos Valley, Taos County, New Mexico
Paul W. Bauer, Keith I. Kelson, V. J. S. Grauch, Benjamin J. Drenth, Peggy S. Johnson, Scott B. Aby, Brigitte Felix
2016, Open-File Report 584
The southern Taos Valley encompasses the physiographic and geologic transition zone between the Picuris Mountains and the San Luis Basin of the Rio Grande rift. The Embudo fault zone is the rift transfer structure that has accommodated the kinematic disparities between the San Luis Basin and the Española Basin during...
The 2016 groundwater flow model for Dane County, Wisconsin
Michael J. Parsen, Kenneth R. Bradbury, Randall J. Hunt, Daniel T. Feinstein
2016, Bulletin 110
A new groundwater flow model for Dane County, Wisconsin, replaces an earlier model developed in the 1990s by the Wisconsin Geological and Natural History Survey (WGNHS) and the U.S. Geological Survey (USGS). This modeling study was conducted cooperatively by the WGNHS and the USGS with funding from the Capital Area...
Groundwater and surface-water interaction, water quality, and processes affecting loads of dissolved solids, selenium, and uranium in Fountain Creek, near Pueblo, Colorado, 2012–2014
L. Rick Arnold, Roderick F. Ortiz, Christopher R. Brown, Kenneth R. Watts
2016, Scientific Investigations Report 2016-5134
In 2012, the U.S. Geological Survey, in cooperation with the Arkansas River Basin Regional Resource Planning Group, initiated a study of groundwater and surface-water interaction, water quality, and loading of dissolved solids, selenium, and uranium to Fountain Creek near Pueblo, Colorado, to improve understanding of sources and processes affecting loading...
Hydropower assessment of Bolivia—A multisource satellite data and hydrologic modeling approach
Naga Manohar Velpuri, Shahriar Pervez, W. Matthew Cushing
2016, Open-File Report 2016-1156
This study produced a geospatial database for use in a decision support system by the Bolivian authorities to investigate further development and investment potentials in sustainable hydropower in Bolivia. The study assessed theoretical hydropower of all 1-kilometer (km) stream segments in the country using multisource satellite data and a hydrologic...
Hydrogeology and hydrologic conditions of the Ozark Plateaus aquifer system
Phillip D. Hays, Katherine J. Knierim, Brian K. Breaker, Drew A. Westerman, Brian R. Clark
2016, Scientific Investigations Report 2016-5137
The hydrogeology and hydrologic characteristics of the Ozark Plateaus aquifer system were characterized as part of ongoing U.S. Geological Survey efforts to assess groundwater availability across the Nation. The need for such a study in the Ozark Plateaus physiographic province (Ozark Plateaus) is highlighted by increasing demand on groundwater resources...
Spatial and temporal variation of stream chemistry associated with contrasting geology and land-use patterns in the Chesapeake Bay watershed—Summary of results from Smith Creek, Virginia; Upper Chester River, Maryland; Conewago Creek, Pennsylvania; and Difficult Run, Virginia, 2010–2013
Kenneth E. Hyer, Judith M. Denver, Michael J. Langland, James S. Webber, J. K. Böhlke, W. Dean Hively, John W. Clune
2016, Scientific Investigations Report 2016-5093
Despite widespread and ongoing implementation of conservation practices throughout the Chesapeake Bay watershed, water quality continues to be degraded by excess sediment and nutrient inputs. While the Chesapeake Bay Program has developed and maintains a large-scale and long-term monitoring network to detect improvements in water quality throughout the watershed, fewer...
GIS-based identification of areas that have resource potential for critical minerals in six selected groups of deposit types in Alaska
Susan M. Karl, James V. Jones III, Timothy S. Hayes, editor(s)
2016, Open-File Report 2016-1191
Alaska has considerable potential for undiscovered mineral resources. This report evaluates potential for undiscovered critical minerals in Alaska. Critical minerals are those for which the United States imports more than half of its total supply and which are largely derived from nations that cannot be considered reliable trading partners. In...
Quality of surface water in Missouri, water year 2015
Miya N. Barr, David C. Heimann
2016, Data Series 1023
The U.S. Geological Survey, in cooperation with the Missouri Department of Natural Resources, designed and operates a series of monitoring stations on streams and springs throughout Missouri known as the Ambient Water-Quality Monitoring Network. During water year 2015 (October 1, 2014, through September 30, 2015), data were collected at 74...
Estimated use of water in the Delaware River Basin in Delaware, New Jersey, New York, and Pennsylvania, 2010
Susan S. Hutson, Kristin S. Linsey, Russell A. Ludlow, Betzaida Reyes, Jennifer L. Shourds
2016, Scientific Investigations Report 2015-5142
The Delaware River Basin (DRB) was selected as a Focus Area Study in 2011 by the U.S. Geological Survey (USGS) as part of the USGS National Water Census. The National Water Census is a USGS research program that focuses on national water availability and use and then develops new water...
