Trace-metal and organic constituent concentrations in bed sediment at Big Base and Little Base Lakes, Little Rock Air Force Base, Arkansas—Comparisons to sediment-quality guidelines and indications for timing of exposure
B. G. Justus, Phillip D. Hays, Rheannon M. Hart
2015, Scientific Investigations Report 2015-5112
This report compares concentrations for a wide range of inorganic and organic constituents in bed sediment from Big Base Lake and Little Base Lake, which are located on Little Rock Air Force Base, Arkansas, to sediment-quality guidelines. This report also compares trace-metal concentrations in a bed-sediment core sample to sediment...
Hydrogeology and simulation of groundwater flow in fractured-rock aquifers of the Piedmont and Blue Ridge Physiographic Provinces, Bedford County, Virginia
Kurt J. McCoy, Bradley A. White, Richard M. Yager, George E. Harlow Jr.
2015, Scientific Investigations Report 2015-5113
An annual groundwater budget was computed as part of a hydrogeologic characterization and monitoring effort of fractured-rock aquifers in Bedford County, Virginia, a growing 764-square-mile (mi2) rural area between the cities of Roanoke and Lynchburg, Virginia. Data collection in Bedford County began in the 1930s when continuous stream gages were...
A conceptual framework and monitoring strategy for movement of saltwater in the coastal plain aquifer system of Virginia
E. Randolph Mcfarland
2015, Scientific Investigations Report 2015-5117
A conceptual framework synthesizes previous studies to provide an understanding of conditions, processes, and relations of saltwater to groundwater withdrawal in the Virginia Coastal Plain aquifer system. A strategy for monitoring saltwater movement is based on spatial relations between the saltwater-transition zone and 612 groundwater-production wells that were regulated during...
Flood-inundation Maps for the Deerfield River, Franklin County, Massachusetts, from the Confluence with the Cold River Tributary to the Connecticut River
Pamela J. Lombard, Gardner C. Bent
2015, Scientific Investigations Report 2015-5104
The U.S. Geological Survey developed flood elevations in cooperation with the Federal Emergency Management Agency for a 30-mile reach of the Deerfield River from the confluence of the Cold River tributary to the Connecticut River in the towns of Charlemont, Buckland, Shelburne, Conway, Deerfield, and Greenfield in Franklin County, Massachusetts...
Relations between well-field pumping and induced canal leakage in east-central Miami-Dade County, Florida, 2010-2011
Katherine Nemec, Dominick J. Antolino, Michael Turtora, Adam Foster
2015, Scientific Investigations Report 2015-5095
An extensive canal and water management system exists in south Florida to prevent flooding, replenish groundwater, and impede saltwater intrusion. The unconfined Biscayne aquifer, which underlies southeast Florida and provides water for millions of residents, interacts with the canal system. The Biscayne aquifer is composed of a highly transmissive karst...
Flood-inundation maps for Grand River, Red Cedar River, and Sycamore Creek near Lansing, Michigan
Matthew Whitehead, Chad J. Ostheimer
2015, Scientific Investigations Report 2015-5101
Digital flood-inundation maps for a total of 19.7 miles of the Grand River, the Red Cedar River, and Sycamore Creek were created by the U.S. Geological Survey (USGS) in cooperation with the City of Lansing, Michigan, and the U.S. Army Corps of Engineers. The flood-inundation maps, which can be accessed...
Flood-inundation maps for the Scioto River at La Rue, Ohio
Matthew Whitehead
2015, Scientific Investigations Report 2015-5100
Digital flood-inundation maps for a 3-mile (mi) reach of the Scioto River that extends about 1/2 mi upstream and 1/2 mi downstream of the corporate boundary for La Rue, Ohio, were created by the U.S. Geological Survey (USGS) in cooperation with the Village of La Rue, Marion County Commissioners, Montgomery...
Flood-inundation maps for the St. Marys River at Decatur, Indiana
Kellan R. Strauch
2015, Scientific Investigations Report 2015-5099
Digital flood-inundation maps for an 8.9-mile reach of the St. Marys River at Decatur, Indiana, were developed by the U.S. Geological Survey (USGS), in cooperation with the Indiana Office of Community and Rural Affairs. The inundation maps, which can be accessed through the USGS Flood Inundation Mapping Science Web site...
Evaluation of statistical and rainfall-runoff models for predicting historical daily streamflow time series in the Des Moines and Iowa River watersheds
William H. Farmer, Rodney R. Knight, David A. Eash, Kasey J. Hutchinson, S. Mike Linhart, Daniel E. Christiansen, Stacey A. Archfield, Thomas M. Over, Julie E. Kiang
2015, Scientific Investigations Report 2015-5089
Daily records of streamflow are essential to understanding hydrologic systems and managing the interactions between human and natural systems. Many watersheds and locations lack streamgages to provide accurate and reliable records of daily streamflow. In such ungaged watersheds, statistical tools and rainfall-runoff models are used to estimate daily streamflow. Previous...
Flood-inundation maps for White River at Petersburg, Indiana
Kathleen K. Fowler
2015, Scientific Investigations Report 2015-5107
Digital flood-inundation maps for a 7.7-mile reach of the White River at Petersburg, Indiana, were created by the U.S. Geological Survey (USGS), in cooperation with the Indiana Office of Community and Rural Affairs. The inundation maps, which can be accessed through the USGS Flood Inundation Mapping Science Web site at...
Water-budgets and recharge-area simulations for the Spring Creek and Nittany Creek Basins and parts of the Spruce Creek Basin, Centre and Huntingdon Counties, Pennsylvania, Water Years 2000–06
John W. Fulton, Dennis W. Risser, R. Steve Regan, John F. Walker, Randall J. Hunt, Richard G. Niswonger, Scott A. Hoffman, Steven L. Markstrom
2015, Scientific Investigations Report 2015-5073
This report describes the results of a study by the U.S. Geological Survey in cooperation with ClearWater Conservancy and the Pennsylvania Department of Environmental Protection to develop a hydrologic model to simulate a water budget and identify areas of greater than average recharge for the Spring Creek Basin in central...
2013 volcanic activity in Alaska: summary of events and response of the Alaska Volcano Observatory
James P. Dixon, Cheryl Cameron, Robert G. McGimsey, Christina A. Neal, Chris Waythomas
2015, Scientific Investigations Report 2015-5110
The Alaska Volcano Observatory (AVO) responded to eruptions, volcanic unrest or suspected unrest, and seismic events at 18 volcanic centers in Alaska during 2013. Beginning with the 2013 AVO Summary of Events, the annual description of the AVO seismograph network and activity, once a stand-alone publication, is now part of...
Numerical simulation of groundwater flow, resource optimization, and potential effects of prolonged drought for the Citizen Potawatomi Nation Tribal Jurisdictional Area, central Oklahoma
Derek W. Ryter, Christopher D. Kunkel, Steven M. Peterson, Jonathan P. Traylor
2015, Scientific Investigations Report 2014-5167
A hydrogeological study including two numerical groundwater-flow models was completed for the Citizen Potawatomi Nation Tribal Jurisdictional Area of central Oklahoma. One numerical groundwater-flow model, the Citizen Potawatomi Nation model, encompassed the jurisdictional area and was based on the results of a regional-scale hydrogeological study and numerical groundwater flow model...
Hydrologic budget and conditions of Permian, Pennsylvanian, and Mississippian aquifers in the Appalachian Plateaus physiographic province
Kurt J. McCoy, Richard M. Yager, David L. Nelms, David E. Ladd, Jack Monti, Jr., Mark D. Kozar
2015, Scientific Investigations Report 2015-5106
In response to challenges to groundwater availability posed by historic land-use practices, expanding development of hydrocarbon resources, and drought, the U.S. Geological Survey Groundwater Resources Program began a regional assessment of the Appalachian Plateaus aquifers in 2013 that incorporated a hydrologic landscape approach to estimate all components of the hydrologic...
Simulation of groundwater flow and analysis of the effects of water-management options in the North Platte Natural Resources District, Nebraska
Steven M. Peterson, Amanda T. Flynn, Joseph Vrabel, Derek W. Ryter
2015, Scientific Investigations Report 2015-5093
The North Platte Natural Resources District (NPNRD) has been actively collecting data and studying groundwater resources because of concerns about the future availability of the highly inter-connected surface-water and groundwater resources. This report, prepared by the U.S. Geological Survey in cooperation with the North Platte Natural Resources District, describes a...
Streamflow gains and losses in the Colorado River in northwestern Burnet and southeastern San Saba Counties, Texas
Christopher L. Braun, Scott D. Grzyb
2015, Scientific Investigations Report 2015-5098
In October 2012, the U.S. Geological Survey (USGS), in cooperation with the Central Texas Groundwater Conservation District, began an assessment to better understand if and where groundwater from the Ellenburger-San Saba aquifer is discharging to the Colorado River, and if and where Colorado River streamflow is recharging the Ellenburger-San Saba...
Median nitrate concentrations in groundwater in the New Jersey Highlands Region estimated using regression models and land-surface characteristics
Ronald J. Baker, Mary M. Chepiga, Stephen J. Cauller
2015, Scientific Investigations Report 2015-5075
Nitrate-concentration data are used in conjunction with land-use and land-cover data to estimate median nitrate concentrations in groundwater underlying the New Jersey (NJ) Highlands Region. Sources of data on nitrate in 19,670 groundwater samples are from the U.S. Geological Survey (USGS) National Water Information System (NWIS) and the NJ Private...
Regional regression equations to estimate peak-flow frequency at sites in North Dakota using data through 2009
Tara Williams-Sether
2015, Scientific Investigations Report 2015-5096
Annual peak-flow frequency data from 231 U.S. Geological Survey streamflow-gaging stations in North Dakota and parts of Montana, South Dakota, and Minnesota, with 10 or more years of unregulated peak-flow record, were used to develop regional regression equations for exceedance probabilities of 0.5, 0.20, 0.10, 0.04, 0.02, 0.01, and 0.002...
A water-budget approach to estimating potential groundwater recharge from two domestic sewage disposal fields in eastern Bernalillo County, New Mexico, 2011-12
Dianna M. Crilley, Jake W. Collison
2015, Scientific Investigations Report 2015-5060
Eastern Bernalillo County, New Mexico, is a historically rural area that in recent years has experienced an increase in population and in the construction of new housing units, most of which are not connected to a centralized wastewater treatment system. Increasing water use has raised concerns about the effect of...
Eelgrass habitat near Liberty Bay: Chapter 5
Richard S. Dinicola
Renee K. Takesue, editor(s)
2015, Scientific Investigations Report 2015-5125
Seagrasses are a widespread type of marine flowering plants that grow in nearshore intertidal and subtidal zones. Seagrass beds are ecologically important because they affect physical, biological, and chemical characteristics of nearshore habitat, and they are sensitive to changes in coastal water quality (Stevenson and others, 1993; Koch, 2001; Martinez-Crego...
Towards automating measurements and predictions of Escherichia coli concentrations in the Cuyahoga River, Cuyahoga Valley National Park, Ohio, 2012–14
Amie M.G. Brady, Meg B. Plona
2015, Scientific Investigations Report 2015-5094
Nowcasts are systems that can provide estimates of the current bacterial water-quality conditions based on predictive models using easily-measured, explanatory variables; nowcasts can provide the public with the information to make informed decisions on the risk associated with recreational activities in natural water bodies. Previous studies on the Cuyahoga River...
Hydrogeology of the Susquehanna River valley-fill aquifer system in the Endicott-Vestal area of southwestern Broome County, New York
Allan D. Randall, William M. Kappel
2015, Scientific Investigations Report 2015-5078
The village of Endicott, New York, and the adjacent town of Vestal have historically used groundwater from the Susquehanna River valley-fill aquifer system for municipal water supply, but parts of some aquifers in this urban area suffer from legacy contamination from varied sources. Endicott would like to identify sites distant...
Water-quality conditions and suspended-sediment transport in the Wilson and Trask Rivers, northwestern Oregon, water years 2012–14
Steven Sobieszczyk, Heather M. Bragg, Mark A. Uhrich
2015, Scientific Investigations Report 2015-5109
In October 2011, the U.S. Geological Survey began investigating and monitoring water-quality conditions and suspended-sediment transport in the Wilson and Trask Rivers, northwestern Oregon. Water temperature, specific conductance, turbidity, and dissolved oxygen were measured every 15–30 minutes in both streams using real-time instream water-quality monitors. In conjunction with the...
Updated numerical model with uncertainty assessment of 1950-56 drought conditions on brackish-water movement within the Edwards aquifer, San Antonio, Texas
Linzy K. Brakefield, Jeremy T. White, Natalie A. Houston, Jonathan V. Thomas
2015, Scientific Investigations Report 2015-5081
In 2010, the U.S. Geological Survey, in cooperation with the San Antonio Water System, began a study to assess the brackish-water movement within the Edwards aquifer (more specifically the potential for brackish-water encroachment into wells near the interface between the freshwater and brackish-water transition zones, referred to in this report...
Geologic field-trip guide to Lassen Volcanic National Park and vicinity, California
L.J. Patrick Muffler, Michael A. Clynne
2015, Scientific Investigations Report 2015-5067
This geologic field-trip guide provides an overview of Quaternary volcanism in and around Lassen Volcanic National Park in northern California. The guide begins with a comprehensive overview of the geologic framework and the stratigraphic terminology of the Lassen region, based primarily on the “Geologic map of Lassen Volcanic National Park...
