Preliminary Geologic Map of Mount Pagan Volcano, Pagan Island, Commonwealth of the Northern Mariana Islands
Frank A. Trusdell, Richard B. Moore, Maurice K. Sako
2006, Open-File Report 2006-1386
Pagan Island is the subaerial portion of two adjoining Quaternary stratovolcanoes near the middle of the active Mariana Arc, [FAT1]north of Saipan. Pagan and the other volcanic islands that constitute part of the Arc form the northern half of the East Mariana Ridge[FAT2], which extends about 2-4 km above the...
Fecal-indicator bacteria in the Allegheny, Monongahela, and Ohio Rivers and selected tributaries, Allegheny County, Pennsylvania, 2001-2005
Theodore F. Buckwalter, Tammy M. Zimmerman, John W. Fulton
2006, Scientific Investigations Report 2006-5216
Concentrations of fecal-indicator bacteria were determined in 1,027 water-quality samples collected from July 2001 through August 2005 during dry- (72-hour dry antecedent period) and wet-weather (48-hour dry antecedent period and at least 0.3 inch of rain in a 24-hour period) conditions in the Allegheny, Monongahela, and Ohio Rivers (locally referred...
Statewide analysis of the drainage-area ratio method for 34 streamflow percentile ranges in Texas
William H. Asquith, Meghan C. Roussel, Joseph Vrabel
2006, Scientific Investigations Report 2006-5286
The drainage-area ratio method commonly is used to estimate streamflow for sites where no streamflow data are available using data from one or more nearby streamflow-gaging stations. The method is intuitive and straightforward to implement and is in widespread use by analysts and managers of surface-water resources. The method equates...
A Streamflow Statistics (StreamStats) Web Application for Ohio
G. F. Koltun, Stephanie P. Kula, Barry M. Puskas
2006, Scientific Investigations Report 2006-5312
A StreamStats Web application was developed for Ohio that implements equations for estimating a variety of streamflow statistics including the 2-, 5-, 10-, 25-, 50-, 100-, and 500-year peak streamflows, mean annual streamflow, mean monthly streamflows, harmonic mean streamflow, and 25th-, 50th-, and 75th-percentile streamflows. StreamStats is a Web-based geographic...
Ground-water quality beneath irrigated cropland of the northern and southern High Plains aquifer, Nebraska and Texas, 2003-04
Jennifer S. Stanton, Lynne S. Fahlquist
2006, Scientific Investigations Report 2006-5196
A study of the quality of ground water beneath irrigated cropland was completed for the northern and southern High Plains aquifer. Ground-water samples were collected from 30 water-table monitoring wells in the northern agricultural land-use (NAL) study area in Nebraska in 2004 and 29 water-table monitoring wells in the southern agricultural...
Show me the numbers: What data currently exist for non-native species in the USA?
Alycia W. Crall, Laura A. Meyerson, Thomas J. Stohlgren, Catherine S. Jarnevich, Gregory J. Newman, James Graham
2006, Frontiers in Ecology and the Environment (4) 414-418
Non-native species continue to be introduced to the United States from other countries via trade and transportation, creating a growing need for early detection and rapid response to new invaders. It is therefore increasingly important to synthesize existing data on non-native species abundance and distributions. However, no comprehensive analysis of...
Forecasting runout of rock and debris avalanches
Richard M. Iverson
S.G. Evans, G.S. Mugnozza, A. Strom, R.L. Hermanns, editor(s)
2006, Conference Paper, Landslides from Massive Rock Slope Failure. NATO Science Series, vol 49
Physically based mathematical models and statistically based empirical equations each may provide useful means of forecasting runout of rock and debris avalanches. This paper compares the foundations, strengths, and limitations of a physically based model and a statistically based forecasting method, both of which were developed to predict runout across...
Geophysical Studies Based on Gravity and Seismic Data of Tule Desert, Meadow Valley Wash, and California Wash Basins, Southern Nevada
Daniel S. Scheirer, William R. Page, John J. Miller
2006, Open-File Report 2006-1396
Gravity and seismic data from Tule Desert, Meadow Valley Wash, and California Wash, Nevada, provide insight into the subsurface geometry of these three basins that lie adjacent to rapidly developing areas of Clark County, Nevada. Each of the basins is the product of Tertiary extension accommodated with the general form...
Occurrence and transport of agricultural chemicals in Leary Weber Ditch Basin, Hancock County, Indiana, 2003-04
Nancy T. Baker, Wesley W. Stone, John T. Wilson, Michael T. Meyer
2006, Scientific Investigations Report 2006-5251
Leary Weber Ditch Basin, Hancock County, Indiana, is one of seven first-order basins selected from across the United States as part of the Agricultural Chemicals: Source, Transport, and Fate study conducted by the National Water-Quality Assessment Program of the U.S. Geological Survey. The nationwide study was designed to increase the...
Total dissolved gas and water temperature in the lower Columbia River, Oregon and Washington, 2006: Quality-assurance data and comparison to water-quality standards
Dwight Q. Tanner, Heather M. Bragg, Matthew W. Johnston
2006, Data Series 235
Significant Findings When water is released through the spillways of dams, air is entrained in the water, increasing the downstream concentration of dissolved gases. Excess dissolved-gas concentrations can have ad-verse effects on freshwater aquatic life. The U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers,...
Monitoring Inland Storm Surge and Flooding from Hurricane Rita
Benton D. McGee, Roland W. Tollett, Mason Jr.
2006, Fact Sheet 2006-3136
Pressure transducers (sensors) and high-water marks were used to document the inland water levels related to storm surge generated by Hurricane Rita in southwestern Louisiana and southeastern Texas. On September 22-23, 2005, an experimental monitoring network of sensors was deployed at 33 sites over an area of about 4,000 square...
Simulated Effects of Seasonal Ground-Water Pumpage for Irrigation on Hydrologic Conditions in the Lower Apalachicola-Chattahoochee-Flint River Basin, Southwestern Georgia and Parts of Alabama and Florida, 1999-2002
L. Elliott Jones, Lynn J. Torak
2006, Scientific Investigations Report 2006-5234
To determine the effects of seasonal ground-water pumpage for irrigation, a finite-element ground-water flow model was developed for the Upper Floridan aquifer in the lower Flint River Basin area, including adjacent parts of the Chattahoochee and Apalachicola River Basins. The model simulates withdrawal from the aquifer at 3,280 irrigation, municipal,...
Preliminary Bedrock Geologic Map of the Old Lyme Quadrangle, New London and Middlesex Counties, Connecticut
Gregory J. Walsh, Robert B. Scott, John N. Aleinikoff, Thomas R. Armstrong
2006, Open-File Report 2006-1296
This report presents a preliminary map of the bedrock geology of the Old Lyme quadrangle, New London and Middlesex Counties, Connecticut. The map depicts contacts of bedrock geologic units, faults, outcrops, and structural geologic information. The map was published as part of a study of fractured bedrock aquifers and regional...
Geology and mineral deposits of the Snow Camp-Saxapahaw area, central North Carolina
Robert G. Schmidt, Pablo Gumiel, Alba Payas
2006, Open-File Report 2006-1259
The Snow Camp-Saxapahaw study area, in the Carolina slate belt in the Southeastern United States, is notable for large zones of high-sulfidation alteration in arc-related metavolcanic rocks. The area has potential for additional significant pyrophyllite and related aluminosilicate refractory mineral deposits and may have potential for small- to medium-size gold...
Arsenic, Boron, and Fluoride Concentrations in Ground Water in and Near Diabase Intrusions, Newark Basin, Southeastern Pennsylvania
Lisa A. Senior, Ronald A. Sloto
2006, Scientific Investigations Report 2006-5261
During an investigation in 2000 by the U.S. Environmental Protection Agency (USEPA) of possible contaminant releases from an industrial facility on Congo Road near Gilbertsville in Berks and Montgomery Counties, southeastern Pennsylvania, concentrations of arsenic and fluoride above USEPA drinking-water standards of 10 ?g/L and 4 mg/L, respectively, and of...
Kendall-Theil Robust Line (KTRLine--version 1.0)-A Visual Basic Program for Calculating and Graphing Robust Nonparametric Estimates of Linear-Regression Coefficients Between Two Continuous Variables
Gregory E. Granato
2006, Techniques and Methods 4-A7
The Kendall-Theil Robust Line software (KTRLine-version 1.0) is a Visual Basic program that may be used with the Microsoft Windows operating system to calculate parameters for robust, nonparametric estimates of linear-regression coefficients between two continuous variables. The KTRLine software was developed by the U.S. Geological Survey, in cooperation with the...
Determination of the δ15N and δ13C of total nitrogen and carbon in solids; RSIL lab code 1832
Kinga Revesz, Haiping Qi, Tyler B. Coplan
2006, Techniques and Methods 10-C5
The purpose of the Reston Stable Isotope Laboratory (RSIL) lab code 1832 is to determine the δ(15N/14N), abbreviated as δ15N, and the δ(13C/12C), abbreviated as δ13C, of total nitrogen and carbon in a solid sample. A Carlo Erba NC 2500 elemental analyzer (EA) is used to...
Descriptions and preliminary report on sediment cores from the southwest coastal area, Part II: Collected July 2005, Everglades National Park, Florida
G. Lynn Wingard, Carlos A. Budet, Ruth E. Ortiz, Joel Hudley, James B. Murray
2006, Open-File Report 2006-1271
Twelve cores were collected from six sites in the southwest coastal area of Everglades National Park, Florida, in July 2005. These six sites create transects up three river systems that are part of the complex network of channels and bays that form the mangrove and coastal glades – Lostmans River...
User's manual for Program PeakFQ, annual flood-frequency analysis using Bulletin 17B guidelines
Kathleen M. Flynn, William H. Kirby, Paul R. Hummel
2006, Techniques and Methods 4-B4
Estimates of flood flows having given recurrence intervals or probabilities of exceedance are needed for design of hydraulic structures and floodplain management. Program PeakFQ provides estimates of instantaneous annual-maximum peak flows having recurrence intervals of 2, 5, 10, 25, 50, 100, 200, and 500 years (annual-exceedance probabilities of 0.50, 0.20,...
Estimating magnitude and frequency of floods using the PeakFQ program
Kathleen M. Flynn, William H. Kirby, Robert Mason, Timothy A. Cohn
2006, Fact Sheet 2006-3143
Use of Spatial Sampling and Microbial Source-Tracking Tools for Understanding Fecal Contamination at Two Lake Erie Beaches
Donna S. Francy, Erin E. Bertke, Dennis P. Finnegan, Christopher M. Kephart, Rodney A. Sheets, John Rhoades, Lester Stumpe
2006, Scientific Investigations Report 2006-5298
Source-tracking tools were used to identify potential sources of fecal contamination at two Lake Erie bathing beaches: an urban beach (Edgewater in Cleveland, Ohio) and a beach in a small city (Lakeshore in Ashtabula, Ohio). These tools included identifying spatial patterns of Escherichia coli (E. coli) concentrations in each area,...
Environmental Setting of the Morgan Creek Basin, Maryland, 2002-04
Tracy Connell Hancock, Michael J. Brayton
2006, Open-File Report 2006-1151
The Morgan Creek Basin is a 31-square-kilometer watershed in Kent County, Maryland on the Delmarva Peninsula. The Delmarva Peninsula covers about 15,500 square kilometers and includes most of the State of Delaware and parts of Maryland and Virginia east of the Chesapeake Bay. The Morgan Creek Basin is one of...
Monitoring for methane gas in Carbon and Emery Counties, Utah, 1995-2003
Andrew L. Burr, Bernard J. Stolp, Kevin K. Johnson, Gilbert L. Hunt
2006, Fact Sheet 2006-3113
The release of methane gas from coal beds creates the potential for it to move into near-surface environments through natural and human-made pathways. To help ensure the safety of communities and determine the potential effects of development of coal-bed resources, methane gas concentrations in soils and ground water in Carbon...
Ground-Water Contributions to Reservoir Storage and the Effect on Estimates of Firm Yield for Reservoirs in Massachusetts
Stacey A. Archfield, Carl S. Carlson
2006, Scientific Investigations Report 2006-5045
Potential ground-water contributions to reservoir storage were determined for nine reservoirs in Massachusetts that had shorelines in contact with sand and gravel aquifers. The effect of ground water on firm yield was not only substantial, but furthermore, the firm yield of a reservoir in contact with a sand and gravel...
Hydrogeomorphic Classification of Wetlands on Mt. Desert Island, Maine, Including Hydrologic Susceptibility Factors for Wetlands in Acadia National Park
Martha G. Nielsen
2006, Scientific Investigations Report 2006-5162
The U.S. Geological Survey, in cooperation with the National Park Service, developed a hydrogeomorphic (HGM) classification system for wetlands greater than 0.4 hectares (ha) on Mt. Desert Island, Maine, and applied this classification using map-scale data to more than 1,200 mapped wetland units on the island. In addition, two hydrologic...
