Storage capacity and sedimentation trends of Lago Garzas, Puerto Rico, 1996-2007
L.R. Soler-Lopez
2012, Scientific Investigations Map 3218
Lago Garzas is located in west-central Puerto Rico, about 3.5 kilometers southwest of the town of Adjuntas, in the confluence of the Río Vacas and three other unnamed tributaries (fig. 1). The dam is owned and operated by the Puerto Rico Electric Power Authority (PREPA), and was constructed in 1943...
Method for estimating potential wetland extent by utilizing streamflow statistics and flood-inundation mapping techniques: Pilot study for land along the Wabash River near Terre Haute, Indiana
Moon H. Kim, Christian T. Ritz, Donald V. Arvin
2012, Scientific Investigations Report 2012-5175
Potential wetland extents were estimated for a 14-mile reach of the Wabash River near Terre Haute, Indiana. This pilot study was completed by the U.S. Geological Survey in cooperation with the U.S. Department of Agriculture, Natural Resources Conservation Service (NRCS). The study showed that potential wetland extents can be estimated...
Test drilling and data collection in the Calaveras County portion of the Eastern San Joaquin Groundwater Subbasin, California, December 2009-June 2011
Loren F. Metzger, John A. Izbicki, Joseph M. Nawikas
2012, Open-File Report 2012-1049
Two multiple-well monitoring sites were drilled in the Calaveras County portion of the Eastern San Joaquin Groundwater Subbasin, about 100 miles east of San Francisco, California, during December 2009 and January 2010. Site 3N/9E-12G1-4 was drilled to a depth of 503 feet below land surface (bls), and four wells were...
Geophysical investigation of sentinel lakes in Lake, Seminole, Orange, and Volusia Counties, Florida
Christopher Reich, James Flocks, Jeffrey Davis
2012, Open-File Report 2012-1201
This study was initiated in cooperation with the St. Johns River Water Management District (SJRWMD) to investigate groundwater and surface-water interaction in designated sentinel lakes in central Florida. Sentinel lakes are a SJRWMD established set of priority water bodies (lakes) for which minimum flows and levels (MFLs) are determined. Understanding...
Database of the United States Coal Pellet Collection of the U.S. Geological Survey Organic Petrology Laboratory
Nikolaus J. Deems, Paul C. Hackley
2012, Open-File Report 2012-1151
The Organic Petrology Laboratory (OPL) of the U.S. Geological Survey (USGS) Eastern Energy Resources Science Center in Reston, Virginia, contains several thousand processed coal sample materials that were loosely organized in laboratory drawers for the past several decades. The majority of these were prepared as 1-inch-diameter particulate coal pellets (more...
Structures data collection for the national map using volunteered geographic information
Barbara S. Poore, Eric B. Wolf, Erin M. Korris, Jennifer L. Walter, Greg D. Matthews
2012, Open-File Report 2012-1209
The U.S. Geological Survey (USGS) has historically sponsored volunteered data collection projects to enhance its topographic paper and digital map products. This report describes one phase of an ongoing project to encourage volunteers to contribute data to The National Map using online editing tools. The USGS recruited students studying geographic...
Modeling habitat dynamics accounting for possible misclassification
Sophie Veran, Kevin J. Kleiner, Remi Choquet, Jaime Collazo, James D. Nichols
2012, Landscape Ecology (27) 943-956
Land cover data are widely used in ecology as land cover change is a major component of changes affecting ecological systems. Landscape change estimates are characterized by classification errors. Researchers have used error matrices to adjust estimates of areal extent, but estimation of land cover change is more difficult and...
Estimation of baseline daily mean streamflows for ungaged locations on Pennsylvania streams, water years 1960-2008
Marla H. Stuckey, Edward H. Koerkle, James E. Ulrich
2012, Scientific Investigations Report 2012-5142
Water-resource managers use daily mean streamflows to generate streamflow statistics and analyze streamflow conditions. An in-depth evaluation of flow regimes to promote instream ecological health often requires streamflow information obtainable only from a time series hydrograph. Historically, it has been difficult to estimate daily mean streamflow for an ungaged location....
Data visualization, time-series analysis, and mass-balance modeling of hydrologic and water-quality data for the McTier Creek watershed, South Carolina, 2007-2009
Stephen T. Benedict, Paul Conrads, Toby D. Feaster, Celeste A. Journey, Heather E. Golden, Christopher D. Knightes, Gary M. Davis, Paul M. Bradley
2012, Open-File Report 2011-1209
The McTier Creek watershed is located in the headwaters of the Edisto River Basin, which is in the Coastal Plain region of South Carolina. The Edisto ecosystem has some of the highest recorded fish-tissue mercury concentrations in the United States. In an effort to advance the understanding of the fate...
Neighborhood and habitat effects on vital rates: expansion of the Barred Owl in the Oregon Coast Ranges
Charles B. Yackulic, Janice Reid, Raymond Davis, James E. Hines, James D. Nichols, Eric Forsman
2012, Ecology (93) 1953-1966
In this paper, we modify dynamic occupancy models developed for detection-nondetection data to allow for the dependence of local vital rates on neighborhood occupancy, where neighborhood is defined very flexibly. Such dependence of occupancy dynamics on the status of a relevant neighborhood is pervasive, yet frequently ignored. Our framework permits...
Sampling and analysis plan for the characterization of groundwater quality in two monitoring wells near Pavillion, Wyoming
Peter R. Wright, Peter B. McMahon
2012, Open-File Report 2012-1197
In June 2010, the U.S. Environmental Protection Agency installed two deep monitoring wells (MW01 and MW02) near Pavillion, Wyoming to study groundwater quality. The U.S Geological Survey, in cooperation with the Wyoming Department of Environmental Quality, designed a plan to collect groundwater data from these monitoring wells. This sampling and...
The National Nonindigenous Aquatic Species Database
Matthew E. Neilson, Pamela L. Fuller
2012, Fact Sheet 2012-3100
The U.S. Geological Survey (USGS) Nonindigenous Aquatic Species (NAS) Program maintains a database that monitors, records, and analyzes sightings of nonindigenous aquatic plant and animal species throughout the United States. The program is based at the USGS Wetland and Aquatic Research Center in Gainesville, Florida.The initiative to maintain scientific information...
Spatial and seasonal variability of base flow in the Verde Valley, central Arizona, 2007 and 2011
Bradley D. Garner, Donald J. Bills
2012, Scientific Investigations Report 2012-5192
Synoptic base-flow surveys were conducted on streams in the Verde Valley, central Arizona, in June 2007 and February 2011 by the U.S. Geological Survey (USGS), in cooperation with the Verde River Basin Partnership, the Town of Clarkdale, and Yavapai County. These surveys, also known as seepage runs, measured streamflow under...
Groundwater-quality and quality-control data for two monitoring wells near Pavillion, Wyoming, April and May 2012
Peter R. Wright, Peter B. McMahon, David K. Mueller, Melanie L. Clark
2012, Data Series 718
In June 2010, the U.S. Environmental Protection Agency installed two deep monitoring wells (MW01 and MW02) near Pavillion, Wyoming, to study groundwater quality. During April and May 2012, the U.S Geological Survey, in cooperation with the Wyoming Department of Environmental Quality, collected groundwater-quality data and quality-control data from monitoring well...
An Automated Cropland Classification Algorithm (ACCA) for Tajikistan by combining Landsat, MODIS, and secondary data
Prasad S. Thenkabail, Zhuoting Wu
2012, Remote Sensing (4) 2890-2918
The overarching goal of this research was to develop and demonstrate an automated Cropland Classification Algorithm (ACCA) that will rapidly, routinely, and accurately classify agricultural cropland extent, areas, and characteristics (e.g., irrigated vs. rainfed) over large areas such as a country or a region through combination of multi-sensor remote sensing and...
Approaches in highly parameterized inversion-PESTCommander, a graphical user interface for file and run management across networks
Marinko Karanovic, Christopher T. Muffels, Matthew J. Tonkin, Randall J. Hunt
2012, Techniques and Methods 7-C8
Models of environmental systems have become increasingly complex, incorporating increasingly large numbers of parameters in an effort to represent physical processes on a scale approaching that at which they occur in nature. Consequently, the inverse problem of parameter estimation (specifically, model calibration) and subsequent uncertainty analysis have become increasingly computation-intensive...
Subsurface gas hydrates in the northern Gulf of Mexico
Ray Boswell, Timothy S. Collett, Matthew Frye, William Shedd, Daniel R. McConnell, Dianna Shelander
2012, Marine and Petroleum Geology (34) 4-30
The northernGulf of Mexico (GoM) has long been a focus area for the study of gashydrates. Throughout the 1980s and 1990s, work focused on massive gashydrates deposits that were found to form at and near the seafloor in association with hydrocarbon seeps. However, as global scientific and industrial interest in...
Methods of practice and guidelines for using survey-grade global navigation satellite systems (GNSS) to establish vertical datum in the United States Geological Survey
Paul H. Rydlund Jr., Brenda K. Densmore
2012, Techniques and Methods 11-D1
Geodetic surveys have evolved through the years to the use of survey-grade (centimeter level) global positioning to perpetuate and post-process vertical datum. The U.S. Geological Survey (USGS) uses Global Navigation Satellite Systems (GNSS) technology to monitor natural hazards, ensure geospatial control for climate and land use change, and gather data...
Nearshore morphology, benthic structure, hydrodynamics, and coastal groundwater discharge near Kahekili Beach Park, Maui, Hawaii
Peter W. Swarzenski, Curt D. Storlazzi, M. Katherine Presto, Ann E. Gibbs, Christopher G. Smith, Natasha T. Dimova, Meghan L. Dailer, Joshua B. Logan
2012, Open-File Report 2012-1166
This report presents a brief summary of recent fieldwork conducted off Kahekili Beach Park, Maui, Hawaii, the site of the newly established U.S. Coral Reef Task Force priority study area at Kaanapali and the Hawaii Department of Land and Natural Resources, Division of Aquatic Resources, Kahekili Herbivore Fisheries Management Area...
Quantification of aquifer properties with surface nuclear magnetic resonance in the Platte River valley, central Nebraska, using a novel inversion method
Trevor P. Irons, Christopher M. Hobza, Gregory V. Steele, Jared D. Abraham, James C. Cannia, Duane D. Woodward
2012, Scientific Investigations Report 2012-5189
Surface nuclear magnetic resonance, a noninvasive geophysical method, measures a signal directly related to the amount of water in the subsurface. This allows for low-cost quantitative estimates of hydraulic parameters. In practice, however, additional factors influence the signal, complicating interpretation. The U.S. Geological Survey, in cooperation with the Central Platte...
Local-area-enhanced, 2.5-meter resolution natural-color and color-infrared satellite-image mosaics of the Haji-Gak mineral district in Afghanistan: Chapter C in Local-area-enhanced, high-resolution natural-color and color-infrared satellite-image mosaics of mineral districts in Afghanistan
Philip A. Davis, Laura E. Cagney, Scott A. Arko, Michelle L. Harbin
2012, Data Series 709-C
The U.S. Geological Survey (USGS), in cooperation with the U.S. Department of Defense Task Force for Business and Stability Operations, prepared databases for mineral-resource target areas in Afghanistan. The purpose of the databases is to (1) provide useful data to ground-survey crews for use in performing detailed assessments of the...
Storm-induced inner-continental shelf circulation and sediment transport: Long Bay, South Carolina
John C. Warner, Brandy N. Armstrong, Charlene S. Sylvester, George Voulgaris, Tim Nelson, William C. Schwab, Jane F. Denny
2012, Continental Shelf Research (42) 51-63
Long Bay is a sediment-starved, arcuate embayment located along the US East Coast connecting both South and North Carolina. In this region the rates and pathways of sediment transport are important because they determine the availability of sediments for beach nourishment, seafloor habitat, and navigation. The impact of storms...
Comparison of no-purge and pumped sampling methods for monitoring concentrations of ordnance-related compounds in groundwater, Camp Edwards, Massachusetts Military Reservation, Cape Cod, Massachusetts, 2009-2010
Jennifer G. Savoie, Denis R. LeBlanc
2012, Scientific Investigations Report 2012-5084
Field tests were conducted near the Impact Area at Camp Edwards on the Massachusetts Military Reservation, Cape Cod, Massachusetts, to determine the utility of no-purge groundwater sampling for monitoring concentrations of ordnance-related explosive compounds and perchlorate in the sand and gravel aquifer. The no-purge methods included (1) a diffusion sampler...
Water-level altitudes 2012 and water-level changes in the Chicot, Evangeline, and Jasper aquifers and compaction 1973-2011 in the Chicot and Evangeline aquifers, Houston-Galveston region, Texas
Mark C. Kasmarek, Michaela R. Johnson, Jason K. Ramage
2012, Scientific Investigations Map 3230
Most of the subsidence in the Houston–Galveston region, Texas, has occurred as a direct result of groundwater withdrawals for municipal supply, commercial and industrial use, and irrigation that depressured and dewatered the Chicot and Evangeline aquifers and caused compaction of the clay layers of the aquifer sediments. This report—prepared by...
Movement of water infiltrated from a recharge basin to wells
David R. O'Leary, John A. Izbicki, Jean E. Moran, Tanya Meeth, Brandon Nakagawa, Loren Metzger, Chris Bonds, Michael J. Singleton
2012, Ground Water (50) 242-255
Local surface water and stormflow were infiltrated intermittently from a 40-ha basin between September 2003 and September 2007 to determine the feasibility of recharging alluvial aquifers pumped for public supply, near Stockton, California. Infiltration of water produced a pressure response that propagated through unconsolidated alluvial-fan deposits to 125 m below...
