Hydrology and climate of four watersheds in eastern Puerto Rico: Chapter C in Water quality and landscape processes of four watersheds in eastern Puerto Rico
Sheila F. Murphy, Robert F. Stallard
Sheila F. Murphy, Robert F. Stallard, editor(s)
2012, Professional Paper 1789-C
Puerto Rico lies directly in the path of the easterly trade winds, which deliver steady rainfall to the mountains and steer tropical wave systems toward the island. Hurricanes and tropical storms derived from these tropical waves differ in frequency and intensity, contributing to substantial interannual variation in precipitation and stream...
Weathering processes in the Rio Icacos and Rio Mameyes watersheds in Eastern Puerto Rico: Chapter I in Water quality and landscape processes of four watersheds in eastern Puerto Rico
Heather L. Buss, Arthur F. White
Sheila F. Murphy, Robert F. Stallard, editor(s)
2012, Professional Paper 1789-I
Streams draining watersheds of the two dominant lithologies (quartz diorite and volcaniclastic rock) in the Luquillo Experimental Forest of eastern Puerto Rico have very high fluxes of bedrock weathering products. The Río Blanco quartz diorite in the Icacos watershed and the Fajardo volcaniclastic rocks in the Mameyes watershed have some...
Water quality and mass transport in four watersheds in eastern Puerto Rico: Chapter E in Water quality and landscape processes of four watersheds in eastern Puerto Rico
Robert F. Stallard, Sheila F. Murphy
Sheila F. Murphy, Robert F. Stallard, editor(s)
2012, Professional Paper 1789-E
Water quality of four small watersheds in eastern Puerto Rico has been monitored since 1991 as part of the U.S. Geological Survey's Water, Energy, and Biogeochemical Budgets program. These watersheds represent a montane, humid-tropical environment and differ in geology and land cover. Two watersheds are located on granitic rocks, and...
Physiography, geology, and land cover of four watersheds in eastern Puerto Rico: Chapter A in Water quality and landscape processes of four watersheds in eastern Puerto Rico
Sheila F. Murphy, Robert F. Stallard, Matthew C. Larsen, William A. Gould
Sheila F. Murphy, editor(s)
2012, Professional Paper 1789-A
Four watersheds with differing geology and land cover in eastern Puerto Rico have been studied on a long-term basis by the U.S. Geological Survey to evaluate water, energy, and biogeochemical budgets. These watersheds are typical of tropical, island-arc settings found in many parts of the world. Two watersheds are located...
Regional regression models of watershed suspended-sediment discharge for the eastern United States
David C. Roman, Richard M. Vogel, Gregory E. Schwarz
2012, Journal of Hydrologic Engineering (472-4723) 53-62
Estimates of mean annual watershed sediment discharge, derived from long-term measurements of suspended-sediment concentration and streamflow, often are not available at locations of interest. The goal of this study was to develop multivariate regression models to enable prediction of mean annual suspended-sediment discharge from available basin characteristics useful for most...
The hydrology of a drained topographical depression within an agricutlural field in north-central Iowa
Jason L. Roth, Paul D. Capel
2012, Transactions of the American Society of Agricultural and Biological Engineers (55) 1801-1814
North-central Iowa is an agriculturally intensive area comprising the southeastern portion of the Prairie Pothole Region, a landscape containing a high density of enclosed topographical depressions. Artificial drainage practices have been implemented throughout the area to facilitate agricultural production. Vertical surface drains are utilized to drain the topographical depressions that...
A basin-scale approach for assessing water resources in a semiarid environment: San Diego region, California and Mexico
L. E. Flint, A. L. Flint, Bernard J. Stolp, W.R. Danskin
2012, Hydrology and Earth System Sciences (16) 3817-3833
Many basins throughout the world have sparse hydrologic and geologic data, but have increasing demands for water and a commensurate need for integrated understanding of surface and groundwater resources. This paper demonstrates a methodology for using a distributed parameter water-balance model, gaged surface-water flow, and a reconnaissance-level groundwater flow model...
A random biogeochemical walk into three soda lakes of the western USA: With an introduction to a few of their microbial denizens
Ronald S. Oremland
Joseph Seckbach, Aharon Oren, Helga Stan-Lotter, editor(s)
2012, Book chapter, Polyextremophiles -- Organisms living under multiple stress
Influence of permafrost distribution on groundwater flow in the context of climate-driven permafrost thaw: Example from Yukon Flats Basin, Alaska, United States
Michelle Ann Walvoord, Clifford I. Voss, Tristan P. Wellman
2012, Water Resources Research (48)
Understanding the role of permafrost in controlling groundwater flow paths and fluxes is central in studies aimed at assessing potential climate change impacts on vegetation, species habitat, biogeochemical cycling, and biodiversity. Recent field studies in interior Alaska show evidence of hydrologic changes hypothesized to result from permafrost degradation. This study...
Preliminary assessment of channel stability and bed-material transport in the Tillamook Bay tributaries and Nehalem River basin, northwestern Oregon
Krista L. Jones, Mackenzie K. Keith, Jim E. O'Connor, Joseph F. Mangano, J. Rose Wallick
2012, Open-File Report 2012-1187
This report summarizes a preliminary study of bed-material transport, vertical and lateral channel changes, and existing datasets for the Tillamook (drainage area 156 square kilometers [km2]), Trask (451 km2), Wilson (500 km2), Kilchis (169 km2), Miami (94 km2), and Nehalem (2,207 km2) Rivers along the northwestern Oregon coast. This study,...
Passive thermal refugia provided warm water for Florida manatees during the severe winter of 2009-2010
B.M. Stith, D. H. Slone, M. de Wit, H.H. Edwards, C.A. Langtimm, E.D. Swain, L.E. Soderqvist, J.P. Reid
2012, Marine Ecology Progress Series (462) 287-301
Haloclines induced by freshwater inflow over tidal water have been identified as an important mechanism for maintaining warm water in passive thermal refugia (PTR) used by Florida manatees Trichechus manatus latirostris during winter in extreme southwestern Florida. Record-setting cold during winter 2009–2010 resulted in an unprecedented number of manatee deaths,...
Changes in water budgets and sediment yields from a hypothetical agricultural field as a function of landscape and management characteristics--A unit field modeling approach
Jason L. Roth, Paul D. Capel
2012, Scientific Investigations Report 2012-5203
Crop agriculture occupies 13 percent of the conterminous United States. Agricultural management practices, such as crop and tillage types, affect the hydrologic flow paths through the landscape. Some agricultural practices, such as drainage and irrigation, create entirely new hydrologic flow paths upon the landscapes where they are implemented. These hydrologic...
waterData--An R package for retrieval, analysis, and anomaly calculation of daily hydrologic time series data, version 1.0
Karen R. Ryberg, Aldo V. Vecchia
2012, Open-File Report 2012-1168
Hydrologic time series data and associated anomalies (multiple components of the original time series representing variability at longer-term and shorter-term time scales) are useful for modeling trends in hydrologic variables, such as streamflow, and for modeling water-quality constituents. An R package, called waterData, has been developed for importing daily hydrologic...
Quantification of water-level variability effect on plant species populations using paleoecological and hydrological time series data
Edwin A. Roehl Jr., Paul Conrads, Christopher Bernhardt
2012, Conference Paper, Proceedings of the 2012 South Carolina Water Resources Conference
Soil cores provide valuable data on historical changes in vegetation and hydrologic conditions. Empirical models were developed to quantify the effect of meteorological and hydrologic forcing on plant species distributions over a 110-year period in Water Conservation Area 1 (WCA1) in the Florida Everglades, also known as the Arthur R....
Geologic map of the north polar region of Mars
Kenneth L. Tanaka, Corey M. Fortezzo
2012, Scientific Investigations Map 3177
The north polar region of Mars occurs within the central and lowest part of the vast northern plains of Mars and is dominated by the roughly circular north polar plateau, Planum Boreum. The northern plains formed very early in Martian time and have collected volcanic flows and sedimentary materials shed...
Simulation of daily streamflows at gaged and ungaged locations within the Cedar River Basin, Iowa, using a Precipitation-Runoff Modeling System model
Daniel E. Christiansen
2012, Scientific Investigations Report 2012-5213
The U.S. Geological Survey, in cooperation with the Iowa Department of Natural Resources, conducted a study to examine techniques for estimation of daily streamflows using hydrological models and statistical methods. This report focuses on the use of a hydrologic model, the U.S. Geological Survey's Precipitation-Runoff Modeling System, to estimate daily...
Hydrological information products for the Off-Project Water Program of the Klamath Basin Restoration Agreement
Daniel T. Snyder, John C. Risley, Jonathan V. Haynes
2012, Open-File Report 2012-1199
The Klamath Basin Restoration Agreement (KBRA) was developed by a diverse group of stakeholders, Federal and State resource management agencies, Tribal representatives, and interest groups to provide a comprehensive solution to ecological and water-supply issues in the Klamath Basin. The Off-Project Water Program (OPWP), one component of the KBRA, has...
Quantity and quality of stormwater collected from selected stormwater outfalls at industrial sites, Fort Gordon, Georgia, 2011
Doug D. Nagle, Wladmir B. Guimaraes
2012, Open-File Report 2012-1035
An assessment of the quantity and quality of stormwater runoff associated with industrial activities at Fort Gordon was conducted from January through December 2011. The assessment was provided to satisfy the requirements from a general permit that authorizes the discharge of stormwater under the National Pollutant Discharge Elimination System from...
Data resources for the Wyoming Landscape Conservation Initiative (WLCI) Integrated Assessment (IA)
Timothy J. Assal, Steven L. Garman, Zachary H. Bowen, Patrick J. Anderson, Daniel J. Manier, Robert R. McDougal
2012, Data Series 700
The data contained in this report were compiled, modified, and analyzed for the Wyoming Landscape Conservation Initiative (WLCI) Integrated Assessment (IA). The WLCI is a long-term science based effort to assess and enhance aquatic and terrestrial habitats at a landscape scale in southwest Wyoming while facilitating responsible energy development through...
Simulation of groundwater and surface-water resources and evaluation of water-management alternatives for the Chamokane Creek basin, Stevens County, Washington
D. Matthew Ely, Sue C. Kahle
2012, Scientific Investigations Report 2012-5224
A three-dimensional, transient numerical model of groundwater and surface-water flow was constructed for Chamokane Creek basin to better understand the groundwater-flow system and its relation to surface-water resources. The model described in this report can be used as a tool by water-management agencies and other stakeholders to quantitatively evaluate the...
Biotic, water-quality, and hydrologic metrics calculated for the analysis of temporal trends in National Water Quality Assessment Program Data in the Western United States
Stephen M. Wiele, Anne M.D. Brasher, Matthew P. Miller, Jason T. May, Kurt D. Carpenter
2012, Open-File Report 2012-1203
The U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program was established by Congress in 1991 to collect long-term, nationally consistent information on the quality of the Nation's streams and groundwater. The NAWQA Program utilizes interdisciplinary and dynamic studies that link the chemical and physical conditions of streams (such as flow...
Digital database architecture and delineation methodology for deriving drainage basins, and a comparison of digitally and non-digitally derived numeric drainage areas
Jean A. Dupree, Richard M. Crowfoot
2012, Techniques and Methods 11-C6
The drainage basin is a fundamental hydrologic entity used for studies of surface-water resources and during planning of water-related projects. Numeric drainage areas published by the U.S. Geological Survey water science centers in Annual Water Data Reports and on the National Water Information Systems (NWIS) Web site are still primarily...
Streamflow record extension for selected streams in the Susitna River Basin, Alaska
Janet H. Curran
2012, Scientific Investigations Report 2012-5210
Daily streamflow records for water years 1950–2010 in the Susitna River Basin range in length from 4 to 57 years, and many are distributed within that period in a way that might not adequately represent long-term streamflow conditions. Streamflow in the basin is affected by the Pacific Decadal Oscillation (PDO),...
Development and application of downscaled hydroclimatic predictor variables for use in climate vulnerability and assessment studies
James Thorne, Ryan Boynton, Lorraine Flint, Alan Flint, Thuy N’goc Le
2012, Report
This paper outlines the production of 270-meter grid-scale maps for 14 climate and derivative hydrologic variables for a region that encompasses the State of California and all the streams that flow into it. The paper describes the Basin Characterization Model (BCM), a map-based, mechanistic model used to process the hydrological...
Conceptualization of the predevelopment groundwater flow system and transient water-level responses in Yucca Flat, Nevada National Security Site, Nevada
Joseph M. Fenelon, Donald S. Sweetkind, Peggy E. Elliott, Randell J. Laczniak
2012, Scientific Investigations Report 2012-5196
Contaminants introduced into the subsurface of Yucca Flat, Nevada National Security Site, by underground nuclear testing are of concern to the U.S. Department of Energy and regulators responsible for protecting human health and safety. The potential for contaminant movement away from the underground test areas and into the accessible environment...
