California Groundwater Ambient Monitoring and Assessment (GAMA) Program Priority Basin Project--shallow aquifer assessment
Water Resources Division, U.S. Geological Survey
2013, Fact Sheet 2012-3136
The California State Water Resources Control Board’s (SWRCB) GAMA Program is a comprehensive assessment of statewide groundwater quality in California. From 2004 to 2012, the GAMA Program’s Priority Basin Project focused on assessing groundwater resources used for public drinking-water supplies. More than 2,000 public-supply wells were sampled by U.S. Geological...
Introduction to the 2002 geologic assessment of undiscovered oil and gas resources in the San Juan Basin Province, exclusive of Paleozoic rocks: Chapter 2 in Total petroleum systems and geologic assessment of undiscovered oil and gas resources in the San Juan Basin Province, exclusive of Paleozoic rocks, New Mexico and Colorado
U.S. Geological Survey San Juan Basin Assessment Team
2013, Data Series 69-F-2
The U.S Geological Survey (USGS) periodically conducts assessments of undiscovered oil and gas resources in the United States. The purpose of the U.S. Geological Survey National Oil and Gas Assessment is to develop geologically based hypotheses regarding the potential for additions to oil and gas reserves in priority areas of...
Geology and oil and gas assessment of the Fruitland Total Petroleum System, San Juan Basin, New Mexico and Colorado: Chapter 6 in Geology and Oil and Gas Assessment of the Fruitland Total Petroleum System, San Juan Basin, New Mexico and Colorado
J.L. Ridgley, S. M. Condon, J. R. Hatch
2013, Data Series 69-F-6
The Fruitland Total Petroleum System (TPS) of the San Juan Basin Province includes all genetically related hydrocarbons generated from coal beds and organic-rich shales in the Cretaceous Fruitland Formation. Coal beds are considered to be the primary source of the hydrocarbons. Potential reservoir rocks in the Fruitland TPS consist of...
Geology, sequence stratigraphy, and oil and gas assessment of the Lewis Shale Total Petroleum System, San Juan Basin, New Mexico and Colorado: Chapter 5 in Total petroleum systems and geologic assessment of undiscovered oil and gas resources in the San Juan Basin Province, exclusive of Paleozoic rocks, New Mexico and Colorado
R. F. Dubiel
2013, Data Series 69-F-5
The Lewis Shale Total Petroleum System (TPS) in the San Juan Basin Province contains a continuous gas accumulation in three distinct stratigraphic units deposited in genetically related depositional environments: offshore-marine shales, mudstones, siltstones, and sandstones of the Lewis Shale, and marginal-marine shoreface sandstones and siltstones of both the La Ventana...
Geology and oil and gas assessment of the Mancos-Menefee Composite Total Petroleum System: Chapter 4 in Total petroleum systems and geologic assessment of undiscovered oil and gas resources in the San Juan Basin Province, exclusive of Paleozoic rocks, New Mexico and Colorado
J.L. Ridgley, S. M. Condon, J. R. Hatch
2013, Data Series 69-F-4
The Mancos-Menefee Composite Total Petroleum System (TPS) includes all genetically related hydrocarbons generated from organic-rich shales in the Cretaceous Mancos Shale and from carbonaceous shale, coal beds, and humate in the Cretaceous Menefee Formation of the Mesaverde Group. The system is called a composite total petroleum system because the exact...
Geology and oil and gas assessment of the Todilto Total Petroleum System, San Juan Basin Province, New Mexico and Colorado: Chapter 3 in Total petroleum systems and geologic assessment of undiscovered oil and gas resources in the San Juan Basin Province, exclusive of Paleozoic rocks, New Mexico and Colorado
J.L. Ridgley, J. R. Hatch
2013, Data Series 69-F-3
Organic-rich, shaly limestone beds, which contain hydrocarbon source beds in the lower part of the Jurassic Todilto Limestone Member of the Wanakah Formation, and sandstone reservoirs in the overlying Jurassic Entrada Sandstone, compose the Todilto Total Petroleum System (TPS). Source rock facies of the Todilto Limestone were deposited in a...
Executive summary--2002 assessment of undiscovered oil and gas resources in the San Juan Basin Province, exclusive of Paleozoic rocks, New Mexico and Colorado: Chapter 1 in Total petroleum systems and geologic assessment of undiscovered oil and gas resources in the San Juan Basin Province, exclusive of Paleozoic rocks, New Mexico and Colorado
U.S. Geological Survey San Juan Basin Assessment Team
2013, Data Series 69-F-1
In 2002, the U.S. Geological Survey (USGS) estimated undiscovered oil and gas resources that have the potential for additions to reserves in the San Juan Basin Province (5022), New Mexico and Colorado (fig. 1). Paleozoic rocks were not appraised. The last oil and gas assessment for the province was in...
Total petroleum systems and geologic assessment of undiscovered oil and gas resources in the San Juan Basin Province, exclusive of Paleozoic rocks, New Mexico and Colorado
U.S. Geological Survey San Juan Basin Assessment Team
2013, Data Series 69-F
In 2002, the U.S. Geological Survey (USGS) estimated undiscovered oil and gas resources that have the potential for additions to reserves in the San Juan Basin Province, New Mexico and Colorado. Paleozoic rocks were not appraised. The last oil and gas assessment for the province was in 1995. There are...
Flood-inundation maps for the White River at Spencer, Indiana
Elizabeth A. Nystrom
2013, Scientific Investigations Map 3251
Digital flood-inundation maps for a 5.3-mile reach of the White River at Spencer, 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...
CRT--Cascade Routing Tool to define and visualize flow paths for grid-based watershed models
Wesley R. Henson, Rose L. Medina, C. Justin Mayers, Richard G. Niswonger, R.S. Regan
2013, Techniques and Methods 6-D2
The U.S. Geological Survey Cascade Routing Tool (CRT) is a computer application for watershed models that include the coupled Groundwater and Surface-water FLOW model, GSFLOW, and the Precipitation-Runoff Modeling System (PRMS). CRT generates output to define cascading surface and shallow subsurface flow paths for grid-based model domains. CRT requires a...
Fort Collins Science Center Ecosystem Dynamics branch--interdisciplinary research for addressing complex natural resource issues across landscapes and time
Zachary H. Bowen, Cynthia P. Melcher, Juliette T. Wilson
2013, Fact Sheet 2013-3009
The Ecosystem Dynamics Branch of the Fort Collins Science Center offers an interdisciplinary team of talented and creative scientists with expertise in biology, botany, ecology, geology, biogeochemistry, physical sciences, geographic information systems, and remote-sensing, for tackling complex questions about natural resources. As demand for natural resources increases, the issues facing...
Inhibition of bacterial oxidation of ferrous iron by lead nitrate in sulfate-rich systems
Hongmei Wang, Linfeng Gong, Charles A. Cravotta III,, Xiaofen Yang, Olli H. Tuovinen, Hailiang Dong, Xiang Fu
2013, Journal of Hazardous Materials (244-245) 718-725
Inhibition of bacterial oxidation of ferrous iron (Fe(II)) by Pb(NO3)2 was investigated with a mixed culture of Acidithiobacillus ferrooxidans. The culture was incubated at 30 °C in ferrous-sulfate medium amended with 0–24.2 mM Pb(II) added as Pb(NO3)2. Anglesite (PbSO4) precipitated immediately upon Pb addition and was the only solid phase...
Tabular data and graphical images in support of the U.S. Geological Survey National Oil and Gas Assessment--San Juan Basin Province (5022): Chapter 7 in Total petroleum systems and geologic assessment of undiscovered oil and gas resources in the San Juan Basin Province, exclusive of Paleozoic rocks, New Mexico and Colorado
T. R. Klett, P. A. Le
2013, Data Series 69-F-7
This chapter describes data used in support of the process being applied by the U.S. Geological Survey (USGS) National Oil and Gas Assessment (NOGA) project. Digital tabular data used in this report and archival data that permit the user to perform further analyses are available elsewhere on this CD–ROM. Computers...
Polyphasic characterization of Aeromonas salmonicida isolates recovered from salmonid and non-salmonid fish
A. Diamanka, T.P. Loch, R. C. Cipriano, M. Faisal
2013, Journal of Fish Diseases (36) 949-963
Michigan's fisheries rely primarily upon the hatchery propagation of salmonid fish for release in public waters. One limitation on the success of these efforts is the presence of bacterial pathogens, including Aeromonas salmonicida, the causative agent of furunculosis. This study was undertaken to determine the prevalence of A. salmonicida in...
Landscape consequences of natural gas extraction in Allegheny and Susquehanna Counties, Pennsylvania, 2004--2010
E.T. Slonecker, L.E. Milheim, C.M. Roig-Silva, A.R. Malizia
2013, Open-File Report 2013-1025
Increased demands for cleaner burning energy, coupled with the relatively recent technological advances in accessing unconventional hydrocarbon-rich geologic formations, have led to an intense effort to find and extract natural gas from various underground sources around the country. One of these sources, the Marcellus Shale, located in the Allegheny Plateau,...
Estimating hydraulic properties from tidal attenuation in the Northern Guam Lens Aquifer, territory of Guam, USA
Kolja Rotzoll, Stephen B. Gingerich, John W. Jenson, Aly I. El-Kadi
2013, Hydrogeology Journal (21) 643-654
Tidal-signal attenuations are analyzed to compute hydraulic diffusivities and estimate regional hydraulic conductivities of the Northern Guam Lens Aquifer, Territory of Guam (Pacific Ocean), USA. The results indicate a significant tidal-damping effect at the coastal boundary. Hydraulic diffusivities computed using a simple analytical solution for well responses to tidal forcings...
Demographic patterns in the peacock grouper (Cephalopholis argus), an introduced Hawaiian reef fish
Mary K. Donovan, Alan M. Friedlander, Edward E. DeMartini, Megan J. Donahue, Ivor D. Williams
2013, Environmental Biology of Fishes (96) 981-994
This study took advantage of a unique opportunity to collect large sample sizes of a coral reef fish species across a range of physical and biological features of the Hawaiian Archipelago to investigate variability in the demography of an invasive predatory coral reef fish, Cephalopholis argus (Family: Epinephelidae). Age-based demographic...
Development and application of an agricultural intensity index to invertebrate and algal metrics from streams at two scales
Ian R. Waite
2013, Journal of the American Water Resources Association (49) 431-448
Research was conducted at 28-30 sites within eight study areas across the United States along a gradient of nutrient enrichment/agricultural land use between 2003 and 2007. Objectives were to test the application of an agricultural intensity index (AG-Index) and compare among various invertebrate and algal metrics to determine indicators of...
Elevated CO2 does not offset greater water stress predicted under climate change for native and exotic riparian plants
Laura G. Perry, Patrick B. Shafroth, Dana M. Blumenthal, Jack A. Morgan, Daniel R. LeCain
2013, New Phytologist (197) 532-543
In semiarid western North American riparian ecosystems, increased drought and lower streamflows under climate change may reduce plant growth and recruitment, and favor drought‐tolerant exotic species over mesic native species. We tested whether elevated atmospheric CO2 might ameliorate these effects by improving plant water‐use efficiency.We examined the effects of CO2 and...
Arsenic in groundwater: a summary of sources and the biogeochemical and hydrogeologic factors affecting arsenic occurrence and mobility
Julia L. Barringer, Pamela A. Reilly
Paul M. Bradley, editor(s)
2013, Book chapter, Current perspectives in contaminant hydrology and water resources sustainability
Arsenic (As) is a metalloid element (atomic number 33) with one naturally occurring isotope of atomic mass 75, and four oxidation states (-3, 0, +3, and +5) (Smedley and Kinniburgh, 2002). In the aqueous environment, the +3 and +5 oxidation states are most prevalent, as the oxyanions arsenite (H3AsO3 or...
Contraception can lead to trophic asynchrony between birth pulse and resources
Jason I. Ransom, N. Thompson Hobbs, Jason Bruemmer
2013, PLoS ONE (8)
Abiotic inputs such as photoperiod and temperature can regulate reproductive cyclicity in many species. When humans perturb this process by intervening in reproductive cycles, the ecological consequences may be profound. Trophic mismatches between birth pulse and resources in wildlife species may cascade toward decreased survival and threaten the viability of...
Electrical signatures of ethanol-liquid mixtures: implications for monitoring biofuels migration in the subsurface
Yves Robert Personna, Lee Slater, Dimitrios Ntarlagiannis, Dale D. Werkema, Zoltan Szabo
2013, Journal of Contaminant Hydrology (144) 99-107
Ethanol (EtOH), an emerging contaminant with potential direct and indirect environmental effects, poses threats to water supplies when spilled in large volumes. A series of experiments was directed at understanding the electrical geophysical signatures arising from groundwater contamination by ethanol. Conductivity measurements were performed at the laboratory scale on EtOH–water...
Effects of the herbicide imazapyr on juvenile Oregon spotted frogs
Amy E. Yahnke, Christian E. Grue, Marc P. Hayes, Alexandra T. Troiano
2013, Environmental Toxicology and Chemistry (32) 228-235
Conflict between native amphibians and aquatic weed management in the Pacific Northwest is rarely recognized because most native stillwater-breeding amphibian species move upland during summer, when herbicide application to control weeds in aquatic habitats typically occurs. However, aquatic weed management may pose a risk for aquatic species present in wetlands...
Modeling the long-term fate of agricultural nitrate in groundwater in the San Joaquin Valley, California
Francis H. Chapelle, Bruce G. Campbell, Mark A. Widdowson, Mathew K. Landon
2013, Book chapter, Current perspectives in contaminant hydrology and water resources sustainability
Nitrate contamination of groundwater systems used for human water supplies is a major environmental problem in many parts of the world. Fertilizers containing a variety of reduced nitrogen compounds are commonly added to soils to increase agricultural yields. But the amount of nitrogen added during fertilization typically exceeds the amount...
Managing the effects of endocrine disrupting chemicals in wastewater-impacted streams
Paul M. Bradley, Dana W. Kolpin
2013, Book chapter, Current perspectives in contaminant hydrology and water resources sustainability
A revolution in analytical instrumentation circa 1920 greatly improved the ability to characterize chemical substances. This analytical foundation resulted in an unprecedented explosion in the design and production of synthetic chemicals during and post-World War II. What is now often referred to as the 2nd Chemical Revolution has provided substantial...
