USGS > Science Topics > by Author > T

Toxic Substances Hydrology Program
Agriculture, Amphibians, Archaea, Arsenic, Atmospheric composition, Bibliographies, Bioaccumulation, Biodegradation, Bioremediation, Contaminant transport, Contamination and pollution, Decomposers, Ecology, Ecosystem functions, Ecosystem monitoring, Ecotoxicology, Endocrinology, Environmental assessment, Estuarine ecosystems, Field experiments, Field inventory and monitoring, Field sampling, Fish, Fracture (geologic), Geophysics, Geothermal resources, Groundwater and surface-water interaction, Groundwater flow, Groundwater quality, Human environmental safety, Hydrogeology, Hydrologic processes, Hydrology, Image collections, Laboratory methods, Mercury, Mercury contamination, Microbiology, Microscopy, Ocean temperature, Pathology, Pesticide and herbicide contamination, Pharmaceutical contamination, Phytoplankton, Planetary sciences, Plant and animal testing, Reaction transport, Remediation, River systems, Science programs, Sediment transport, Specimen collecting, Streamflow, Surface water quality, Tracer study, Waste treatment and disposal, Wastewater discharge, Water chemistry, Water quality, Water sampling, Aquifers, Deserts, Disposal sites, Streams, Thermal features

Agricultural chemicals [More info]
Overview of the Toxic Substances Hydrology Program role in investigating the occurrence and fate of agricultural chemicals with links to investigations, headlines, on-line fact sheets, new publications, bibliographies and photo gallery.
Amargosa Desert research site [More info]
Online reports, site description and photographs of the Amargosa Desert research site monitoring low level radioactive waste.
Biogeochemical and geohydrologic processes in a landfill-impacted alluvial aquifer, Norman, Oklahoma [More info]
Discussion and links to research for the multi-disciplinary investigation on the Norman Landfill located on alluvium associated with the Canadian River in central Oklahoma.
Biosolids, Animal Manure, and Earthworms: Is There a Connection? [More info]
Research findings and examples of application to real problems--how household contaminants accumulate in and effect the environment
Climate-Driven Ocean Changes Affect Estuaries [More info]
Research findings and examples of application to real problems--Pacific Ocean cooling triggers phytoplankton blooms in San Francisco Bay.
Contamination in Fractured Rock Aquifers [More info]
Overview of fractured rock research aimed at understanding the movement of water through fracture networks, and characterize field conditions influencing contaminant migration. Includes programs and publications.
Detecting Amphibian-Killing Fungus Helps Scientists Study Amphibian Declines [More info]
Research findings and examples of application to real problems--a new method to track down amphibian disease in the environment.
Midcontinent Agricultural Chemical Research Program [More info]
Homepage for the research on occurrence, movement, flux, fate, and effects of agricultural chemicals, such as pesticides, in 25 states by the Midcontinent Agricultural Chemical Research Project (MACRP) with links to study results and publications.
National assessment of mercury in aquatic ecosystems [More info]
Overview of three research programs including determining levels of mercury at selected sites in water, sediment and fish, mercury emissions into the atmosphere, and mercury cycling in the Everglades National Park, Florida.
Pesticides in Midwestern rivers, 1989-2002 [More info]
Overview of aspects of research on pesticides and herbicides in Midwestern rivers with collection of data, results over a period of time, online publications, and bibliography.
Toxic Substances Hydrology Program [More info]
Homepage for the Toxic Substances Hydrology Program, which provides scientific information on contaminated sites and on human and environmental health. Links to news, topical information, investigations, meetings, publications, and photos.
Trichloroethylene (TCE) in fractured bedrock, Naval Air Warfare Center, Trenton, N.J. [More info]
Research on contamination by trichloroethylene (TCE) in fractured rock at the Naval Air Warfare Center in Trenton, N.J. with links to site description, bibliography, online reports, and findings.
Waste disposal and contaminant migration in the arid Southwest: Amargosa Desert Research Site, Nevada [More info]
Links to studies at the Amargosa Desert Research Site by the USGS Toxic Substances Hydrology Program studying the subsurface migration and fate of contaminants in arid environments. Links to news, remediation, photos, bibliography and techniques.
Mercury Concentrations in Streams Found to Go Through Daily Cycles [More info]
Research findings and examples of application to real problems--highly variable conditions cause the production of toxic methyl mercury in the environment which accumulates in fish.
What Mobilizes Arsenic in Ground Water? [More info]
Research findings and examples of application to real problems--chemical reactions between nitrate, iron, and oxygen can affect the mobility of trace amounts of arsenic.
Framework for Assessing the Sustainability of Monitored Natural Attenuation [More info]
Research findings and examples of application to real problems--When can natural processes to reduce, or even destroy, contaminants at toxic waste sites be relied on?
Endocrine Disruption Found in Fish Exposed to Municipal Wastewater [More info]
Research findings and examples of application to real problems--cause and potential effects of wastewater on fish in streams is explored.
Wastewater Indicators Shown to Degrade in Streams [More info]
Research findings and examples of application to real problems--the stability of contaminants that indicate human wastewater needs to be considered.
Household Chemicals and Drugs Found in Biosolids from Wastewater Treatment Plants [More info]
Research findings and examples of application to real problems--biosolids have high concentrations of household contaminants compared to treated liquid wastewater effluent.
Scientists discover analog for extraterrestrial life in Idaho Hot Springs [More info]
Report on a community of microscopic organisms, Archaea, found deep in an Idaho hot spring living on hydrogen and carbon dioxide that could possibly exist on other planets. Includes links to related studies, investigators, and microbiology.