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Water sampling
Methods of collecting a representative part of a body of water for testing in controlled conditions.
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Results 31 - 40 of 51 listed by similarity [list alphabetically]
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.
Assessing the vulnerability of public-supply wells to contamination--Edwards aquifer near San Antonio, Texas [More info]
Well vulnerability results from the young age of groundwater. Karst features permit contaminants to move into the aquifer easily, leading to a well mixed aquifer; geochemical processes do not degrade contaminants quickly.
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.
PDF Characterizing contaminant concentrations with depth by using the USGS well profiler in Oklahoma, 2003-9 [More info]
Use of specialized sampling equipment to study public water supply wells, with examples showing Arsenic in two aquifers.
PDF Condition of streams in Independence, Missouri: What is being done to protect stream health and how citizens can help [More info]
Stream water quality is affected by amount of impermeable surface in the basin; construction; reservoirs; sanitary sewer systems; land use and population density; road salt; animal waste; lawn and agricultural fertilizers, pesticides, and herbicides.
Johnson Creek basin hydrologic monitoring [More info]
Hydrologic data and analyses of surface-water, water quality, and ground water in the Johnson Creek basin in Oregon.
PDF Lake monitoring field manual [More info]
Handbook on monitoring methods for lake management, including program design, sampling methods and protocol, biota and chemical sampling methods, laboratory methods, preservation of data and samples, glossary, and bibliography. (PDF file, 92 pp.)
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.
Mercury in stream ecosystems - publications [More info]
Publications dealing with the occurrence, methods of monitoring, and changes in the concentration of mercury within streams and nearby areas
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