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2. Summary of available state ambient stream-water-quality data, 1990-98, and limitations for national assessment
3. Summary of available state ambient stream-water-quality data, 1990-98, and limitations for national assessment
4. Development of health-based screening levels for use in state- or local-scale water-quality assessments
5. Evaluation of candidate rain gages for upgrading precipitation measurement tools for the National Atmospheric Deposition Program
6. External quality-assurance results for the National Atmospheric Deposition Program/National Trends Network, 1997-99
7. External quality-assurance results for the National Atmospheric Deposition Program/National Trends Network, 1997-99
8. A national survey of methyl tert-butyl ether and other volatile organic compounds in drinking-water sources : results of the randon [i.e. random] survey
9. Nutrients in shallow ground waters beneath relatively undeveloped areas in the conterminous United States
10. Occurrence and temporal variability of methyl tert-butyl ether (MTBE) and other volatile organic compounds in select sources of drinking water : results of the focused survey
11. Occurrence of volatile organic compounds in drinking water from the United States : results from archived chromatograms and water samples, 1989-2000
12. Occurrence of volatile organic compounds in drinking water from the United States : results from archived chromatograms and water samples, 1989-2000
13. Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory : determination of wastewater compounds by polystyrene-divinylbenzene solid-phase extraction and capillary-column gas chromatography/mass spectrometry
14. Occurrence and status of volatile organic compounds in ground water from rural, untreated, self-supplied domestic wells in the United States, 1986-99
15. U.S. Geological Survey Karst Interest Group proceedings, Shepherdstown, West Virginia August 20-22, 2002
16. Users manual for an open-channel streamflow model based on the diffusion analogy
17. An alternative regionalization scheme for defining nutrient criteria for rivers and streams
18. Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory : determination of moderate-use pesticides and selected degradates in water by C-18 solid-phase extraction and gas chromatography/mass spectrometry
19. Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory : determination of pesticides in water by graphitized carbon-based solid-phase extraction and high-performance liquid chromatography/mass spectrometry
20. Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory : determination of pesticides in water by graphitized carbon-based solid-phase extraction and high-performance liquid chromatography/mass spectrometry
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