Design of the National Water-Quality Assessment Program; occurrence and distribution of water-quality conditions

Gilliom, Robert J.; Alley, William M.; Gurtz, Martin E.

doi:10.3133/cir1112

Cited by 239 publications

(132 citation statements)

References 11 publications

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“…Procedures used to collect and process water samples followed standard USGS guidelines described by the US Geological Survey (2001), Shelton (1994), Gilliom et al (1995), and Mueller et al (1997). Water samples were analyzed at the USGS National Water Quality Laboratory (NWQL) in Denver, CO, USA, using methods described by Fishman and Friedman (1989), Sandstrom et al (1992), Sandstrom (1995), Zaugg et al (1995), and Madsen et al (2003).…”

Section: Methodsmentioning

confidence: 99%

Influence of fipronil compounds and rice-cultivation land-use intensity on macroinvertebrate communities in streams of southwestern Louisiana, USA

Mize

Porter

Demcheck

2008

Environmental Pollution

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Section: Methodsmentioning

confidence: 99%

Influence of fipronil compounds and rice-cultivation land-use intensity on macroinvertebrate communities in streams of southwestern Louisiana, USA

Mize

Porter

Demcheck

2008

Environmental Pollution

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“…The fourth method used to determine baseline concentrations involved the use of indicator sites, which had been designated by each NAWQA study unit as having relatively uniform and representative land use in the basin in which the sample was collected (32). Types of indicator sites include agricultural, cropland, orchards and vineyards, pasture, rangeland, forested, reference, urban, residential urban, new residential urban, commercial or industrial, and residential or commercial.…”

Section: Methodsmentioning

confidence: 99%

Trace-Element Concentrations in Streambed Sediment Across the Conterminous United States

Rice

1999

Environ. Sci. Technol.

132

101

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Trace-element concentrations in 541 streambed-sediment samples collected from 20 study areas across the conterminous United States were examined as part of the National Water-Quality Assessment Program of the U.S. Geological Survey. Sediment samples were sieved and the <63-µm fraction was retained for determination of total concentrations of trace elements. Aluminum, iron, titanium, and organic carbon were weakly or not at all correlated with the nine trace elements examined: arsenic, cadmium, chromium, copper, lead, mercury, nickel, selenium, and zinc. Four different methods of accounting for background/ baseline concentrations were examined; however, normalization was not required because field sieving removed most of the background differences between samples. The sum of concentrations of trace elements characteristic of urban settingsscopper, mercury, lead, and zincswas well correlated with population density, nationwide. Median concentrations of seven trace elements (all nine examined except arsenic and selenium) were enriched in samples collected from urban settings relative to agricultural or forested settings. Forty-nine percent of the sites sampled in urban settings had concentrations of one or more trace elements that exceeded levels at which adverse biological effects could occur in aquatic biota.

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“…The NAWQA program focuses on major river basins across the United States (Gilliom et al 1995). Review of data collected during [1993][1994][1995][1996][1997][1998] indicated that studies conducted in 24 river basins included a combined total of 55 sites at which three consecutive stream reaches were sampled within a given year and where one of these stream reaches also was sampled during three consecutive years (Table 1).…”

Section: Methodsmentioning

confidence: 99%

Effects of Electrofishing Gear Type on Spatial and Temporal Variability in Fish Community Sampling

Meador

McIntyre

2003

Transactions of the American Fisheries Society

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Abstract.-Fish community data collected from 24 major river basins between 1993 and 1998 as part of the U.S. Geological Survey's National Water-Quality Assessment Program were analyzed to assess multiple-reach (three consecutive reaches) and multiple-year (three consecutive years) variability in samples collected at a site. Variability was assessed using the coefficient of variation (CV; SD/mean) of species richness, the Jaccard index (JI), and the percent similarity index (PSI). Data were categorized by three electrofishing sample collection methods: backpack, towed barge, and boat. Overall, multiple-reach CV values were significantly lower than those for multiple years, whereas multiple-reach JI and PSI values were significantly greater than those for multiple years. Multiple-reach and multiple-year CV values did not vary significantly among electrofishing methods, although JI and PSI values were significantly greatest for backpack electrofishing across multiple reaches and multiple years. The absolute difference between mean species richness for multiple-reach samples and mean species richness for multiple-year samples was 0.8 species (9.5% of total species richness) for backpack samples, 1.7 species (10.1%) for towed-barge samples, and 4.5 species (24.4%) for boat-collected samples. Review of boat-collected fish samples indicated that representatives of four taxonomic families-Catostomidae, Centrarchidae, Cyprinidae, and Ictaluridae-were collected at all sites. Of these, catostomids exhibited greater interannual variability than centrarchids, cyprinids, or ictalurids. Caution should be exercised when combining boat-collected fish community data from different years because of relatively high interannual variability, which is primarily due to certain relatively mobile species. Such variability may obscure longer-term trends.

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Design of the National Water-Quality Assessment Program; occurrence and distribution of water-quality conditions

Cited by 239 publications

References 11 publications

Influence of fipronil compounds and rice-cultivation land-use intensity on macroinvertebrate communities in streams of southwestern Louisiana, USA

Influence of fipronil compounds and rice-cultivation land-use intensity on macroinvertebrate communities in streams of southwestern Louisiana, USA

Trace-Element Concentrations in Streambed Sediment Across the Conterminous United States

Effects of Electrofishing Gear Type on Spatial and Temporal Variability in Fish Community Sampling

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