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  3. Watershed characteristics and streamwater constituent load data, models, and estimates for 15 watersheds in Gwinnett County, Georgia, 2000-2021
  4. 09: Streamwater quality assurance sample results for 19 water-quality constituents in 15 watersheds in Gwinnett County, Georgia for years 2000-2020

09: Streamwater quality assurance sample results for 19 water-quality constituents in 15 watersheds in Gwinnett County, Georgia for years 2000-2020

Dates

Publication Date
Start Date
2000-01-10
End Date
2020-01-24

Citation

Aulenbach, B.T., Henley, J.C., and Hopkins, K.G., 2023, Watershed characteristics and streamwater constituent load data, models, and estimates for 15 watersheds in Gwinnett County, Georgia, 2000-2021: U.S. Geological Survey data release, https://doi.org/10.5066/P9G8HZTY.

Summary

This dataset contains quality assurance sample concentrations for 19 constituents for the 15 monitored watersheds in Gwinnett County, Georgia, from 2000 to 2020. Samples include 431 replicate pairs and 335 field blanks. Replicate sampling allows for comparison of water quality to assess the combined variability in sample representativeness and laboratory precision and can also be used to identify possible sample contamination. Field blanks, samples of deionized “blank” water collected using the same sampling equipment and similar methodology as routine samples, were used to identify any possible contamination from field collection equipment and methodology.

Contacts

Point of Contact :
Brent T Aulenbach
Originator :
Brent T Aulenbach, Joshua C Henley, Kristina G Hopkins
Metadata Contact :
Brent T Aulenbach
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase

Attached Files

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09_GwinnettCoGa_QualityAssuranceSamples.csv
“Gwinnett County streamwater quality assurance data” 		671.23 KB text/csv
09_GwinnettCoGa_QualityAssuranceSamples.xml
“Gwinnett County streamwater quality assurance metadata”
Original FGDC Metadata
View 		26.59 KB application/fgdc+xml

Purpose

The purpose of this dataset is to document the quality assurance samples collected to assess sample representativeness, laboratory precision, and possible sample contamination. The quality assessment summary from these samples are contained in Appendix 1, “Quality assurance, quality control, and quality assessment summary” of the USGS Scientific Investigations Report "Hydrology, water-quality, and watershed characteristics in 15 watersheds in Gwinnett County, Georgia, 2002-20". This study is part of a long-term program to monitor and analyze the hydrologic and water-quality conditions of 15 watersheds in Gwinnett County, Georgia by the U.S. Geological Survey (USGS) in cooperation with Gwinnett County Department of Water Resources.

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