National Water-Quality Assessment (NAWQA) Program
More Information about Methods
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Stewart, Jana S., 1998, Combining satellite data with ancillary data to produce a refined land-use/land-cover map: U.S. Geological Survey Water-Resources Investigations Report 97-4203, 11 p. Available Online
Stewart, Jana S., 1994, Assessment of alternative methods for stratifying landsat TM data to improve land cover classification accuracy across areas with physiographic variation: University of Wisconsin-Madison, Master of Science thesis, 159 p.
Stoner, J.D., Cowdery, T.K., and Puckett, L.J., 1997, Ground-water age dating and other tools used to assess land-use effects on water quality: U.S. Geological Survey Water-Resources Investigations Report 97-4150, 6 p. Available Online
Stribling, J.B., Moulton II, S.R., and Lester, G.T., 2003, Determining the quality of taxonomic data: North American Benthological Society, vol. 22, p. 621-631 Available Online
Swanson, Robert B., 1995, Methods for monitoring physical, chemical, and biological characteristics at selected wetlands in the Platte River Basin, Nebraska: in Campbell, Kenneth L., ed. 1995 Versatility of wetlands in the agricultural landscape: American Society of Agricultural Engineers, p. 515-524.
Taglioli, Brandon L., Delzer, Gregory C., and Zogorski, John S., 2001, Study design and analytical results used to evaluate carry-over contamination by volatile organic compounds in surface- and ground-water sampling procedures: U.S. Geological Survey Open-File Report 00-384, 36 p. Available Online
Terrio, Paul J., 1993, Relations of changes in wastewater-treatment practices to changes in stream-water quality during 1978-88 in the Chicago area, Illinois, and implications for regional and National water-quality assessments: U.S. Geological Survey Water-Resources Investigations Report 93-4188, 56 p. Available Online
Thelin, G.P., and Stone, W.W., 2010, Method for estimating annual atrazine use for counties in the conterminous United States, 1992-2007: U.S. Geological Survey Scientific Investigations Report 2010-5034, 129 p. Available Online
Thiros, S.A., Bender, D.A., Mueller, D.K., Rose, D.L., Olsen, L.D., Martin, J.D., Bernard, B., and Zogorski J.S., 2011, Design and evaluation of a field study on the contamination of selected volatile organic compounds and wastewater-indicator compounds in blanks and groundwater samples: U.S. Geological Survey Scientific Investigations Report 2011-5027, 85 p. Available Online
Thoms, R.B., Johnson, R.L., and Healy, R.W., 2006, User's guide to the variably saturated flow (VSF) process for MODFLOW: U.S. Geological Survey Techniques and Methods, 6-A18, 58 p. Available Online
Toccalino, P.L., 2007, Development and application of health-based screening levels for use in water-quality assessments: U.S. Geological Survey Scientific Investigations Report 2007-5106, 12 p. Available Online
Toccalino, P.L., and Norman, J.E., 2006, Health-Based Screening Levels to Evaluate U.S. Geological Survey Ground-Water Quality Data: Risk Analysis, vol. 26, no. 5, p. 1339-1348. doi: 10.1111/j.1539-6924.2006.00805.x Available Online
Toccalino, P.L., Zogorski, J.S., and Norman, J.E., 2005, Health-based screening levels and their application to water-quality data: U.S. Geological Survey Fact Sheet 2005-3059, 2 p. Available Online
Toccalino, Patricia L., Norman, Julia E., Phillips, Robyn H., Kauffman, Leon J., Stackelberg, Paul E., Nowell, Lisa H., Krietzman, Sandra J., and Post, Gloria B., 2004, Application of health-based screening levels to ground-water quality data in a state-scale pilot effort: U.S. Geological Survey Scientific Investigations Report 2004-5174, 64 p. Available Online
Toccalino, Patricia, Nowell, Lisa, Wilber, William, Zogorski, John, Donohue, Joyce, Eiden, Catherine, Krietzman, Sandra, and Post, Gloria, 2003, Development of health-based screening levels for use in state- or local- scale water-quality assessments: U.S. Geological Survey Water-Resources Investigations Report 03-4054, 22 p. Available Online
Valder, Joshua F., Delzer, Gregory C., Price, Curtis V., and Sandstrom, Mark W., 2008, Study design and percent recoveries of anthropogenic organic compounds with and without the addition of ascorbic acid to preserve water samples containing free chlorine, 2004-06: U.S. Geological Survey Open-File Report 2008-1226, 86 p. Available Online
Waite, Ian R., 2013, Development and application of an agricultural intensity index to invertebrate and algal metrics from streams at two scales: Journal of the American Water Resources Association, vol. 49, no. 2, p. 431-448. doi: 10.1111/jawr.12032 Available Online
Walsh, S.J., and Meador, M.R., 1998, Guidelines for quality assurance and quality control of fish taxonomic data collected as part of the National Water-Quality Assessment Program: U.S. Geological Survey Water-Resources Investigations Report 98-4239, 33 p. Available Online
Warner, K.L., and Arnold, T.L., 2005, Framework for regional synthesis of water-quality data for the glacial aquifer system in the United States: U.S. Geological Survey Scientific Investigations Report 2005-5223, 6 p. Available Online
Werner, S.L., Burkhardt, M.R., and DeRusseau, S.N., 1996, Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Pesticides in Water by Carbopak-B Solid-Phase Extraction and High-Performance Liquid Chromatography: U.S. Geological Survey Open-File Report 96-216, 42 p. Available Online
Whitman, Matthew S., Moran, Edward H., and Ourso, Robert T., 2003, Photographic techniques for characterizing streambed particle sizes: Transactions of the American Fisheries Society, vol. 132, no. 3, p. 605-610. doi: 10.1577/1548-8659(2003)132<0605:PTFCSP>2.0.CO;2 Available Online
Whitman, Matthew Scott, 2002, A protocol for assessing the impacts of urbanization on Coho salmon with application to Chester Creek, Anchorage, Alaska: University of Alaska Fairbanks, Master of Science Thesis, 79 p.
Wilson, John T., Baker, Nancy T., Moran, Michael J., Crawford, Charles G., Nowell, Lisa H., Toccalino, Patricia L., and Wilber, William G., 2008, Methods and Sources of Data Used to Develop Selected Water-Quality Indicators for Streams and Ground Water for the 2007 Edition of The State of the Nation's Ecosystems Report with Comparisons to the 2002 Edition: U.S. Geological Survey Open-File Report 2008-1110, 61 p. Available Online
Wolff, R.H., 2005, Feasibility using benthic invertebrates as indicators of stream quality in Hawaii: U.S. Geological Survey Scientific Investigations Report 2005-5079, 78 p. Available Online
Wolock, D.M., Winter, T.C., and McMahon, G., 2004, Delineation and evaluation of hydrologic-landscape regions in the United States using geographic information system tools and multivariate statistical analyses: Environmental Management, vol. 34 (Supplement 1), p. S71-S88. doi: 10.1007/s00267-003-5077-9 Available Online
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