National Water-Quality Assessment (NAWQA) Project
More Information about Methods
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McMahon, Gerard, and Cuffney, Thomas, 2000, Quantifying urban intensity in drainage basins for assessing stream ecological conditions: Journal of the American Water Resources Association, vol. 36, no. 6, December 2000, p. 1247-1261. doi: 10.1111/j.1752-1688.2000.tb05724.x Available Online
McCarthy, K.A., and Johnson, H.M., 2009, Effect of agricultural practices on hydrology and water chemistry in a small irrigated catchment, Yakima River basin, Washington: U.S. Geological Survey Scientific Investigations Report 2009-5030, 22 p. Available Online
McCarthy, K.A., and Capel, P.D., 2009, A whole-system approach to understanding agricultural chemicals in the environment: U.S. Geological Survey Fact Sheet 2009-3042, 6 p., on-line only. Available Online
Maupin, Molly A., 1997, Agricultural land-use classification using Landsat imagery data, and estimates of irrigation water use in Gooding, Jerome, Lincoln, and Minidoka Counties, 1992 water year, Upper Snake River Basin, Idaho and western Wyoming: U.S. Geological Survey Water-Resources Investigations Report 97-4115, 29 p. Available Online
Mattraw, H.C., Wilber, W.G., and Alley, W.M., 1989, Quality-assurance plan for the pilot National Water-Quality Assessment Program: U.S. Geological Survey Open-File Report 88-726, 21 p. Available Online
Martin, Jeffrey D., 2002, Variability of pesticide detections and concentrations in field replicate water samples collected for the National Water-Quality Assessment Program, 1992-97: U. S. Geological Survey Water-Resources Investigations Report 01-4178, 84 p. Available Online
Martin, J.D., Stone, W.W., Wydoski, D.S., and Sandstrom, M.W., 2009, Adjustment of pesticide concentrations for temporal changes in analytical recovery, 1992-2006: U.S. Geological Survey Scientific Investigations Report 2009-5189, 24 p. Available Online
Martin, G.R., Smoot, J.L., and White, K.D., 1992, A comparison of surface-grab and cross sectionally integrated stream-water-quality sampling methods: Water Environment Research, vol. 64, no. 7, 866-876 p.
Marron, Donna C. and Blanchard, Stephen F., 1995, Surface-water-quality assessment of the Upper Illinois, Indiana, and Wisconsin: Cross sectional and depth variation of water-quality constituents and properties in the Upper Illinois River Basin, 1987-88: U.S. Geological Survey Water-Resources Investigations Report 95-4021, 19 p. Available Online
Manning, T.K., Smith, K.E., Wood, C.D., and Williams, J.B., 1994, Pesticide- sampling equipment, sample-collection and processing procedures, and water-quality data at Chicod Creek, North Carolina, 1992: U.S. Geological Survey Open-File Report 94-50, 35 p. Available Online
Manning, M.A., 1997, Measurement of streamflow in the lower Yazoo River using an acoustic Doppler current profiler, January-August, 1996: Proceedings of the 27th Mississippi Water Resources Conference, March 25-26,1997 Jackson, MS, p. 213-221.
Majewski, M.S., 1997, Error evaluation of methyl bromide aerodynamic flux measurements, Chapter 12: in Seiber, J.N., and others, eds, Fumigants--environmental fate, exposure, and analysis: ACS Symposium Series, vol. 652, p. 135-153.
Mahler, B.J., Van Metre, P.C., Wilson, J.T., Guilfoyle, A.L., and Sunvison, M.W., 2006, Concentrations, loads, and yields of particle-associated contaminants in urban creeks, Austin, Texas, 1999-2004: U.S. Geological Survey Scientific Investigations Report 2006-5262, 107 p. Available Online
Mahler, B.J., and Van Metre, P.C., , 2003, A simplified approach for monitoring hydrophobic organic contaminants associated with suspended sediment - methodology and applications: Archives of Environmental Contamination and Toxicology, vol. 44, no. 3, p. 288-297. doi: 10.1007/s00244-002-2032-3 Available Online
Madsen, James F., Sandstrom, Mark W., and Zaugg, Steven D., 2002, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory; a method supplement for the determination of Fipronil and degradates in water by gas chromatography/mass spectrometry: U.S. Geological Survey Open-File Report 2002-462, 11 p. Available Online
Lydy, M.J., Crawford, C.G., and Frey, J.W., 2000, A comparison of selected diversity, similarity, and biotic indices for detecting changes in benthic invertebrate community structure and stream quality: Archives of Environmental Contamination and Toxicology, vol. 39, no. 4, p. 469-479. doi: 10.1007/s002440010129 Available Online
Lydy, M.J., Carter, D.S., and Crawford, C.G., 1996, Comparison of gas chromatography/mass spectrometry and immunoassay techniques on concentrations of atrazine in storm runoff: Archives of Environmental Contamination and Toxicology, vol. 31, no. 3, p. 378-385. doi: 10.1007/BF00212676 Available Online
Lutz, Michelle A., Brigham, Mark E., and Marvin-DiPasquale, Mark, 2008, Procedures for Collecting and Processing Streambed Sediment and Pore Water for Analysis of Mercury as Part of the National Water-Quality Assessment Program: U.S. Geological Survey Open-File Report 2008-1279, 69 p. Available Online
Love, Jason T., Delzer, Gregory C., Abney, Sonja R., and Zogorski, John S., 1999, Study design and analytical results used to evaluate stability of volatile organic compounds in water matrices: U.S. Geological Survey Open-File Report 98-637, 156 p. Available Online
Lorenz, D.L., Goldstein, R.M., Cowdery, T.K., and Stoner, J.D., 2003, Comparison of two methods for delineating land use near monitoring wells used for assessing quality of shallow ground water: U.S. Geological Survey Water-Resources Investigations Report 03-4067, 13 p. Available Online
Lewis, M.E. and Brigham, M.E., 2004, National Field Manual for the Collection of Water-Quality Data, Chapter A5 Section 5.6.4 --Low-level Mercury: U.S. Geological Survey Techniques of Water-Resources Investigations, Book 9, 26 p. Available Online
Lenz, Bernard N., and Miller, Michael A., 1996, Comparison of aquatic macroinvertebrate samples collected using different field methods: U.S. Geological Survey Fact Sheet 216-96, 4 p. Available Online
Lenz, Bernard N., 1997, Feasibility of combining two aquatic benthic macroinvertebrate community data bases for water-quality assessment: U.S. Geological Survey Fact Sheet FS-132-97, 4 p. Available Online
Lapham, Wayne W., Wilde, Franceska D., and Koterba, Michael T., 1995, Ground- water data-collection protocols and procedures for the National water-quality Assessment Program: Selection, installation, and documentation of wells, and collection of related data: U.S. Geological Survey Open-File Report 95-398, 69 p. Available Online
Landon, M.K., Eberts, S.M., Jurgens, B.C., Katz, B.G., Burow, K.R., Crandall, C.A., Brown, C.J., and Starn J.J., 2006, Knowledge of where and how contamination-susceptible water enters public-supply wells can be used to improve monitoring strategies and protection plans: Ground Water Protection Council Annual Forum 2006, Sept.30-Oct.4, 2006, Miami Beach, FL., 15 p. Available Online
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