National Water-Quality Assessment (NAWQA) Project
More Information about Methods
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Foreman, W.T., Zaugg, S.D., Faires, L.M., Wener, M.G., Lilker, T.J., and Rogerson, P.F., 1992, Analytical interferences of mercuric chloride preservative in environmental water samples: Determination of organic compounds isolated by continuous liquid--Liquid extraction or closed-loop stripping: Environmental Science Technology, vol. 26, no. 7, p. 1307-1312. doi: 10.1021/es00031a004 Available Online
Foster, G.D., and Rogerson, P.F., 1990, Enhanced preconcentration of pesticides from water using the goulden large-sample extractor: International Journal of Environmental Analytical Chemistry, vol. 41, p. 105-117.
Fox, Garey A., Thelin, Gail P., Sabbagh, John W., and Kelly, Iain D., 2008, Estimating watershed level nonagricultural pesticide use from golf courses using geospatial methods: Journal of the American Water Resources Association, vol. 44, no. 6, p. 1363-1372. doi: 10.1111/j.1752-1688.2008.00229.x Available Online
Francy, Donna S., Myers, Donna N., and Helsel, Dennis R., 2000, Microbiological monitoring for U.S. Geological Survey National Water-Quality Assessment Program: U.S. Geological Survey Water-Resources Investigations Report 00-4018, 34 p. Available Online
Frey, J.W., Baker, N.T., Lydy, M.J., and Stone, W.W., 1996, Assessment of water quality at selected sites in the White River Basin, Indiana, 1993 and 1995 using biological indices: U.S. Geological Survey Fact Sheet FS-209-96, 4 p. Available Online
Gilliom, Robert J., and Thelin, Gail P., 1997, Classification and mapping of agricultural land for national water-quality assessment: U.S. Geological Survey Circular 1131, 70 p. Available Online
Gilliom, Robert J., Mueller, David K., and Nowell, Lisa H., 1998, Methods for comparing water-quality conditions among National Water-Quality Assessment Study Units, 1992-1995: U.S. Geological Survey Open-File Report 97-589, 54 p. Available Online
Ging, Patricia B., 1999, Water-quality assessment of South-Central-Texas: Comparison of water quality in surface-water samples collected manually and by automated samplers: U.S. Geological Survey Fact Sheet FS-172-99, 6 p. Available Online
Goodbred, S.L., Bryant, W.L, Rosen, M.R., Alvarez, David, and Spencer, Terri, 2009, How useful are the 'other' semipermeable membrane devices (SPMDs); the mini-unit (15.2 cm long)?: Science of the Total Environment, vol. 407, p. 4149-4156. doi: 10.1016/j.scitotenv.2009.02.037 Available Online
Gross, E.L., Lindsey, B.D., and Rupert, M.G., 2012, Quality of major ion and total dissolved solids data from groundwater sampled by the National Water-Quality Assessent Program, 1992-2010: U.S. Geological Survey Scientific Investigations Report 2011-5153, 26 p. Available Online
Gurdak, Jason J., Walvoord, Michelle A., and McMahon, Peter B., 2008, Susceptibility to enhanced chemical migration from depression-focused preferential flow, High Plains aquifer: Vadose Zone Journal, vol. 7, no. 4, p. 1172-1184. doi: 10.2136/vzj2007.0145 Available Online
Gurtz, Martin E., and Muir, Thomas A., 1994, Report on the interagency biological methods workshop: U.S. Geological Survey Open-File Report 94-490, 85 p. Available Online
Halde, Michael J., Delzer, Gregory C., and Zogorski, John S., 1999, Study design and analytical results used to evaluate a surface-water point sampler for volatile organic compounds: U.S. Geological Survey Open-File Report 98-651, 31 p. Available Online
Hamilton, P.A., Welch, A.H., Christenson, S.C., and Alley W.M., 1993, Uses and limitations of existing ground-water-quality data in Alley, W.M., ed.: Regional Ground-Water Quality: New York, Van Nostrand Reinhold, p. 613-622.
Hardy, M.A., Leahy, P.P., and Alley, W.M., 1989, Well installation and documentation, and ground-water sampling protocols for the pilot National Water-Quality Assessment Program: U.S. Geological Survey Open-File Report 89-396, 36 p. Available Online
Harte, Philip T., Robinson, Jr., Gilpin R., Ayotte, Joseph D., and Flanagan, Sarah M., 2008, Framework for evaluating water quality of the New England Crystalline Rock Aquifers: U.S. Geological Survey Open-File Report 2008-1282, 51 p. Available Online
Hatzell, Hilda H., Oaksford, Edward T., and Ashbury, Clyde E., 1995, Sampling design and procedures for fixed surface-water sites in the Georgia-Florida Coastal Plain Study Unit, 1993: U.S. Geological Survey Open-File Report 95-279, 16 p. Available Online
Hirsch, Robert M., Hamilton, Pixie A., Miller, Timothy L., and Myers, Donna N., 2008, Water availability - the connection between water use and quality: U.S. Geological Survey Fact Sheet FS 2008-3015, 4 p. Available Online
Hitt, Kerie J., 1994, Refining 1970's land-use data with 1990 population data to indicate new residential development: U.S. Geological Survey Water-Resources Investigations Report 94-4250, 15 p. Available Online
Hopkins, Evelyn H., 2003, Using a geographic information system to rank urban intensity of small watersheds for the Chattahoochee, Flint, Ocmulgee, and Oconee River basins in the piedmont ecoregion of Georgia and Alabama: in Hatcher, K.J., ed., Proceedings of the 2003 Georgia Water Resources Conference, April 23-24, University of Georgia, Athens, Georgia, 3 p. Available Online
Hopkins, Evelyn H., and Hippe, Daniel J., 1999, Can land-use patterns serve as a predictor of pesticide occurrence within an urban landscape?: in Hatcher, K.J., ed., U.S. Geological Survey reprints from proceedings of the 1999 Georgia Water Resources Conference, March 30-31, 1999 The University of Georgia, Athens, Georgia, p. 180-185.
Huh, S., Dickey, D.A., Meador, M.R., and Ruhl, K.E., 2005, Temporal analysis of the frequency and duration of low and high streamflow: years of record needed to characterize streamflow variability: Journal of Hydrology, vol. 310, p. 78-94. doi: 10.1016/j.jhydrol.2004.12.008 Available Online
Johnson, M.R., and Zelt, R.B., 2005, Protocols for Mapping and Characterizing Land Use/Land Cover in Riparian Zones: U.S. Geological Survey Open-File Report 2005-1302, on-line only, 16 p. Available Online
Johnson, Steven M., and Swanson, Robert B., 1994, Operational procedures for collecting water-quality samples at monitoring sites on Maple Creek near Nickerson and the Platte River at Louisville, Eastern Nebraska: U.S. Geological Survey Open-File Report 94-121, 24 p. Available Online
Jones, Joseph L., and Roberts, Lonna M., 1999, The relative merits of monitoring and domestic wells for ground water quality investigations: Ground Water Monitoring & Remediation, vol. 19, no. 3, p. 138-144. Available Online
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