References Cited

Bernasconi, S.M., Barbieri, A., and Simona, M., 1997, Carbon and nitrogen isotope variations in sedimenting organic matter in Lake Lugano: Limnology and Oceanography, v. 42, no. 8, p. 1955–1765.

Edwards, T.K., and Glysson, G.D., 1999, Field methods for measurement of fluvial sediment: U.S. Geological Survey Techniques of Water-Resources Investigations, book 3, chap. C2, 89 p.

Finlay, J.C., and Kendall, C., 2007, Stable isotope tracing of temporal and spatial variability in organic matter sources to freshwater ecosystems, in Michener, R.H., and Lajtha, K., eds., Stable Isotopes in Ecology and Environmental Science (2d ed.): Hoboken, N.J., Wiley-Blackwell, p. 283–333.

Helsel, D.R., and Hirsch, R.M., 1992, Statistical methods in water resources: Amsterdam, Elsevier Science Publishers, 522 p.

Homer, C., Dewitz, J., Fry, J., Coan, M., Hossain, N., Larson, C., Herold, N., McKerrow, A., VanDriel, J.N., and Wickham, J., 2007, Completion of the 2001 National Land Cover Database for the conterminous United States: Photogrammetric Engineering and Remote Sensing, v. 73, no. 4, p. 337–341.

Kendall, C., Silva, S.R., and Kelly, V.J., 2001, Carbon and nitrogen isotopic compositions of particulate organic matter in four large river systems across the United States: Hydrological Processes, v. 15, no. 7, 1301–1346. (Also available at http://dx.doi.org/10.1002/hyp.216.)

Middelburg, J.J., and Nieuwenhuize, J., 1998, Carbon and nitrogen stable isotopes in suspended matter and sediments from the Schelde Estuary: Marine Chemistry, v. 60, 
p. 217–225.

Miller, J.C., and Miller, J.N., 1988, Statistics for analytical chemistry (2d ed.): New York, John Wiley and Sons, 227 p.

Oregon Department of Environmental Quality, 2001, Tualatin subbasin Total Maximum Daily Load (TMDL): Portland, Oregon, Oregon Department of Environmental Quality, 165 p., accessed October 8, 2009, at http://www.deq.state.or.us/wq/TMDLs/docs/willamettebasin/tualatin/tmdlwqmp.pdf.

Rounds, S.A., and Doyle, M.C., 1997, Sediment oxygen demand in the Tualatin River Basin, Oregon, 1992-1996: U.S. Geological Survey Water-Resources Investigations Report 97-4103, 19 p.

Rounds, S.A., Wood, T.M., and Lynch, D.D., 1999, Modeling discharge, temperature, and water quality in the Tualatin River, Oregon: U.S. Geological Survey Water-Supply Paper 2465-B, 121 p.

SAS Institute Inc., 1989, SAS/STAT^® version 6.07.01, Cary, N.C.

Tualatin River Flow Management Technical Committee, 2000, Annual data report for 1999: Clean Water Services and Oregon Water Resources Department, accessed October 9, 2009, at http://www.co.washington.or.us/Watermaster/SurfaceWater/upload/FlowReport-1999.pdf.

U.S. Census Bureau, 2000, State and County QuickFacts: U.S. Census Bureau website, accessed October 6, 2009, at http://quickfacts.census.gov/qfd/states/41/41067.html.

First posted August 17, 2010