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<br />Apodaca, L.E., Driver, N.E., and Bails, 1.B., 2000, Occur-
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<br />Bauch, N.J. and Apodaca, L.E., 1995, Bibliography, indices,
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<br />tions, Upper Colorado River Basin-What's been done
<br />and how can the information be used?: U.S. Geological
<br />Survey Fact Sheet FS-032-97, 2 p.
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<br />and habitat on composition of fish communities in the
<br />Upper Colorado River Basin: U.S. Geological Survey
<br />Fact Sheet FS-122-97, 6 p.
<br />Deacon, l.R., Mize, S.Y., and Spahr, N.E., 1999, Character-
<br />ization of selected biological, chemical, and physical
<br />conditions at fixed sites in the Upper Colorado River
<br />Basin, Colorado, 1995-98: U.S. Geological Survey
<br />Water-Resources Investigations Report 99-4181, 35 p.
<br />Deacon, l.R., and Spahr, N.E., 1998, Water-quality and bio-
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<br />Deacon, 1.R., and Stephens, Y.c., 1996, Summary of biolog-
<br />ical and contaminant investigations related to stream
<br />water quality and environmental setting in the Upper
<br />Colorado River Basin, 1938-1995: U.S. Geological
<br />Survey Water-Resources Investigations Report 96-
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<br />Driver, N.E., 1994, National Water-Quality Assessment Pro-
<br />gram-Upper Colorado River Basin: U.S. Geological
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<br />Greve, A.I., Spahr, N.E., Van Metre, P.c., and Wilson, l.T.,
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<br />Spahr, N.E., and Boulger, R.w., 1997, Interim results of
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<br />Basin National Water-Quality Assessment Study Unit,
<br />October 1995-September 1998: U.S. Geological Sur-
<br />vey Water-Resources Investigations Report 99-4223,
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<br />Spahr, N.E., and Deacon, l.R., 1998, Water-quality charac-
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<br />recreational season, December, 1996: U.S. Geological
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<br />
<br />Spahr, N.E., Driver, N.E., and Stephens, Y.C., 1996, The
<br />Upper Colorado River National Water-Quality Assess-
<br />ment Program Surface-Water Monitoring Network:
<br />U.S. Geological Survey Fact Sheet FS-I9I-96, 4 p.
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<br />Spahr, N.E., and Wynn, K.H., 1997, Nitrogen and phospho-
<br />rus in surface waters of the Upper Colorado River
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<br />
<br />References 27
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