V. Novotny, “Water Quality: Diffuse Pollution and Watershed Management,” John Wiley & Sons, Inc., New Jersey, 2003.
 S. J. Connolly, T. C. Cain, J. S. Vestal and P. J. Edwards, “The Potential Effects of Acid Deposition: What’s a National Forest to Do?” Proceedings of the Forest Service National Earth Sciences Conference, San Diego, 18-22 October 2004.
 P. A. Siver, “Distribution of Scaled Chrysophytes in 17 Adirondack (New York) Lakes with Special Reference to pH,” Canadian Journal of Botany, Vol. 66, No. 7, 1988, pp. 1391-1403. doi:10.1139/b88-195
 J. W. Deuller, “Hydrological Response to Acid Rain,” Monitoring to Detect Changes in Water Quality Series. Proceedings of Budapest Symposium, Hungary, 2-4 July 1986, pp. 175-184.
 C. N. Lane, “Acid Rain Overview and Abstracts,” Nova Science Publishers, Inc., New York, 2003.
 J. P. Michaud, “A Citizen’s Guide to Understanding and Monitoring Lakes and Streams,” Washington State Department of Ecology, Olympia, 1991.
 C. S. Carvalho and M. N. Fernandes, “Effect of Temperature on Copper Toxicity and Hematological Responses in the Neotropical Fish Prochilodus scrofa at Low and High pH,” Aquaculture, Vol. 251, No. 1, 2006, pp. 109-117.
 United State Geology Surveying, “Water Science for School,” 2012.
 United Nations Environment Program GEMS Water Program, “Water Quality Outlook,” 2011.
 Environmental Protection Agency (EPA), “Community Multi-Scale Air Quality (CMAQ) Model 4.6,” 2007.
 J. K. Upadhyay, S. Chandru, C. J. Lin and T. C. Ho, “Modeling of Long-Range Transport of the Airborne Pollutants on the Rio Grande Basin Watershed,” International Symposium on Air Quality and Waste Management for Agriculture, Broomfield, 16-19 September 2007.
 Big Bend National Park, 2013.
 D. W. Schindler, “Effects of Acid-Rain on Freshwater Ecosystems,” Science, Vol. 239, No. 4836, 1988, pp. 149-157. doi:10.1126/science.239.4836.149
 United States Geology Surveying, 2012.
 X. Fang, R. Shrestha, A. W. Groeger, C. J. Lin and M. Jao, “Simulations of Impact of Stream Flow and Climate Conditions,” Journal of Contemporary Water Research and Education, Vol. 137, No. 1, 2007, pp. 14-20.
 H. Passell, V. C. Tidwell, J. Brainard, M. Ennis, J. Aparicio, A. Guitron, R. Lovato, J. Valdes, A. Serrat-Capdevila, A. M. Michelsen, Z. Sheng, W. Morrison, T. Gerik, G. Piccinni, J. Villalobos, G. Newman, K. Pallachula and J. Emery, “Data Collection for Cooperative Water Resources Modeling in the Lower Rio Grande Basin: Fort Quitman to the Gulf of Mexico,” Research Report SAND 2004-5241, Sandia National Laboratories, New Mexico, 2004.
 C. L. Danner, D. C. McKinney, R. L. Teasley and S. Sandoval-Solis, “Documentation and Testing of the WEAP Model for the Rio Grande/Bravo Basin,” Center for Research in Water Resources, CWRW on Line Report 06-8, University of Texas at Austin, Texas, 2006.
 D. Langmuir, “Aqueous Environmental Geochemistry” Prentic-Hall, Inc., New Jersey, 1997.
 J. A. Lynch, V. C. Bowersox and J. W. Grimm, “Trends in Precipitation Chemistry in the United States, 1983-1994: An Analysis of the Effects in 1995 of Phase I of the Clean Air Act Amendments of 1990, Title IV,” Open-File Report 96-0346, US Geology Surveying.
 W. Viessman Jr. and G. L. Lewis, “Introduction to Hydrology,” 5th Edition, Pearson Education Inc., New York, 2003.
 US Army Corps of Engineers, “Forgotten Reach of the Rio Grande, Fort Quitman to Presidio,” Texas Section 729 Report, TCEQ, Albuquerque District, 2008.
 R. L. Teasley, “Modeling the Forgotten River Segment of the Rio Grande/Bravo Basin,” CRWR Online Report 05-12, 2005.
 United States Environmental Protection Agency, 2013.
 American Public Health Association, “Standard Methods for the Examination of Water and Wastewater,” 18th Edition, American Public Health Association, Washington DC, 1992.
 W. Stumm and J. J. Morgan, “Aquatic Chemistry: Chemical Equilibria and Rates in Natural Waters,” 3rd Edition, John Wiley & Sons, Inc., New York, 1996.
 E. Busenberg and L. N. Plummer, “A Comparative Study of the Dissolution and Crystal Growth Kinetics of Calcite and Aragonite,” In: F. A. Mumpton, Ed., Studies in Diagenesis, USGS, Vol. 1578, 1986, pp. 139-168.
 F. W. Lipfert, “Air Pollution and Materials Damage,” In: O. Hutzinger, Ed., The Handbook of Environmental Chemistry, Springer-Verlag, Berlin, 1989, pp. 114-186.
 W. F. Langlier, “The Analytical Control of Anti-Corrosion Water Treatment,” Journal of the American Water Works Association, Vol. 28, 1936, pp. 1500-1521.
 J. F. Dye and J. L. Tuepker, “Chemistry of the Lime-Soda Process,” In: Water Quality and Treatment: A Handbook of Public Water Supplies, 3rd Edition, American Water Works Association, McGraw-Hill, Toronto, 1971.
 R. D. Letterman, “Water Quality and Treatment,” 5th Edition, Mcgraw-Hill, Inc., Toronto, 1999.
 O. Levenspiel, “Chemical Reaction Engineering,” 3rd Edition, John Wiley & Sons, Inc., New York, 1999.