Sensitivity Analysis of Annual Nitrate Loads and the Corresponding Trends in the Lower Illinois River
Publication: Journal of Hydrologic Engineering
Volume 19, Issue 3
Abstract
Riverine nutrient concentrations and loads in the Midwestern United States have been identified as a major source of nutrients for the Mississippi River, causing hypoxia in the Gulf of Mexico. The Illinois River is one of the major contributors of nutrients to the Mississippi River, draining more than 40% of Illinois and parts of Indiana and Wisconsin. The main goals of this study were to calculate annual average nitrate concentration and annual total loads in the Lower Illinois River and its tributaries for 1975–2010, and to determine how the selection of different approaches affects the calculated trends. The Illinois Environmental Protection Agency (IEPA) has been collecting surface water quality data in Illinois since the early 1970s. This study used nitrite-N+nitrate-N () samples provided by IEPA and collected from the Illinois River at Havana and Valley City, Sangamon River at Oakford, and La Moine River at Ripley for the period 1975 to 2010. Discharge data concurrent with routine water quality samples were applied to a suite of approaches to estimate daily concentration and load for the period of analysis, including the seven-parameter regression equation along with several modeling residual adjustment techniques and the weighted regression on time, discharge, and season (WRTDS) method. The calculated annual mean concentration and annual total loads for for the period of record were discussed in relation to different approaches.
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Acknowledgments
This research was partially supported by the EPA/Illinois Indiana Sea Grant (Grant EPA GL-00E00683-0). In addition, this research was a part of the Illinois River Conservation Reserve Enhancement Program (CREP) funded by the Illinois Department of Natural Resources. Debbie Bruce and Rich Mollahan served as project managers. Dr. Robert Hirsch (USGS) kindly provided the authors with the WRTDS software and manual. The authors would like to thank Dr. Greg McIsaac (University of Illinois) for very useful comments and suggestions. The authors also would like to acknowledge the contribution of the Illinois Water Survey staff: Yanqing Lian for providing hydrologic data, Lisa Sheppard for editing, and Sara Olson for preparation of figures.
References
Aulenbach, B. T., Buxton, H. T., Battaglin, W. A., and Coupe, R. H. (2007). “Streamflow and nutrient fluxes of the Mississippi-Atchafalaya River Basin and sub-basins for the period of record through 2005.”, USGS, Reston,VA.
Aulenbach, B. T., and Hooper, R. P. (2006). “The composite method: An improved method for stream-water solute load estimation.” Hydrol. Process., 20(14), 3029–3047.
Cohn, T. A. (1995). “Recent advances in statistical methods for the estimation of sediment and nutrient transport in rivers.” Rev. Geophys. Supp., 1117–1123.
Cohn, T. A., Caulder, D. L., Gilroy, E. J., Zynjuk, L. D., and Summers, R. M. (1992). “The validity of a simple statistical model for estimating fluvial constituent loads: An empirical study involving nutrient loads entering Chesapeake Bay.” Water Resour. Res., 28(9), 2353–2363.
Cohn, T. A., DeLong, L. L., Gilroy, E. J., Hirsch, R. M., and Wells, D. K. (1989). “Estimating constituent loads.” Water Resour. Res., 25(5), 937–942.
Crowder, D. W., Demissie, M., and Markus, M. (2007). “The accuracy of sediment loads when log-transformation produces nonlinear sediment load-discharge relationships.” J. Hydrol., 336(3–4), 250–268.
Dolan, D. M., Yui, A. K., and Geist, R. D. (1981). “Evaluation of river load estimation methods for total phosphorus.” J. Great Lakes Res., 7(3), 207–214.
EPA Science Advisory Board. (2008). “Hypoxia in the Northern Gulf of Mexico: An update by the EPA Science Advisory Board.”, EPA Science Advisory Board, Washington DC.
Ferguson, R. I. (1987). “Accuracy and precision of methods for estimating river loads.” Earth Surf. Processes Landforms, 12(1), 95–104.
Guo, Y., Markus, M., and Demissie, M. (2002). “Uncertainty of nitrate-N load computation for agricultural watersheds.” Water Resour. Res., 38(10), 3-1–3-12.
Helsel, D. R., and Hirsh, R. M. (1995). Statistical methods in water resources, Elsevier, New York.
Hirsch, R. M., Moyer, D. L., and Archfield, S. A. (2010). “Weighted regressions on time, discharge, and season (WRTDS), with an application to Chesapeake Bay river inputs.” J. Amer. Water Resour. Assoc., 46(5), 857–880.
Illinois Environmental Protection Agency. (2007). “Illinois water monitoring strategy 2007–2012.” Illinois EPA, Bureau of Water, Springfield, IL, 〈http://www.epa.state.il.us/water/water-quality/monitoring-strategy/2007-2012/monitoring-strategy-2007-2012.pdf〉 (Nov. 23, 2013).
Keefer, L., Bauer, E., and Markus, M. (2010). “Hydrologic and nutrient monitoring of the Lake Decatur watershed: Final report 1993–2008, 2010.”, Illinois State Water Survey, Champaign, IL.
Kendall, M. G. (1955). Rank correlation methods, Hafner, New York.
Lian, Y., Chan, I. C., Xie, H., and Demissie, M. (2010). “Improving HSPF modeling accuracy from FTABLES: Case study for the Illinois River basin.” J. Hydrol. Eng., 642–650.
Lucey, K. J., and Goolsby, D. A. (1993). “Effects of climatic variations over 11 years on nitrate-nitrogen concentrations in the Raccoon River, Iowa.” J. Environ. Qual., 22(1), 38–46.
McIsaac, G. F., and Libra, R. D. (2003). “Revisiting nitrate concentrations in the Des Moines River 1945 and 1976–2001.” J. Environ. Qual., 32(6), 2280–2289.
Neumann, D. W., Rajagopalan, B., and Zagona, E. A. (2003). “Regression model for daily maximum stream temperature.” J. Environ. Eng., 667–674.
Panno, S. V., Kelly, W. R., Hackley, K. C., Hwang, H-H., Martinsek, A. T. (2008). “Sources and fate of nitrate in the Illinois River Basin, Illinois.” J. Hydrol., 359(1–2), 174–188.
Preston, S., Bierman, V. J., and Silliman, S. E. (1989). “An evaluation of methods for the estimation of tributary mass loads.” Water Resour. Res., 25(6), 1379–1389.
Robertson, D. M., and Roerish, E. D. (1999). “Influence of various water quality sampling strategies on load estimates for small streams.” Water Resour. Res., 35(12), 3747–3759.
Schilling, K. E., and Spooner, J. (2006). “Effects of watershed-scale land use change on stream nitrate concentrations.” J. Environ. Qual., 35(6), 2132–2145.
Şen, Zekâi. (2012). “An innovative trend analysis methodology.” J. Hydrol. Eng., 1042–1046.
Short, M. B. (1999). “Baseline loadings of nitrogen, phosphorus, and sediments from Illinois watersheds.”, Illinois Environmental Protection Agency, Springfield, IL.
Sprague, L. A., Hirsch, R. M., and Aulenbach, B. T. (2011). “Nitrate in the Mississippi River and its tributaries, 1980 to 2008: Are we making progress?” Environ. Sci. Technol., 45(17), 7209–7216.
Terrio, P. J. (2006). “Concentrations, fluxes and yields of nitrogen, phosphorus and suspended sediment in the Illinois River Basin, 1996–2000.”.
Turner, R. E., Rabalais, N. N., and Justic, D. (2006). “Predicting summer hypoxia in the northern Gulf of Mexico: Riverine N, P, and Si loading.” Mar. Pollut. Bull., 52(2), 139–148.
Verhoff, F. H., Yaksich, S. M., and Melfi, D. A. (1980). “River nutrient and chemical transport estimation.” J. Environ. Eng., 106(3), 591–608.
Verma, S., Markus, M., and Cooke, R. A. (2012). “Development of error correction techniques for nitrate-N load estimation.” J. Hydrol., 432, 12–25.
Walker, W. W. (1996). “Simplified procedures for eutrophication assessment and prediction: User manual.”, U.S. Army Corps of Engineers, Vicksburg, MS.
Walker, W. W. (2003). “Consideration of variability and uncertainty in phosphorus total maximum daily loads for lakes.” J. Water Resour. Plann. Manage., 337–344.
Wallin, T. R., and Schaeffer, D. J. (1979). “Illinois redesigns its ambient water quality monitoring network.” Environ. Manage., 3(4), 313–319.
Water Science, and Technology Board (WSTB). (2009). Nutrient control actions for improving water quality in the Mississippi River Basin and Northern Gulf of Mexico, National Research Council of the National Academies, National Academies Press, Washington, DC.
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© 2014 American Society of Civil Engineers.
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Received: Aug 16, 2012
Accepted: Apr 12, 2013
Published online: Apr 13, 2013
Discussion open until: Sep 13, 2013
Published in print: Mar 1, 2014
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