Articles | Volume 25, issue 5
https://doi.org/10.5194/hess-25-2789-2021
https://doi.org/10.5194/hess-25-2789-2021
Research article
 | 
26 May 2021
Research article |  | 26 May 2021

Assessing interannual variability in nitrogen sourcing and retention through hybrid Bayesian watershed modeling

Jonathan W. Miller, Kimia Karimi, Arumugam Sankarasubramanian, and Daniel R. Obenour

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Cited articles

Bales, J., Weaver, J. C., and Robinson, J. B.: Relation of Land Use to Streamflow and Water Quality at Selected Sites in the City of Charlotte and Mecklenburg County, North Carolina, 1993–98 (Vol. 99, No. 4180), USDI, US Geol. Surv., Raleigh, NC, https://doi.org/10.3133/wri994180, 1999. 
Bernhardt, E. S. and Palmer M.A.: Restoring streams in an urbanizing world, Freshwater Biol., 52, 738-751, https://doi.org/10.1111/j.1365-2427.2006.01718.x, 2007. 
Beven, K.: A manifesto for the equifinality thesis, J. Hydrol., 320, 18–36, https://doi.org/10.1016/j.jhydrol.2005.07.007, 2006. 
Burns, D., Vitvar, T., McDonnell, J., Hassett, J., Duncan, J., and Kendall, C.: Effects of suburban development on runoff generation in the Croton River basin, New York, USA, J. Hydrol., 311, 266–281, https://doi.org/10.1016/j.jhydrol.2005.01.022, 2005. 
Chanat, J. G., Moyer, D. L., Blomquist, J. D., Hyer, K. E., and Langland, M. J.: Application of a weighted regression model for reporting nutrient and sediment concentrations, fluxes, and trends in concentration and flux for the Chesapeake Bay Nontidal Water-Quality Monitoring Network, results through water year 2012 (No. 2015-5133), USGS, Reston, VA, https://doi.org/10.3133/sir20155133, 2012. 
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Short summary
Within a watershed, nutrient export can vary greatly over time and space. In this study, we develop a model to leverage over 30 years of streamflow, precipitation, and nutrient sampling data to characterize nitrogen export from various livestock and land use types across a range of precipitation conditions. Modeling results reveal that urban lands developed before 1980 have remarkably high levels of nitrogen export, while agricultural export is most responsive to precipitation.
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