Streamflow Distribution of Non-Point Source Nitrogen Export from Urban-Rural Catchments in the Chesapeake Bay Watershed

Streamflow Distribution of Non-Point Source Nitrogen Export from Urban-Rural Catchments in the Chesapeake Bay Watershed

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Shields, C.A., Band, L.E., Law, N., Groffman, P.M., Kaushal, S.S., Savvas, K. 2008. Streamflow distribution of non-point source nitrogen export from urban-rural catchments in the Chesapeake Bay watershed. Water Resources Research. American Geophysical Union, Washington, D.C. Volume 44, Number 9.
baseflow, nutrients, rural, stormflow, stream, urban
Authors test the hypotheses that N export magnitude increases and cumulative N export shifts to higher, less frequent discharge with catchment urbanization. Results are used to develop a simple statistical model relating export distribution metrics to impervious surface area is then used to extrapolate parameters of the N export distribution across the Gwynns Falls watershed in Baltimore County. This spatial extrapolation has potential applications as a tool for predictive mapping of variations in export distribution and targeting stream channel restoration efforts at the watershed scale.

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