Export flow distribution and restoration potential of streams along an urban-rural gradient Public Deposited

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Last Modified
  • March 20, 2019
Creator
  • Shields, Catherine A.
    • Affiliation: College of Arts and Sciences, Department of Geography
Abstract
  • An investigation of nitrogen export and the potential of restoration as a tool for water quality management in catchments along an urban-rural gradient. Quantity of N exported and flow conditions dominating N export are investigated. These variables are of interest as stream restorations typically aim to increase retention under low-moderate flow. We present a metric characterizing export flow distribution, F75, and develop regressions relating F75 to development. We extrapolate F75 across a stream network to identify areas where export flow distribution is most favorable for restoration. We then examine potential to increase N retention via restoration. We develop post-restoration N export estimates for a range of uptake velocities (vf ). Results show drainage area is a dominant explanatory variable for reduction; F75 may be an important factor within drainage area. Reductions at vf comparable to other restorations were low, suggesting limited potential for water quality improvement.
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  • In Copyright
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  • Band, Lawrence
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  • Open access
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