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Stormwater - Wiley Online Library

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Last Updated: 05 December 2022

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Dispersed Urban‐Stormwater Control Improved Stream Water Quality in a Catchment‐Scale Experiment

In 6 locations on two rivers, we carried out a catchmentu2010scale experiment over 19 years to determine the effect of dispersed stormwater control techniques, which resulted in a decrease in effective imperviousness on stream water quality, as shown by a decrease in effective imperviousness on stream water quality. SCMs reduced phosphorus concentrations and summer temperature to recommended levels in dry weather where EI had been adequately reduced, but effects were less pronounced due to increased antecedent rain. In both locations, SCMs also reduced nitrogen levels, which were affected by septic tank seepage. According to the extent of water quality improvement among experimental sites, obtaining reference water quality would require SCMs with high retention capacity intercepting runoff from nearly all impervious surfaces, which would require more downslope space and water demand. EI is a useful metric for predicting stream water quality responses to SCMs, allowing greater capture priority and SCM design standards for stream protection.

Source link: https://onlinelibrary.wiley.com/doi/10.1029/2022WR032041

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions