Hydraulic performance of grass swales for managing highway runoff.

  title={Hydraulic performance of grass swales for managing highway runoff.},
  author={Allen P. Davis and James H Stagge and Eliea Jamil and Hunho Kim},
  journal={Water research},
  volume={46 20},
The hydraulic performance of grass swales as a highway stormwater control measure was evaluated in a field-scale study adjacent to a Maryland highway. Two common swale design alternatives, pretreatment grass filter strips and vegetated check dams, were compared during 52 storm events over 4.5 years. Swale performance is described via three regimes, dependent on the relative size of the rainfall event. Overall, half of the events were small enough that the entire flow was stored, infiltrated… CONTINUE READING

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