Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Long-Term Performance Modeling of Vegetative/Infiltration BMPs for Highways
Nonpoint source pollution from highway stormwater runoff is a growing water quality concern and highway drainage systems are being re-evaluated for how well they can passively treat stormwater runoff. Vegetated buffer strips along fill slopes in the highway cross section can mitigate pollutants in stormwater runoff by infiltration and sedimentation. The existing models for vegetated buffer strips range from simple percent removal estimates to models with very complex routing and sediment transport algorithms for a single design storm. Instead of a design storm approach, the model proposed in this paper uses long-term precipitation data and a simple modeling framework to estimate concentration reduction and volume reduction through a vegetated buffer strip on an average annual basis. Data from field studies are used to support the spreadsheet-based model framework. In order to function effectively for passive stormwater treatment, buffer strips need an adequate vegetative cover. The model results clearly show the benefits of open drainage (vegetated swales) over closed drainage (curb and gutter systems).
Long-Term Performance Modeling of Vegetative/Infiltration BMPs for Highways
Nonpoint source pollution from highway stormwater runoff is a growing water quality concern and highway drainage systems are being re-evaluated for how well they can passively treat stormwater runoff. Vegetated buffer strips along fill slopes in the highway cross section can mitigate pollutants in stormwater runoff by infiltration and sedimentation. The existing models for vegetated buffer strips range from simple percent removal estimates to models with very complex routing and sediment transport algorithms for a single design storm. Instead of a design storm approach, the model proposed in this paper uses long-term precipitation data and a simple modeling framework to estimate concentration reduction and volume reduction through a vegetated buffer strip on an average annual basis. Data from field studies are used to support the spreadsheet-based model framework. In order to function effectively for passive stormwater treatment, buffer strips need an adequate vegetative cover. The model results clearly show the benefits of open drainage (vegetated swales) over closed drainage (curb and gutter systems).
Long-Term Performance Modeling of Vegetative/Infiltration BMPs for Highways
Pack, Chelisa A. (Autor:in) / Heaney, James P. (Autor:in) / Lee, Joong Gwang (Autor:in)
World Water and Environmental Resources Congress 2005 ; 2005 ; Anchorage, Alaska, United States
01.07.2005
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Hydraulics , Hydrology , Wastewater management , Highway and road management , International factors , Water distribution systems , Groundwater management , Wetlands , Infiltration , Runoff , Water resources , Water management , Water supply , Best Management Practice , Watersheds , Stormwater management , Vegetation , Irrigation , Climate change
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