Cammermayer, Jon W.Horner, Richard R.Chechowitz, Naomi2011-12-302011-12-302000-12http://hdl.handle.net/1773/19548This study had three objectives and associated work components: Component 1 -- assess routine highway ditch cleaning alternatives ("Service Levels") for water quality benefits; Component 2—survey biofiltration swales to evaluate conditions promoting water quality benefits; and Component 3—assess restabilization and revegetation options for use after ditch cleaning and for restoring biofiltration swale vegetation.en-UShighwayshydraulic structureswater qualitybiofiltrationbioretention areasstormwaterstormwater managementroadside plantsWashingtonTechnical Report