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    • A Survey of Ditches Along County Roads for Their Potential to Affect Storm Runoff Water Quality 

      Colwell, Shanti; Horner, Richard R.; Booth, Derek B.; Gilvydis, Dalius (University of Washington Center for Urban Water Resources Management, 2000-07)
      Twenty years of research have demonstrated that the water quality of stormwater runoff can improve after flowing in a well-vegetated channel, relatively slowly, at a depth below the vegetation height. These channels are ...