This report describes a research project, conducted by HR Wallingford Ltd in association with the Transport Research Laboratory (TRL) from 1992 to 1994. The study's objectives were to: (1) review the current situation and research needs concerning the use of surface water channels for road drainage; and (2) prepare recommendations on outlet design and general recommendations on the use of surface water channels. Two questionnaires were produced and several site visits were made, to achieve the first objective. General information was collated from 39 schemes that had already been built or were at various stages between design and construction. Information was collected about the geometrical characteristics of surface water channels, road type and gradient, and outfall type and size. The second questionnaire collected more detailed information. To achieve the second objective, an extensive study was conducted, involving field measurements of outlet performance in two existing road schemes and laboratory tests of several outlet designs. The site offered various channel geometries, outlet designs, and slopes under various flow conditions. Several conclusions and recommendations are presented about the design, construction, and use of surface water channels, and about further revisions required to existing advice.

  • Corporate Authors:

    HR Wallingford Limited

    Howbery Park
    Wallingford, Oxon  United Kingdom  OX10 8BA
  • Authors:
    • Escarameia, M
    • May, RWP
  • Publication Date: 1996


  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00730445
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Jan 30 1997 12:00AM