Highways Agency Report

             Shelfmark: HA Room 114-117, Heron House, Bedford.  Water Quality
                        A7
       Personal author: Butler D
                 Title: Dynamic modelling of roadside gully pots during wet
                        weather
             Publisher: Pergamon, 1998
  Physical description: 9 leaves, charts
                 Price: Unpriced
                Series: SSR Water Library; Water Quality A7
       Notes - general: Abstract: Roadside gully pots form a common and
                        important part of many surface water drainage
                        networks.  Their prime function is to retain
                        largesolids from road runfoo in order to minimise the
                        problems associated with sediment deposition in
                        downstream drainage structures and recieving waters.
                        Typical processes occuring in pots during wet weather
                        are dilution, dispersion, sedimentation, sediment bed
                        build-up and erosion.  Washout of suspended and
                        dissolved pollutants from the pot liquor and reaertion
                        of the pot liquor.  A dynamic water quality model has
                        been developed to simulate these processes.  To study
                        the pollutant washout patterns and sludge bed erosion.
                        Simulated wet weather tests were carried out on pots
                        draining six different types of roads.  Results
                        corroborated earlier findings and were used to
                        successfully calibrate and verify the model.
               Keyword: Water quality
               Keyword: Road Runoff
 SSR WATER LIBRARY MATERIAL
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