Abstract
Enormous quantities of litter enter the stormwater system. It is most efficient to capture it at at its source through education, legislation, street vacuuming, and improved litter collection. We underook a literature review, field investigation, theoretical hydraulic analysis, physical and numerical modelling. At a particular boom location it is recommended that consideration be given to using angled booms and/or mesh skirts and/or deeper skirts where appropriate, with the best design for each site refined by physical and/or numerical modelling, balancing the need for litter retention, minimum forces on the boom, more permanent debris collection, navigability, performance over all water levels and minimum cost.