As a part of the Interreg Baltic Sea Region project “EMMA”, M4Traffic has been given the task to investigate certain goods flows in the Mälaren Valley to find whether it is possible to use Inland Waterway (IWW) as a part of the transport chain. In collaboration with the Swedish Transport Administration, three such flows were identified; • Return-packaging - Paper, glass, newspaper, metal and plastic - Aluminium cans and PET-bottle • Household waste • Sand and gravel as well as snow cleared from the streets during winter. After consideration it was decided that this report will be focusing on return packaging, more specifically general household packages and newspapers (FTIAB) and aluminium cans and plastic bottles (Returpack). In addition, a short survey of existing academic literature was conducted to give some supplementary context, as well as a brief cost benefit analysis in order to compare costs related to different transport systems.