STORMWATER-GIS A GIS planning tool for stormwater best management practices
VBB VIAK has developed a useful planning tool for stormwater management. It is presented in a GIS format with links to spreadsheet models in Excel and/or databases in Access. RunofFwater flows and pollutant loads are calculated in the watershed management model Stormtac. Data from Stormtac, together wkh exisung measurements and sampling data, are exported into the databases. The GIS tool has been successfully implemented in the municipalities of Tyresö and Botkyrka in Sweden. It gives in a user-friendly way answers to e.g. the following questions:
• How high are the pollutant concentrations in the discharge points?
• What pollutani loads can be expected to the receiving waters?
• Where are siormwater ireatment facilkies to be considered?
Författare THOMAS LARM and ANNA HOLMGREN
Nyckelord stormwater, GIS, material transport, watershed, land use, treatment, planning, nutrients, metals