White River downtown outfalls adjacent to White River State Park

White River State Park borders the White River in downtown Indianapolis, where municipal storm drains and outfalls from streets and properties discharge urban runoff into the river. The White River and its downtown outfalls have been the focus of water-quality monitoring and municipal stormwater management efforts aimed at reducing pollutants carried by storm drains. Urban runoff from impervious downtown surfaces is a documented source of pollutants entering the White River via these storm drains.