Storm Drain Mapping and Marking

A 2003 project for the Pennichuck Watershed involved mapping storm drains, flow direction and outfalls on public lands within the watershed. By marking storm drains with buttons that read, “Let Only Rain Go Down the Storm Drain – Drains to Water Supply,” Pennichuck Water Works increased residents’ and businesses’ awareness of the direct connection between storm drains, waterways, and drinking water.