Since 1997, the Public Works Department has administered the stormwater program. Among other MS4 permit requirements, such as developing a drainage control program, Boise City is required to provide stormwater education and outreach to residents within Boise city limits.
Boise City Jurisdiction
Responsibility for control of stormwater runoff within the City of Boise is distributed among several agencies. Street drainage and street drains are the responsibility of the Ada County Highway District (ACHD). Drainage from commercial areas is regulated by the city.
Boise City is responsible for operation and maintenance of drainage conveyance systems for stream flows from the four main gulches in the Boise Foothills: Cottonwood Creek, Hulls Gulch, Crane Creek and Sand Creek.
Many areas of the city use flood irrigation. In those cases, responsibility for drainage lies with one of several irrigation or drainage districts or local water users associations within the city limits.