Storm Water System
The storm sewer system refers to
The City's storm drain system includes over 75 miles of open channels/ditches, over 320 miles of public underground pipes, and over 18,000 structures representing over $200 million in storm drain infrastructure investment.
To protect residents and our local creeks the Storm Water Team monitors water quality to assess local creeks and focus on local pollutants of concern including elevated temperatures, sediment, and bacteria. Monitoring includes chemical and biological sampling during storm events and the low flow season. Chemical monitoring provides concentrations of constituents while biological tests show the response of actual living organisms to creek samples or conditions.
Review our NPDES Permit Annual Report (PDF) for sampling results.
Permits & Regulations
The work the City of Santa Rosa does to prevent
The Regional Board has been issuing a National Pollutant Discharge Elimination (NPDES) Storm
Water Permit (PDF) jointly to the City of Santa Rosa, County of Sonoma and the Sonoma County
Water Agency. The permit governs a variety of activities in the City of Santa Rosa such as
industrial and commercial businesses, new and redevelopment projects, construction sites, storm
drain operation and maintenance, creek monitoring, pesticide applications, and illegal dumping
of water and other pollution in the City's storm drain (for more information visit our pollution
prevention page). In early 2013, jurisdictions that had been designated as Phase II
municipalities within the Russian River Watershed were provided an option to align with the
Phase I program in an effort for watershed-wide consistency and collaboration. The City of
Cloverdale, the City of Cotati, the City of Rohnert Park, the City of Healdsburg, the City of
Sebastopol, the City of Ukiah, the Town of Windsor, and the Phase II designated portions of the
County of Sonoma elected to participate in the Phase I program as Co-Permittees.
The City enacted a stormwater ordinance (Ordinance No. 3272) on July 30,
Under the permit, Santa Rosa has a Storm Water Management Plan outlining proposed activities necessary to protect our creeks and rivers from polluted storm water runoff. The City also prepares an Annual Report (PDF) that evaluates progress during that fiscal year. Both documents are approved by the City Council prior to their submittal to the Regional Board.