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Administrative Office/Mailing Address:

404 Aviation Boulevard, Santa Rosa, CA 95403
Office Hours: 8:00 AM - 5:00 PM Monday - Friday
Directions (Google Maps) | Directions (PDF)

Operations and Maintenance Center

204 Concourse Blvd, Santa Rosa, CA 95403
Directions (Google Maps)

Phone Numbers

Administrative Office:

Front Desk: 707-526-5370
Operations Desk (24 Hours): 707-523-1070
Fax: 707-544-6123 or 707-524-3782

Media/Press Office:

Phone: 707-547-1927 or 707-322-8192

Emergency Phone Numbers:

Sewage Emergency Hotline:  707-523-1070

The Sewage Emergency Hotline is operated on a 24-hour basis at the Sonoma County Water Agency's Operations Center. Call this hotline to report any sewage spills, overflows or backed-up sewer lines.

Flood Forecast Hotline:  707-526-4768

The Flood Forecast is a recording that provides updates on local river conditions. The recordings are updated by the Sonoma County Water Agency as conditions change.

Stream Maintenance:  707-521-1845

Report any stream related issues, such as debris or stream channel changes, to prevent localized flooding. Learn more about the Stream Maintenance Program.

Other Emergency Phone Numbers

  • Sonoma County Department of Emergency Services Hotline: 707-565-3856
  • Transportation and Public Works Road Closure hotline: 707-565-2237 or visit the Public Works web site for County road closures.


Water Suppliers: Cities and Water Districts

For more information about water resource management and water conservation programs in Sonoma and Marin counties, contact your local water supplier:

City of Santa Rosa
(707) 543-3985

Town of Windsor
(707) 838-1004

Marin Municipal Water District
(415) 945-1520

City of Cotati
(707) 523-1010

City of Sonoma
(707) 933-2247

City of Rohnert Park
(707) 585-6750

Valley of the Moon Water District
(707) 996-1037

City of Petaluma
(707) 778-4507

North Marin Water District
(415) 897-4133



Contact Us Form

Fill out the below form to send us your questions or comments. We will make sure they get to the appropriate member of our staff for a response.