Flood Preparedness & Storm Readiness

San Francisco winter storms can cause floods, landslides, uprooted trees, and downed or broken utility lines in almost any neighborhood. The City and County of San Francisco has prepared safety tips to help you have a safe winter and protect yourself and your property. For all emergencies, call 911. To report downed tree limbs, clogged catch basins or localized flooding, call 311.

How to prepare for the next storm

Overflowing Catchbasins

Catch basins are the storm drains located at most corners of the City's street intersections. They are designed to allow rainwater to drain from the gutters and into the sewer system. During rainstorms, trash and debris can prevent rainwater from entering a catchbasin. Trash and debris can also collect at the bottom of the catchbasin, allowing water to build up and spill out of the catch basins ultimately causing street flooding.  Leaves can be particularly problematic.

Sandbags

Public Works will provide San Francisco residents and business up to 10 free sandbags leading up to and during severe rainstorms. They are intended for properties prone to flooding. Sandbags can be retrieved Monday-Saturday, 8 a.m. to 2 p.m., at the Public Works’ operations yard, Marin Street/Kansas Street gate. Bring proof of address.

Storm Preparation

San Francisco winter storms can cause floods, landslides, uprooted trees, and downed or broken utility lines in almost any neighborhood. The City and County of San Francisco has prepared safety tips to help you have a safe winter and protect yourself and your property. For all emergencies, call 911. To report downed tree limbs, clogged catch basins or localized flooding, call 311.

 

How to prepare for the next storm

  • Be aware of low-elevation spots that could flood.