Free sandbags in Napa County, CA
Where to get sandbags, how to get official alerts, and how to check your own address before the next storm.
Where to get free sandbags in Napa County, CA
City of Napa: sand and sandbags are free to city residents and business owners on the first Saturday of each month, November through April, 8 a.m.-4 p.m. at 720 Jackson St (self-serve, bring gloves and shovel, limit 10 bags per household), and during Flood Watches. Napa County OES says sandbags are also available about 48 hours before a storm during business hours; see its station list.
- City of Napa: sandbag programcityofnapa.org
- Napa County: flood and storm resourcesnapacounty.gov
Checked against official sources on October 24, 2026.
Free storm alerts for Napa County
When the National Weather Service issues a flood, fire, wind or hurricane warning for Napa County, we email you right away with what to do. We also give you a heads-up a day ahead when NOAA forecasts severe storms or flash-flooding rain.
Want alerts for your exact street instead? Check your address and sign up there.
Flood maps for Napa County
1,840 FEMA flood-zone areas mapped across 82 map panels.
MyStormPlan hosts FEMA's flood map data for Napa County (FEMA data as of June 25, 2024), so you can see the exact zone at your front door in seconds. You'll also see wildfire, earthquake and other hazard layers for your address.
Get official emergency alerts
Napa County's official alert system is Alert Napa County. It's free and sends warnings to your phone when a storm, fire or evacuation affects your area.
Before the storm: a quick checklist
- Pick up sandbags early. Supplies run out once a storm is in the forecast.
- Fill bags about halfway and lay them flat, overlapping like bricks, at doorways and the garage door.
- Clear gutters, downspouts and the storm drain in front of your house.
- Move valuables, papers and electronics off the floor.
- Take photos or a video of your rooms and belongings for insurance.
- Never walk or drive through floodwater. Turn around, don't drown.
Questions people ask
Where can I get free sandbags in Napa County, CA?
City of Napa: sand and sandbags are free to city residents and business owners on the first Saturday of each month, November through April, 8 a.m.-4 p.m. at 720 Jackson St (self-serve, bring gloves and shovel, limit 10 bags per household), and during Flood Watches. Napa County OES says sandbags are also available about 48 hours before a storm during business hours; see its station list.
How do I get emergency alerts in Napa County, CA?
Sign up for Alert Napa County, which is free, and turn on Wireless Emergency Alerts on your phone.
How do I know if my home is in a flood zone in Napa County, CA?
Enter your address at mystormplan.com/check to see your FEMA flood zone and other hazards for your exact property, free.
How many sandbags do I need?
A common rule of thumb is about 100 bags to build a wall 1 foot high and 20 feet long. Most homes use sandbags to steer water away from doorways and garage doors. Fill bags only about halfway so they lie flat and tight.
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