Floodplain Management Program

The City of Napa Development Engineering Division houses the City's Floodplain Management Program and is responsible for managing the City's floodplain needs. Our priority is to make sure that the public is well informed and safe from flooding and that the City stays in compliance with FEMA's National Flood Insurance Program (NFIP). The City also participates in the voluntary incentive program through the NFIP called the Community Rating System (CRS). The CRS recognizes floodplain management programs by reqarding efforts that exceed the minimum NFIP requirements in the form of discounted flood insurance rates for its communities. 

Flood Improvement Projectsnapa dry bypass

In 2000, the Napa County Flood Control and Water Conservation District in conjunction with the Army Corps of Engineers embarked on what would be a 16 year project to improve flood measures along the Napa River. Phase one of the Napa Creek Bypass Project was completed in 2012 and resulted in a large number of properties being mapped out of the floodway and floodplain. 

The second phase of the Flood Project "Napa River Dry Bypass" was completed in the fall of 2016 and was successfully put to the test several times during the 2016-2017 rainy season when the County received record amounts of rainfall. The City and Flood District are currently working with FEMA to release an updated flood map that will reflect the improvements made  from Phase II of the Flood Project. 

Construction in the Floodway and Floodplain

Interested in developing in the Floodway or Floodplain? While not impossible, potential projects will need to follow strict design guidelines to ensure that any proposed development will not only withstand a flooding event but also not jeopardize the existing surrounding or downstream structures. Design guidelines for development in the floodway/floodplain may be found under the City's Municipal Code Section 17.38-Floodplain Management Overlay District

Storm Readiness

Turn around dont drownThe City of Napa offers free sandbags to the community on the first Saturday of the month November thru March at the City of Napa Corporation Yard at 770 Jackson Street from 9am-1pm. In the event that a Flood Watch develops, the City will open additional sandbag distribution locations for residents and business owners. Additional information may be found under the Emergency Information page.

Preparing for potential flooding is important, citizens are encouraged to visit Floodsmart's website where you can learn about flood preparedness, and the benefits of protecting your property against flooding and learn about the FAQ's of flood insurance. 

Citizens can access real time data during a storm by visiting Napa One Rain and National Weather Service websites. Stay informed by registering with Nixle.com to receive local alerts. 

  1. Juan Zuniga

    Associate Civil Engineer

  2. Tim Wood

    Senior Civil Engineer