Natomas Floodplain

As of June 16, 2015, the City has obtained a new flood insurance rate map to provide Natomas with an A99 flood zone designation.

In 2005, FEMA reinforced the agency’s long-standing regulation to ensure that levee owners or communities document that a levee meets federal standards for protection against the one-percent-annual-chance flood.

After re-evaluation of the levees by the US Army Corps of Engineers, FEMA remapped the Natomas Basin area into a floodplain with an AE flood zone designation in December 2008.

The AE flood zone designation required elevating or flood-proofing structures at or above the 100-year floodplain, which would be up to 20 feet in some areas. This caused a de-facto building moratorium.

Now, the City has an A99 flood zone designation. A99 is an interim flood zone designation, which is still considered a high risk flood zone, but allows construction in Natomas, with local conditions.

For information regarding building in Natomas, visit the City of Sacramento's Community Development Department.

To see Historical Flood Insurance Rate Maps for Natomas, visit the FEMA Map Service Center's Historical Maps.

Flood insurance

Property owners in the Natomas Basin who have a federally-backed mortgage will still need flood insurance as the levee improvements are not complete.

For information about the National Flood Insurance Program or to locate an insurance agent, property owners can visit www.floodsmart.gov or call 1-888-379-9531.

If your property is located within the City limits, contact the City of Sacramento’s Floodplain Information Line at(916-808-5061 or floodinfo@cityofsacramento.org.

Email Community Development Department for planning and building questions at natomasCDD@cityofsacramento.org or call 311.

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