Public Safety

Palm Springs Flood Tunnel Upgrades Remove 500+ Properties from FEMA High-Risk Zone

Major updates to Palm Springs’ $16 million stormwater diversion tunnel, known as Line 41, are already making an impact. The tunnel, which runs under Highway 111, was instrumental in preventing flood damage during Hurricane Hillary in 2023.

Thanks to recent infrastructure improvements, more than 500 structures in the city have now been removed from FEMA’s high-risk flood zone. These changes were made official with the approval of updated flood maps by Riverside County. For property owners, this shift could lead to significantly lower flood insurance premiums.

The FEMA zone removal officially takes effect on July 18, giving homeowners time to evaluate new insurance options and potentially save money. Officials urge residents to review their flood coverage and consider how the updated maps may affect their rates.

The Line 41 project is a key part of the city's broader flood mitigation efforts, ensuring both residential and commercial areas are better protected from future storm threats.

Explore: NBCPalmSprings.com, where we are connecting the Valley.

By: NBC Palm Springs

June 24, 2025

Palm Springs flood tunnelLine 41 projectFEMA flood zonestormwater diversionflood insurance savingsHurricane HillaryPalm Springs infrastructureHighway 111 flood protection
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