San Diego Ramps Up Storm Channel Maintenance Amid El Niño Concerns, Infrastructure Gaps Persist

San Diego, CA, August 20, 2026 —

San Diego is intensifying its efforts to maintain its storm channels as the region prepares for a potentially strong El Niño. This increased focus comes in the wake of the 2024 floods that impacted the city.

Despite these preparations, a significant portion of the city’s storm channels are not equipped to handle extreme weather events. Current assessments indicate that only 17% of San Diego’s storm channels are designed to manage the capacity of a 100-year storm. A large majority of the remaining channels are only built to accommodate a two or five-year storm.

This disparity raises concerns among city officials and residents about the potential for overtopping and subsequent flooding, even with rainfall amounts that are not classified as extreme. The vulnerability is further compounded by the city’s aging infrastructure, which requires substantial investment for upgrades and maintenance.

Furthermore, San Diego is grappling with a considerable funding gap for its stormwater system. Addressing the infrastructure needs and ensuring adequate capacity for storm events requires significant financial resources, a challenge the city continues to navigate.

Story summarized from the original created by Tammy Murga on www.kpbs.org, see more information here.

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