Latest Guides

Community News

Meetings Scheduled in Devil’s Gate Entrance Improvement Project

Published on Thursday, August 4, 2022 | 1:02 pm
Photo courtesy LA County Public Works

The Los Angeles County Public Works Department will conduct two community meetings on the Devil’s Gate Southeast Entrance Improvement Project.

During the meetings Public Works will be sharing the updated proposed project that was developed after receiving public input from previous community meetings.

The first meeting will be held from 6 to 7 p.m. on Wednesday when Public Works houses an on-site open house at the Southeast entrance. Renderings of proposed project will be on display and staff will answer questions.

The entrance improvement is the latest phase in the Devil’s Gate Reservoir Restoration Project.

The project began as an effort to increase flood protection for communities downstream of Devil’s Gate Dam and restore habitat within a popular section of the Arroyo Seco Watershed.

Los Angeles County Public Works removed up to 1.7 million cubic yards of sediment from the reservoir that’s immediately behind the nearly 100-year-old dam. The sediment removal portion of the project ended last year.

Neighbors worried the controversial project could last four years and eventually lead to hundreds of truck trips in and out of the Arroyo Seco daily. Known as the Big Dig, the project has come under fire by residents of Pasadena and nearby La Cañada Flintridge. It has also been assailed by the Arroyo Seco Foundation (ASF) and the Pasadena Audubon Society (PAS), both of which filed a lawsuit to stop it.

A large amount of sediment had not been removed from Devil’s Gate since 1994, when workers hauled out 160,000 cubic yards of soil and debris. An additional 1 million cubic yards of soil and debris were dumped into the basin by the Station fire in 2009, which burned more than 160,000 acres in Altadena, Pasadena, La Cañada Flintridge and Acton.

Devil’s Gate is the oldest dam constructed by the LA County Flood Control District, providing flood protection for the cities of Pasadena, South Pasadena and Los Angeles.

In addition to providing flood relief to communities that have endured nearly a decade of elevated flood risk along the Arroyo Seco, the project will also establish a permanent stormwater maintenance area that allows for the creation of 70 acres of enhanced habitat for wildlife and recreational opportunities for local communities.

For more information on the project, visit the project website at, or email the LA County Public Works Department at You may also call the Devil’s Gate Project hotline at (626) 458-2507.

Get our daily Pasadena newspaper in your email box. Free.

Get all the latest Pasadena news, more than 10 fresh stories daily, 7 days a week at 7 a.m.

Make a comment

Your email address will not be published. Required fields are marked *