SNOFLO
 

       

DEVILS GATE

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March 23, 2025


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Devils Gate, located in Pasadena, California, is a gravity dam constructed in 1920 for the primary purpose of flood risk reduction along the Arroyo Seco river. With a height of 108 feet and a storage capacity of 2600 acre-feet, this dam plays a crucial role in managing water resources in the region. The structure is regulated by the California Department of Water Resources (DWR) and undergoes regular inspections to ensure its safety and effectiveness.

Despite being classified as having a high hazard potential, Devils Gate is assessed as being in satisfactory condition as of September 2017. The dam's last inspection in October 2020 confirmed its structural integrity and readiness to handle potential emergencies. With Judy Chu (D) as the congressional representative for the area, the local government takes responsibility for the ownership and operation of Devils Gate, highlighting the collaborative efforts to safeguard the community from flood risks and ensure water supply sustainability.

As a significant part of the flood risk reduction infrastructure in Los Angeles County, Devils Gate serves as a vital resource for water management in the region. Its strategic location and design contribute to the protection of surrounding areas from potential inundation, showcasing the importance of proactive measures in mitigating climate-related challenges. With ongoing regulatory oversight and regular maintenance, Devils Gate stands as a testament to effective water resource management and climate resilience efforts in Southern California.

Year_Completed 1920
Dam_Height 108
River_Or_Stream Arroyo Seco
Dam_Length 252
Primary_Dam_Type Gravity
Surface_Area 110
Hydraulic_Height 73.5
Drainage_Area 29.7
Nid_Storage 2600
Hazard_Potential High
Nid_Height 108
       

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