Hydro-Generation / Water Conveyance

San Lorenzo River Lagoon Culvert Project



Exploring new solutions to old problems

The city of Santa Cruz, California has experienced issues related to the San Lorenzo River Lagoon for several years. Where the freshwater river meets the ocean, a buildup of sand often causes the lagoon levels to rise. Impacts include flooding to the area, significant maintenance costs to perform controlled breaching, and uncontrolled breaching with risk to public safety. Syblon Reid partnered with the owner to implement an innovative approach to solving this ongoing issue. The project aims to control the lagoon water surface elevation by excavating and installing piping that will pump water from the lagoon out into the ocean without risk to the lagoon wildlife. Not only was the design innovative, Syblon Reid acted with flexibility to work around the drastically fluctuating lagoon levels.

  • Location

    Santa Cruz, CA

  • Market

    Emergency Response

  • Services

    Heavy Civil Mechanical

    Marine Work


Fluctuating Lagoon Levels

During planning, the plan was to rely on other agencies to aid in controlling the water surface elevation. Construction operations quickly found that the water levels were too inconsistent to reliably perform the necessary excavation and drilling work from a barge. Syblon Reid acted quickly and proposed building a larger berm to prevent breaching and installing a bypass system that would supplement the other controls in place. This solution successfully allowed Syblon Reid to perform the work without further delays due to breaching issues.

Facts & figures

Facts & Figures

520 +

hours of pumping water

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