Verdantas (as MHM) supported the Lower Elkhorn Basin Levee Setback Project, the first phase of a series of flood risk management improvements identified in California's 2012 Central Valley Flood Protection Plan and the related Sacramento Basin-Wide Feasibility Report. The project included construction of approximately seven miles of setback levees in the Lower Elkhorn Basin along the east side of the Yolo Bypass and the north side of the Sacramento Bypass to improve regional flood conveyance and reduce flood risk.
Key project elements included widening the Yolo Bypass through construction of a setback levee east of the Tule Canal, widening the Sacramento Bypass through construction of a setback levee north of the existing levee, and implementing improvements within the Lower Elkhorn Basin and Sacramento Bypass to mitigate project impacts. As part of the effort, Verdantas relocated a reclamation district pump station affected by the levee improvements and provided engineering support for associated drainage infrastructure.
Verdantas delivered project management and multidisciplinary engineering services throughout planning, design, and construction. Services included preparation of the preliminary design report; geotechnical evaluations supporting final design; design engineering for pipe crossings, outfalls, and the pump station; pre-construction support; and engineering services during construction. The team also provided construction management, inspection, materials testing, quality assurance surveying, and construction closeout support.
Throughout the project, Verdantas coordinated closely with project stakeholders and regulatory agencies to support successful delivery of the pump station and drainage system improvements. Upon project completion, the team prepared operations and maintenance documentation to support long-term system performance.
The completed improvements contribute to ongoing regional flood protection efforts by enhancing flood conveyance capacity and reducing flood risk for communities, agricultural lands, and critical infrastructure throughout the greater Sacramento region.
