Floating Wave Attenuator at Diamond Valley Lake, Hemet, CA

Diamond Valley Lake reservoir, Hemet CA — floating wave attenuator and marina design for Los Angeles Metropolitan Water District

Design of a 300-ft long Floating Wave Attenuator

Boarding floats for the launch ramp.

Lead Design Engineer /  Project Manager 
Client: Los Angeles Metropolitan Water District
Projects: Diamond Valley Lake Marina – Floating Wave Attenuator; Diamond Valley Lake Marina Launch Ramp Boarding Floats
Location: Hemet, California
Duration: 2003–2006

Project Background

These projects involved the development of recreational boating facilities at Diamond Valley Lake in Hemet, California, including marina and launch ramp infrastructure and associated wave mitigation systems. The marina projects required innovative coastal and structural engineering, floating wave attenuator design, and launch ramp boarding float systems capable of adapting to significant seasonal water level fluctuations.

  • Floating Wave Attenuator (2003–2005): Designed to protect the marina from wind-generated waves and ensure safe mooring and navigation conditions.

  • Launch Ramp Boarding Floats (2006): Designed floating boarding floats on cylindrical floatation tubes to accommodate an 8-lane launch ramp capable of adjusting to over 100-foot reservoir water level fluctuations.

Design, Analysis, and Engineering Services

Floating Wave Attenuator (2003–2005):
While employed by Bluewater Design Group, Anthony T. Mets, P.E. served as Lead Design Engineer and Project Manager, responsible for:

  • Structural and wave transmission analysis of the reinforced, post-tensioned floating wave attenuator and its anchoring system

  • Preparation of design drawings and calculations for structural components, floating FWA and dock modules and anchoring systems

  • Development of software to assess performance of several FWA cross-section alternatives

  • Methodology development and supervision of a 120-foot-deep catenary anchor pull test at elevation, including underwater inspection and audio-video recording

Launch Ramp Boarding Floats (2006):
While employed by Bluewater Design Group, Mr. Mets performed:

  • Buoyancy and anchoring design for tubular boarding floats to support an 8-lane launch ramp

  • Design to accommodate self-adjusting and self-correcting stationing operation for over 100-foot reservoir water level fluctuations

  • Integration of boarding float system with marina and launch ramp layout for safe, efficient recreational boating operations

Both projects combined advanced analysis, structural design, and practical constructible solutions to deliver safe, durable, and adaptable marina infrastructure.

This project was performed by Anthony T. Mets, P.E. while employed by another engineering firm. It is included here to illustrate relevant professional experience and does not represent work performed by Thalassa Technology and Engineering.

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