City of Santa Rosa PlanetBids #RFP_Lake_Cachuma_Area-Capacity_Survey_2026

Lake Cachuma Area-Capacity Survey (Aerial and Bathymetric) for Santa Barbara County Water Agency

Santa Barbara County Water Agency is seeking qualified consulting firms to conduct a comprehensive area-capacity survey of Lake Cachuma to support water supply planning and operational decisions. - Government Buyer: - Santa Barbara County Water Agency (Public Works Department - Flood Control - Water Agency, Project Clean Water) - Scope of Work: - Perform a combined aerial and bathymetric survey of Lake Cachuma - Bathymetric survey using multibeam or equivalent technology - Topographic survey of exposed reservoir areas (LiDAR, UAV, or conventional methods) - Data processing and analysis to develop updated elevation-area and elevation-capacity relationships - Quantify sediment accumulation and storage loss since 2021 - Deliver technical reports, detailed tables, maps, and GIS/CAD data - All digital deliverables must comply with Section 508 and WCAG 2.1 Level AA accessibility standards - All work must be supervised and stamped by a California Licensed Land Surveyor - Notable Requirements: - Strict compliance with Lake Cachuma boating and vessel access restrictions (inspection, quarantine, decontamination) - Coordination with local agencies as needed - Adherence to ADA digital accessibility standards for all deliverables - OEMs and Vendors: - No specific OEMs or manufacturers are named; opportunity is open to qualified engineering and environmental consulting firms - Place of Performance: - Lake Cachuma, Santa Barbara County, California - Santa Barbara County Water Agency office (130 E. Victoria Street, Suite 200, Santa Barbara, CA 93101)

Description

The Santa Barbara County Water Agency is soliciting proposals for a combined aerial and bathymetric survey of Lake Cachuma to update elevation-area and elevation-capacity relationships. The project aims to quantify sediment accumulation since 2021, improve reservoir storage accuracy, and support water supply planning. The scope includes field surveys, data processing, analysis, and delivery of technical reports and geospatial data. Proposals are due by May 15, 2026, with field work to be completed by August 31, 2026.

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