Water Resources

Wood Rodgers has a broad range of expertise in water resources planning, analysis, and design. From source generation, treatment, conveyance, and distribution, to drainage analyses, master planning, and flood control design, our engineers, geologists, hydrogeologists, and floodplain managers are equipped to bring innovative solutions to complex water resources problems.

West Levee at the Yolo Bypass in Yolo County, California

Our Water Resources Services Include

Water Supply, Water Treatment and Distribution

Deep knowledge of groundwater analyses and well design, treatment (constituent removal), and distribution including pump stations, booster stations, storage tanks, and piping systems.

Hydrologic and Hydraulic Analyses

Watershed analyses, rainfall distribution, dynamic flow routing, and floodplain mapping; 1, 2, and 3-dimensional numerical river and stream modeling; site drainage analyses and municipal storm drainage master planning.

Wastewater Engineering

Providing master planning, hydraulic modeling, system analysis, condition assessment, pipeline design, lift station design, rehabilitation, and trenchless technologies.

Flood and Drainage Infrastructure Design

Conveyance channels, pipelines, pump stations, detention basins, floodwalls, levees, and hydraulic structures.


Port of Oakland Trash Capture Device Design

Oakland, California

Wood Rodgers took on the analysis, design, and construction support for a substantial trash capture device project within the Port of Oakland. This comprehensive endeavor encompassed utility investigations, site optimization, surveys, hydraulic analysis, basis of design report, design package development, and construction support. A study was initiated to assess the optimal location, configuration, and types of full trash capture devices for the watershed. Wood Rodgers aimed for designs that were not only hydraulically optimized but also easily constructable and maintainable.

Addressing challenges, the original proposed site posed significant wetland impacts, prompting Wood Rodgers to collaborate closely with the Port. Leveraging our knowledge of the Port’s storm drain system, we successfully relocated the site, eliminating wetland impacts and enhancing trash collection efficiency while minimizing backwater effects.

Further challenges were met with innovative solutions. Wood Rodgers employed post-construction large trash capture performance knowledge and detailed modeling to optimize the design, reducing head losses and mitigating impacts on the upstream storm drain system. Recognizing potential excessive maintenance requirements, we conducted thorough interviews, designed improvements for vector control, sediment channelization, and ease of maintenance, culminating in an access platform for maintenance and vehicular access.

In summary, Wood Rodgers not only overcame challenges but also ensured a holistic and efficient approach to trash capture device design, emphasizing optimization, environmental impact reduction, and long-term maintenance considerations.

Port of Oakland Stormwater Management & Tidal Flooding Vulnerability Assessment at North Field Oakland International Airport

Oakland, California

Wood Rodgers spearheaded a $1M project aimed at updating and fortifying the Oakland International Airport's (Airport) Stormwater Management Implementation Plan, originally crafted in 2009. The multifaceted initiative comprised two pivotal components:

  1. Revitalizing the Airport Stormwater Management Implementation Plan: Wood Rodgers meticulously updated the existing stormwater management model (XPSWMM and Tuflow), navigating the intricacies of an active airfield and adhering to FAA regulations. A comprehensive condition assessment of infrastructure was conducted, facilitated by custom GIS software for field inspection data collection. The project also yielded a robust Operations and Maintenance Plan along with capital improvement plan recommendations.
  2. Assessing Tidal Flooding Vulnerability at the North Field: Wood Rodgers undertook a detailed evaluation of tidal flooding vulnerabilities at the North Field, factoring in sea level rise and seismic risks to existing embankments. Dynamic tidal floodplain analysis, utilizing advanced hydraulic modeling, gauged actual flooding potential amid transient tides. Reviewing FEMA's Flood Insurance Rate Maps (FIRM), Wood Rodgers developed 2D models, assessed existing tidal flood protection facilities, and provided a range of recommendations for improvements, addressing the flood hazard.

The tidal flooding vulnerability assessment delivered an adaptive mitigation plan, outlining phased shoreline protection to mitigate risks over 50 years. Conceptual designs (10% design) of preferred tidal flooding protection improvements met stringent criteria, including static stability, seepage, storm surge, wave runup, and seismic performance. Wood Rodgers furnished schedules and cost estimates for these proposed improvements, aiming to eliminate FEMA's flood hazard designation from the North Field and ensure the Airport's resilience against future challenges.

Alameda County Pump Station Condition Assessments, Rehabilitation Studies, and Performance Evaluations

Alameda County, California

The Alameda County Flood Control and Water Conservation District (District) entrusted Wood Rodgers with a comprehensive assessment of its 24 flood control pump stations. Our team utilized Infoworks ICM to create detailed floodplain maps and developed calibrated hydrologic and hydraulic models for each station, identifying flood risks accurately. Through pump flow testing and in-depth inspections, we uncovered discrepancies between actual and manufacturer pump curves, crucial for determining 100-year flood capacity.

The project's meticulous approach extended to engine oil tests, infrared imaging, and vibration testing, providing insights into wear, potential issues, and overall system health. This thorough analysis allowed us to prioritize pump station rehabilitation, reducing flooding risk significantly. Our risk-based analysis compared costs for maintaining existing service levels versus improving to a higher level, aiding in informed decision-making.

Wood Rodgers recommended efficient combinations of reoperation, maintenance, rehabilitation, and improvements for all 24 pump stations. By defining consistent methods to prioritize needs and enhancing operations and maintenance procedures, our project ensures a resilient and effective flood control system for the Alameda County community.

Sacramento Area Flood Control Agency – Little Egbert Tract Feasibility Study

Solano County, California

On behalf of the Sacramento Area Flood Control Agency (SAFCA), Wood Rodgers evaluated 15 alternatives for constructing a multi-benefit project on Little Egbert Tract in Solano County, Ca. The purpose of the study was to identify a preferred land use combination considering regional agricultural sustainability, ecosystem enhancement, and flood risk reduction.

Little Egbert Tract is located within the lower reach of the Yolo Bypass immediately north of the city of Rio Vista. High water in February and March of 2017 came close to overtopping the restricted-height levee and caused Deep Water Ship Canal barge traffic to cease. Historically, when the restricted height levee is overtopped (1986 and 1997), the result is significant damage to the lands of the tract as well as State Highway 84. During the 1997 event, the restricted height levee breached at seven locations, with breach widths ranging from 100 to 850 feet. Additionally, almost 10,000 feet of the restricted height levee suffered slope and crown damage. Damages from the 1997 flood event amounted to approximately $2 million for RD 2084 and $5 million for Caltrans to repair State Route 84.

The work required coordination with a number of regional stakeholders including Solano County, Caltrans, local Reclamation Districts, state and federal fisheries agencies, DWR, and Westervelt Ecological Services. Wood Rodgers led the feasibility including providing project management, civil analyses, Feasibility Study report preparation, and facilitation of Study Charet