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Office

Corvallis

SWCA’s Corvallis office was established with the acquisition of River Design Group in 2024. The Corvallis team provides a variety of services including river restoration, fish passage, dam removal, watershed assessments, and remote sensing.

Small dam with multiple spillways and a fish ladder.

The Latest from SWCA

View of existing concrete dam and fish ladder structure.

Odell Creek Dam Removal

Pacific Northwest • Odell, Oregon
View looking downstream at new fish passage culvert installed in Mill Creek.

Mill Creek Fish Passage

Pacific Northwest • Tillamook County, Oregon
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Project Spotlights

Middle Fork Coquille Falls Project: Improving Fish Passage Through Innovative Design and Implementation

An excavator uses a pneumatic hammer to break boulders on the rivers path.
Project Spotlights

Restoring Pathways: Enhancing Fish Passage in Okanogan River Tributaries
SWCA News

SWCA Acquires Leading Restoration Firm River Design Group
All News + Insights
Awards • 2025

2024 EBJ Business Achievement Award | Mergers & Acquisitions

SWCA Environmental Consultants’ acquisition of River Design Group (RDG) in July 2024 marked a significant milestone, particularly in water resources engineering and ecological restoration. This strategic expansion enhanced SWCA’s presence in the Northwest United States, adding offices in Corvallis, Oregon, and Whitefish, Montana, and bolstering expertise in stream, river, and wetland restoration, dam removal, fish passage, land survey, and watershed assessments.

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All Awards + Rankings

See Beyond Policy Change to What Matters for Your Project

Regulatory Radar is a subscription intelligence service that scans the policy horizon for changes that could affect planning, permitting, schedules, and risk, then turns those signals into clear takeaways and practical next steps.

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