Willamette Cultural Resources Associates, Ltd. (WillametteCRA) is a full-service cultural resource management firm, with offices in Portland, Oregon and Seattle, Washington. Our in-depth knowledge of state and federal cultural resource requirements allows us to provide our clients with a full-range of professional services in all areas of cultural resource management, prehistoric and historical archaeology, architectural history, and ethnographic research. WillametteCRA offers the following research and investigative services that are designed to meet federal, state, and local government historic preservation compliance requirements.


  • Archaeological inventory surveys and testing
  • Data recovery excavations
  • Archaeological monitoring of construction activities
  • Archaeological assessments and evaluations for National Register eligibility
  • Cultural resource management plans
  • Mitigation plans
    – Data recovery
    – Monitoring
    – Preservation
  • Laboratory processing and data analysis
  • Section 106 compliance studies
  • Archival and historical research
  • Historic trail research, documentation and evaluation
  • Archival and historical research
  • Cartographic research
  • GIS design and studies
  • NRHP forms, multiple property and district forms
  • Ethnographic and ethnohistoric research
  • Traditional Cultural Places (TCP) studies and oral histories
  • Place name studies
  • Tribal consultation assistance
  • Public education and outreach
  • Legacy projects (projects begun by others but not completed)

We are knowledgeable in the following areas:

  • Section 106 and NEPA requirements
  • U.S. Army Corps of Engineers Section 10 and 404 permits
  • Oregon EFSC certificate requirements
  • EPA CERCLA and Oregon DEQ programs
  • Oregon State Historic Preservation Office permitting
  • Washington State SEPA requirements
  • Washington State DAHP excavation permitting
  • Columbia River Gorge National Scenic Area permitting
  • Hazardous Waste Operations and Emergency Response

We have obtained the following ARPA permits:

  • Bureau of Land Management
  • U.S. Forest Service
  • U.S. Fish and Wildlife Service
  • U.S. Army Corps of Engineers
  • Bureau of Reclamation

We have experience with a diverse array of projects ranging in scope and size including:

  • Energy facilities such as wind farms and natural gas pipelines
  • Federally licensed dams, reservoirs, transmission lines, and PUDs
  • Water, storm-water, and wastewater treatment systems
  • Transportation and port improvements-highways, ferries, rail, and airports
  • Timber sales and forest road management
  • Habitat restoration and environmental land trust activity
  • Reservoir-related projects
  • Tribal and private development
  • Local government planning and cultural resources sensitivity modeling

We have been awarded on-call services contracts with:

  • The Port of Portland
  • Walla Walla District, U.S. Army Corps of Engineers
  • Metro
  • Portland Bureau of Transportation
  • Oregon Travel Information Council
  • Washington Department of Fish and Wildlife
  • Tacoma Power



West Butte site recording


Palomar_site testing