Cornforth Consultants
  • Home
  • Services
    • Earth & Rockfill Dams
    • Reservoirs, Canals, and Levees
    • Spillway Safety Inspections
    • Landslides and Rockfall
    • Earthquake Engineering
    • Geologic Hazards
    • Geotechnical Site Characterization
    • Hydrogeology
    • Expert Witness
    • Concrete Dams and Locks
    • Geotechnical Instrumentation
    • Deep and Shallow Foundations
    • Geotechnical Manuals
  • Industries
    • Water Resources
    • Energy
    • Natural Resources
    • Industrial
    • Transportation
    • Ports and Airports
    • Expert Witness
  • Projects
    • Earth and Rockfill Dams >
      • Barney Reservoir
      • Frog Lake Reservoir
      • Iron Gate Dam Raise
      • McGuire Dam Raise
      • Bonneville Cofferdam
      • Bull Run No. 2 Seismic Stability Analysis
    • Levees and Canals >
      • Libby Dike Rehab.
      • St. Johns Dike Stabilization
      • Cowlitz River Levees
      • Swift Canal Failure
    • Earthquake Engineering >
      • Barney Dam Seismic Analysis
      • Fern Hill WTP Liquefacation Study
      • Bull Run No. 2 Seismic Stability Analysis
      • Mt. Tabor Seismic Stability Analysis
      • Port Westward Power Plant Seismic Design
    • Rock Slopes and Tunnels >
      • Libby Rockfall Mitigation
      • Sandy River Pipeline Tunnels
      • Ketchikan Third Avenue Extension
      • Sain Creek Water Supply Tunnel
      • Montana Rockfall Hazard Rating System
    • Foundations >
      • Port Westward Power Plant
      • Cascade Locks Casino
      • Air National Guard Hangar
      • Biglow Canyon Windfarm
      • Oakridge Water System Improvements
    • Concrete Dams and Locks >
      • John Day Lock & Dam
      • Marmot Dam Removal
      • The Dalles Dam
      • Willamette Falls Dam
      • Bonneville Dam
    • Transportation >
      • OTIA Cracked Bridge Geotechnical Baselines
      • Newburg Dundee Bypass Design DEIS
      • I-84 Sandy River Bridge Investigation
      • Tanana River Bridge Foundation, Tok, Alaska
      • Montana RHRS Implementation
      • Ketchikan Third Avenue Extension
    • Ports and Airports >
      • Navy CVN Drydock
      • Depoe Bay Seawall Distress
      • Willamette Falls Flow Control Structure
      • Air National Guard Hangar
    • Water and Wastewater >
      • Fern Hill Water Treatment Plant
      • Tualatin Valley North Transmission Line
      • Evaluation of 28 Water Storage Facilities
      • City of Sandy Water Treatment Plant
      • Mt. Tabor Reservoir No. 5 Cap Study
      • Oakridge Water System Improvements
  • Key Staff
    • Mike Meyer
    • Gerry Heslin
    • Brent Black
    • Ben George
    • Chris Carpenter
    • Charlie Hammond
    • Darren Beckstrand
    • George Machan
    • Tom Westover
    • Wade Osborne
    • Adam Koslofsky
    • Andy Kost
    • Aine Mines
    • Logan Allender
    • Anna Casady
    • Noah Kimmes
    • Aleyna Link
    • Justin McCarley
    • Michael Bunn
    • Larry Pierson
    • Andy Vessely
    • John Sager
  • Resources
  • Careers
    • Geotechnical Engineer
  • Contact Us
Photo of Iron Gate Dam
Picture

CORNFORTH CONSULTANTS, INC.

We are a Portland, Oregon based geotechnical firm established in 1983. Our firm specializes in dams, seismic studies, geotechnical engineering, engineering geology, hydrogeology, and complex geotechnical studies to support dams, levees and flood control works, transportation infrastructures, and other civil works.
​
Through our division Landslide Technology, we offer hazard evaluation, characterization, analysis, and mitigation of landslides, and rockfall issues.
​
Cornforth Consultants provides services to a variety of clients and often leads multidisciplinary teams in projects for federal agencies, utilities, state agencies, cities, counties, and private clients.
Our innovative solutions regularly receive awards for engineering excellence. Our experience and judgment results in time and cost savings for our clients.
"The Cornforth team excels as geotechnical engineers on projects as their staff have the ability to translate detailed engineering results to layman terminology."
      -Sara Morrissey, Levee Ready Columbia Program Manager, Multnomah County Drainage District No. 1

​"Not only have the deliverables/products been of excellent quality, but working with your staff has been a delightful experience for all of us here. Your folks are simply first rate technically, professionally and personally."
     -Dave Stanley C.P.G., Chief Eng. Geologist, Alaska Dept. of Transportation and Public Facilities

"It is anticipated that the overall project costs will be 10% less than estimated due to Cornforth Consultant's field decisions."
     -Sid Hillier P.E., Civil Engineering Manager, Portland General Electric
  • Home
  • Services
    • Earth & Rockfill Dams
    • Reservoirs, Canals, and Levees
    • Spillway Safety Inspections
    • Landslides and Rockfall
    • Earthquake Engineering
    • Geologic Hazards
    • Geotechnical Site Characterization
    • Hydrogeology
    • Expert Witness
    • Concrete Dams and Locks
    • Geotechnical Instrumentation
    • Deep and Shallow Foundations
    • Geotechnical Manuals
  • Industries
    • Water Resources
    • Energy
    • Natural Resources
    • Industrial
    • Transportation
    • Ports and Airports
    • Expert Witness
  • Projects
    • Earth and Rockfill Dams >
      • Barney Reservoir
      • Frog Lake Reservoir
      • Iron Gate Dam Raise
      • McGuire Dam Raise
      • Bonneville Cofferdam
      • Bull Run No. 2 Seismic Stability Analysis
    • Levees and Canals >
      • Libby Dike Rehab.
      • St. Johns Dike Stabilization
      • Cowlitz River Levees
      • Swift Canal Failure
    • Earthquake Engineering >
      • Barney Dam Seismic Analysis
      • Fern Hill WTP Liquefacation Study
      • Bull Run No. 2 Seismic Stability Analysis
      • Mt. Tabor Seismic Stability Analysis
      • Port Westward Power Plant Seismic Design
    • Rock Slopes and Tunnels >
      • Libby Rockfall Mitigation
      • Sandy River Pipeline Tunnels
      • Ketchikan Third Avenue Extension
      • Sain Creek Water Supply Tunnel
      • Montana Rockfall Hazard Rating System
    • Foundations >
      • Port Westward Power Plant
      • Cascade Locks Casino
      • Air National Guard Hangar
      • Biglow Canyon Windfarm
      • Oakridge Water System Improvements
    • Concrete Dams and Locks >
      • John Day Lock & Dam
      • Marmot Dam Removal
      • The Dalles Dam
      • Willamette Falls Dam
      • Bonneville Dam
    • Transportation >
      • OTIA Cracked Bridge Geotechnical Baselines
      • Newburg Dundee Bypass Design DEIS
      • I-84 Sandy River Bridge Investigation
      • Tanana River Bridge Foundation, Tok, Alaska
      • Montana RHRS Implementation
      • Ketchikan Third Avenue Extension
    • Ports and Airports >
      • Navy CVN Drydock
      • Depoe Bay Seawall Distress
      • Willamette Falls Flow Control Structure
      • Air National Guard Hangar
    • Water and Wastewater >
      • Fern Hill Water Treatment Plant
      • Tualatin Valley North Transmission Line
      • Evaluation of 28 Water Storage Facilities
      • City of Sandy Water Treatment Plant
      • Mt. Tabor Reservoir No. 5 Cap Study
      • Oakridge Water System Improvements
  • Key Staff
    • Mike Meyer
    • Gerry Heslin
    • Brent Black
    • Ben George
    • Chris Carpenter
    • Charlie Hammond
    • Darren Beckstrand
    • George Machan
    • Tom Westover
    • Wade Osborne
    • Adam Koslofsky
    • Andy Kost
    • Aine Mines
    • Logan Allender
    • Anna Casady
    • Noah Kimmes
    • Aleyna Link
    • Justin McCarley
    • Michael Bunn
    • Larry Pierson
    • Andy Vessely
    • John Sager
  • Resources
  • Careers
    • Geotechnical Engineer
  • Contact Us