Hydrogeology

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Dewatering System for a Dam Foundation

Cornforth Consultants' hydrogeologists offer extensive experience characterizing the groundwater conditions for project sites and identifying impacts for construction. When conditions or project objectives dictate, our team designs dewatering measures to temporarily dewater a site during construction or for the design life of the project. We routinely complete regional groundwater studies, pump tests, and dewatering designs in a variety of geologic settings to meet project objectives.

​Listed below are representative projects and services for clients such as the US Army Corps of Engineers, City of Longview, Jensen Drilling, and PacifiCorp Energy.

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Representative Projects:

• Navy CVN Drydock Repair
• St. Johns Levee Cutoff Wall
• Ashton Dam Seepage Investigation
• Trojan Nuclear Plant Water Supply

• ​Cowlitz River Levees
• Fern Ridge Dam Dewatering
• Scoby Hill Landslide Dewatering
• Ives Island Habitat Piezometers
• Spangler Hill Landslide

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Services Offered Regarding Hydrogeology:

• Seepage Analysis
• Groundwater Evaluation and Development
• Field Explorations
• Dewatering Design
• Pump Tests

• Groundwater Control & Cutoff
• Numerical Modeling
• Groundwater Monitoring Systems
• Aquifer Testing
• Pumped Storage Feasibilty