• Groundwater

    GSI's hydrogeologists are experts at finding groundwater, determining the extent and capacity of aquifers, and helping our clients in Oregon, Washington, and California develop this valuable resource. GSI specializes in aquifer storage and recovery (ASR), an innovative technology that uses the natural storage capacity of an aquifer to store treated water underground.

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  • Environmental

    GSI's technical expertise, experience, and excellent relationships with regulatory agencies help our clients to effectively address their environmental challenges. GSI has a wide variety of environmental project management and permitting experience, including working on several Superfund sites involving contaminated soil and groundwater.

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  • Water Rights

    GSI's experts understand the complexities of water rights and have experience working with multiple state agencies, attorneys, and other organizations involved in water rights issues. We help our clients develop water rights management strategies to address their water needs.

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Latest News

In memoriam: Bill Mason

It is with great sadness that we announce the passing of our friend and colleague, Bill Mason. Bill came to work ...

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Examining the causes of long-term streamflow declines

Three GSI staff members—John Porcello, Walt Burt, and Jake Gorski—published a feature article in the December issue of The Water ...

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Ed Tenny Retires (Again)

GSI general manager Ed Tenny has announced that he will be retiring at the end of the year. Those who ...

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Happy Birthday, GSI!

GSI isn’t the kind of company that makes a big fanfare of an anniversary, so it almost went quietly under ...

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