Collier Geophysics, LLC Collier Geophysics, LLC
Commitment to our clients, professional integrity, and loyalty to one another are the things we value most.
Nathan Collier, President

Applications

We offer a full spectrum of expert surface, borehole, airborne, and marine geophysical solutions for today’s needs throughout the U.S. and around the globe. If you have problems or challenges in any of our service areas, let us bring you solutions.

Groundwater

Groundwater

Mapping aquifers at the site scale or basin-wide investigations

Engineering & Geotechnical

Engineering & Geotechnical

Measuring subsurface conditions to support infrastructure and construction

Environmental

Environmental

Subsurface characterization for site assessments and remediation

Energy

Energy

Exploration to support petroleum and renewable energy projects

Tunneling

Tunneling

Contribute to tunnel design and operations and mitigate environmental and legal concerns

Archaeological & Forensic

Archaeological & Forensic

Support construction permitting, historical assessment, and insurance investigations

Mine Site Engineering

Mine Site Engineering

Subsurface mapping for mine water management and geotechnical investigations

Mineral Exploration

Mineral Exploration

Exploration for metallic and non-metallic resources

Concrete Inspection

Concrete Inspection

Map concrete thickness, rebar/reinforcement patterns, embedded conduits, and defects

Geological Studies

Geological Studies

Support rock-slope stability analysis, tunnel exploration and development, bedrock fracture analysis, and geologic research

Marine

Marine

Exploration and geotechnical surveys in marine, lacustrine, and fluvial environments

Litigation Support

Litigation Support

Expert investigations, opinions, and testimony

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News & Events

February 9, 2026

Groundwater Picture of the Month – February 2026

Something is hauting our coastlines; they’re called “ghost forests.” Learn what they can tell us about our water supplies.

January 6, 2026

Groundwater Picture of the Month – January 2026

Discover what you can learn about groundwater from a famous nursery rhyme!

December 16, 2025

Groundwater Picture of the Month – December 2025

Water from Owens Valley for Los Angeles Water Supply Includes Groundwater!

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