Horizontal Drain Contractor

Engineered Groundwater Control for Slopes & Dewatering

GeoStabilization International is a trusted horizontal drain contractor specializing in pore-pressure reduction and subsurface dewatering for mines, transportation corridors, and critical infrastructure. With hydrologist-engineered designs, proprietary remote-access drilling systems, and above-industry production standards, we deliver drainage solutions that stabilize slopes, extend asset life, and keep projects on schedule.

Whether you’re mitigating highwall risk, addressing persistent seepage, or restoring stability after wildfire or flood, our design-build teams provide turnkey horizontal drain systems—installed safely and efficiently in the most challenging terrain.

Why Choose GSI as Your Horizontal Drain Contractor

Turnkey design-build — Site-specific designs by hydrologists and geotechnical engineers, integrated with in-house installation
Proprietary drilling systems — Remote-access rigs and specialty tooling that consistently achieve above-industry production
Launched horizontal drains — Where appropriate, launched methods accelerate installation and minimize site disruption
Mining-ready expertise — Decades supporting surface mines and critical mineral projects across North America
Performance verification — Post-installation monitoring and testing to confirm drain effectiveness
Compliance & coverage — Licensed across the U.S., with solutions tailored to environmental and jurisdictional requirements

Our Horizontal Drain Services

Site-specific drain design — Hydrologist-engineered layouts tuned to geology, hydrogeology, and performance targets
Subsurface investigation — Targeted exploration to optimize drain alignment, spacing, and depths
Installation — Remote-access drilling, long-reach capability, and launched options for steep slopes, highwalls, and constrained corridors
Monitoring & testing — Performance verification and ongoing tracking to ensure sustained pore-pressure reduction

Ideal Applications

Pore-pressure reduction in unstable slopes

Persistent seepage zones and wet faces

Mining highwall and pit-slope dewatering, haul roads, and tailings perimeters

Landslide-prone corridors and embankments

Saturated slopes following wildfire or flood events

Infrastructure protection for roads, rail, and pipelines

Advantages of Horizontal Drains with GSI

As a specialty horizontal drain contractor, we deliver systems that improve stability while minimizing disruption:

Effective pore-pressure reduction that increases slope reliability and service life
High production rates enabled by proprietary rigs and launched methods
Access in difficult terrain, including steep, remote, or low-headroom sites
Reduced surface disturbance versus large surface drainage structures
Integrated quality management to verify performance

Industries We Serve

Mining & Critical Minerals — Highwalls, pits, haul roads, tailings facilities
Transportation — DOT corridors, cuts, and embankments
Rail — Slope stability and seepage control along active corridors
Utilities & Energy — Pipeline corridors, substations, and approach fills
Municipal & Private Development — Hillside stabilization and seepage mitigation

Geohazard Repair in Kentucky

GSI, thanks for another successful project. It is always nice to work with you and your field crews. We are currently experiencing flooding here in [this area], so I am sure we will be utilizing your services once again in the near future. The repair was “headache free” and that is very nice, to have a company and crew, come in do their job. You would be surprised how many contractors come in and are not as safety oriented and headache free as yours and for that reason, I am writing this email to let you know as a manager I appreciate the professionalism.

Organized and Dependable Crew Support in Vermont

You and Chris are awesome to work with! … Your crews that have been here are all very well organized, dependable and get their work done! GSI should be very proud of the crews they have working for them. Thanks again Perry for all your help and assistance!

On-Schedule and Professional Project Support in Virginia

As told by GSI Project Development Engineer: I was happy to take a call from [the Residency engineer] today and listened to him tell me how happy he was with the performance of Dylan and entire crew at the Garden Creek site. He had great things to say about the competence, work ethic, and professionalism of the whole team out there, and wanted to thank Dylan for the excellent communication as the project has unfolded. This is no small compliment, as this project began in a potentially negative atmosphere since the public thought we were behind schedule before we ever arrived! Nicely done, guys.

GET IN TOUCH

Contact Us Today

Need a horizontal drain contractor you can trust? GSI’s design-build teams provide engineered dewatering systems that reduce pore pressure, stabilize slopes, and extend infrastructure life.

Request a site assessment or proposal today.

855.579.0536

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Engineered Groundwater Control for Slopes & Dewatering

Why Choose GSI as Your Horizontal Drain Contractor

Our Horizontal Drain Services

Contact Us Today

855.579.0536

Ideal Applications

Advantages of Horizontal Drains with GSI

Industries We Serve

Geohazard Repair in Kentucky

Organized and Dependable Crew Support in Vermont

On-Schedule and Professional Project Support in Virginia

Contact Us Today

How Can We Help?

***Fees May Apply For Residential Site Visits***

How Can We Help?

How Can We Help?

Our Awards, Certifications, & Memberships

Fees May Apply For Residential Site Visits