Crew works to stabilize a severely eroded roadside slope.

Understanding Atmospheric River Events

Atmospheric river events are long, narrow corridors of concentrated moisture in the atmosphere that transport significant amounts of water vapor from tropical regions to mid-latitude and coastal areas. When these weather systems make landfall, they can cause extreme rainfall, flooding, landslides, and erosion, leading to catastrophic damage to infrastructure, roadways, bridges, railways, and utility networks.

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The Geohazard Impacts of Atmospheric River Events

The immense precipitation from an atmospheric river can trigger a variety of geohazards, including:

  • Landslides & Slope Failures – Saturated soils lose stability, causing landslides that can block highways, railways, and access roads.
  • Rockfall & Debris Flow – Increased water runoff can loosen rock formations, leading to dangerous rockfall and debris flow hazards.
  • Soil Erosion & Embankment Instability – Excessive rain can wash away critical soil structures, undermining foundations and creating instability in embankments and slopes.
  • Flooding & Infrastructure Damage – High-intensity storms can overwhelm drainage systems, causing severe flooding and water-related damage to roads, tunnels, and bridges.
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How We Can Support Geohazard Mitigation After an Atmospheric River Event

We specialize in rapid-response geohazard mitigation solutions to restore and protect infrastructure after atmospheric river events. Our team works closely with Departments of Transportation, rail companies, power utilities, and general contractors to assess damage and implement effective remediation strategies.

Our Post-Event Mitigation Services:

Spider excavator scaling a steep roadside slope.

We deploy specialized equipment, including spider excavators and rope-access crews, to remove debris and stabilize slopes after landslides.

Shotcrete wall with drainage holes above a rock-covered slope next to a road.We enhance stormwater management with culvert repair, placement, and subsurface drainage systems to mitigate future flooding risks.

Worker in orange safety gear stands on a repaired roadside.

Our foundation support solutions include micropiles, shotcrete walls, and embankment reinforcement to restore damaged infrastructure quickly.

Why Choose Us for Geohazard Mitigation?

  • Rapid Emergency Response: We mobilize quickly to assess damage and implement solutions, minimizing downtime and disruption.
  • Specialized Equipment & Techniques: Our use of innovative methods such as limited-access drilling, helicopter-assisted installations, and soil stabilization ensures efficient, long-lasting solutions.
  • Expert Team & Proven Experience: With extensive experience in geohazard mitigation, we have successfully restored critical infrastructure in the wake of extreme weather events across the country.
  • Customized, Site-Specific Solutions: We develop tailored mitigation plans based on the unique geotechnical challenges of each site, ensuring optimal stability and resilience.

Client Reviews

Emergency Landslide Repair in Wyoming

In 2017, another well above normal snowpack winter and heavy spring rains resulted in 23 new landslides, which damaged or threatened WYDOT roads. WYDOT turned to GSI to help respond to these emergency situations. GSI was able to respond very quickly and in most cases had personnel on site to assess the site within 24 hours. They would provide a proposal for remediation with a preliminary design and estimated costs within 48 hours in most cases. During 2017, GSI was selected to perform remediation with contracts at six separate sites. In all cases, they were prepared to mobilize to the sites and begin work within a week of being given notice to proceed.

A unique element of these emergency contracts was a partnership, between WYDOT and GSI, by which WYDOT provided some logistical support such as traffic control and providing water for drilling operations so that GSI could focus its efforts on performing the specialty work. This arrangement resulted in cost effective, efficient, successful projects. When responding to emergency landslide repair, time truly is money, the sooner a landslide can be remediated before it has a chance to grow, the less expensive it is to repair. In the past, WYDOT has experienced situations in which, landslides could possibly have been remediated quicker, experienced further failure during drawn out conventional design and contracting methods resulting in higher costs due to the additional failure. GSI uses various types of innovative geo-technology in their landslide remediation projects….

All of these projects were completed on schedule, even with cold weather conditions and snow storms ….

All of the stabilization projects that GSI completed for WYDOT included a warranty to repair any of the remediation that would happen to fail, but to date none of the work that they have performed has required any repair. I would highly recommend GeoStabilization International to perform emergency landslide and slope remediation work. They have the resources, personnel, and expertise to respond to your emergency in a timely, professional manner.

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.

Professional and Efficient Project Support in Ohio

I am pleased to write this note about our working relationship with GSI. My experience with them has been excellent. They have a great team of people from engineering to construction. GSI is a fast acting group who puts a solid proven solution to work in a very quick manner. Their field personnel are well schooled on their construction methods and quite efficient when providing the services required to meet design. It has been refreshing to work with this group, as they are professional from design to implementation.

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Contact Us for Geohazard Mitigation Support

If your infrastructure has been impacted by an atmospheric river event, we are ready to provide expert geohazard mitigation solutions. Contact us today to learn more about our emergency response services and long-term resilience strategies.

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855.579.0536

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    How Can We Help?

    • Personal Info
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    • Project Info

    How Can We Help?

    • Personal Info
    • Contact Info
    • Project Info