About us

Water sourcing for towns, homeowners, or countries; Surveying of environmental contamination; leak detection for dams and other hard base structure. We find actionable results in all of projects with our accredited staff and industry leading service.

Our personnel and unique partnerships are continuing to find new and better ways to protect the environment and improve investment opportunities in natural resources around the world.

our team

From start to finish, our teams are ready to undertake your water related issues. With 20 years, 300 completed clients with jobs in almost every continent; we have curated our technology and mission control for your best chance at success.
Jeff LLewelyn
Managing Partner
+1 (406) 381-0524
Managing partner of Willowstick via Guardian Resources, head of Sales and Outreach
Mike Jessop
Senior Geophysicist
An original member of the Willowstick team and the developer of our proven scientific methods.
Ryan Blanchard
Sales Partner
An original member of the Willowstick team and a legacy sales partner
Isaac Jessop
Managing Partner
+1 (801) 910-7517
Managing partner of Willowstick via Guardian Resources working with internal teams and sales
Val Kofoed
Geo-Engineer
An original member of the Willowstick team and a legacy engineer
Dave Jessop
Managing Partner
Managing partner of Willowstick via Guardian Resources, head of R&D
Untitled UI logomark
Scott Osterman
Sales Partner
Chief Business Consultant and sales partner for Guardian X Willowstick
Jose Montoya
Sales Partner - South America
+1 (602) 670-6152
Our South American sales representative working to help bring water to the world
Mitchell Green
Senior Geologist
A valued geophysicist and geo-analyst
Taylor Stipe
Senior Data Analyst
One of our legacy members, premier data analyst, specializing in Dam's
Nicolo Castioni
Senior Field Chief
Our senior field chief, specializing in job quality and data collection
Chris Smith
Senior Data Analyst
One of our premier data analyst and team leads
Jonathan Rice
Data Analyst
One of our premier data analyst, specializing in job set up and data quality
Marissa Redgrave
Data Analyst
One of our premier data analyst, specializing in Dam's

Request a Quote Today!

Our professional sales force is ready to walk you through your job, ensuring your best chance at remediation, water flow, or identification of water seepage.

We ensure a level of systematic completion with our drone surveying, internal systems and Guardian App
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Industry Leading

At Guardian Resources and Willowstick Technologies, we harness the power of our patented Magnetometric Resistivity (MSR) technology to set new standards in geophysical exploration and mapping. With two patents under our name and over twelve publications written by or about our groundbreaking work, our industry-leading expertise is well-documented and widely recognized.

This advanced technology significantly enhances detection accuracy and operational efficiency across our six primary services, leading to considerable cost savings in exploration and remediation efforts. Our innovative approach to subsurface groundwater flows exemplifies our commitment to precision and excellence in the geophysical field.
Water sourcing engineers at Willowstick Technologies

EXPERIENCED

The innovation at the heart of our technologies is driven by the distinguished contributions of Dr. Jerry Montgomery, who earned his PhD in Geophysics from the University of Utah, and Dr. Rondo Jeffery, a PhD in Physics from the University of Illinois – Urbana/Champaign.

Their collaborative efforts have solidified our position at the forefront of the geophysical field, allowing us to successfully complete over 300 groundwater characterization projects worldwide.

Our team’s expertise makes us a preferred partner for the world’s most sophisticated clients and consulting engineers facing complex subsurface water challenges.