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Crawford Hydrology Laboratory provides professional consulting and field and laboratory services regarding groundwater tracing in karst and non-karst areas.

We specialize in groundwater investigations with the use of fluorescent dyes and utilize techniques we have developed and enhanced over the past 38 years. We provide quality supplies and analyses for groundwater traces and conduct full field investigations. Crawford Hydrology Laboratory has extensive experience conducting dye trace investigations for commercial clients as well as government agencies.

We look forward to working with you!

Earth Day 2018

The world’s largest environmental movement is coming up Sunday April 22, 2018. Learn how you can be involved!

Student Research Grant

CHL is now accepting proposals for their 2018 student research grants.


CHL is pleased to sponsor the CavesLIVE distance learning adventure. This program offers distance learning opportunities for students and educators interested in karst environments.