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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 30 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!


CHL will be closed December 23rd to December 26th and January 2 for the holidays. Please contact us for more details about our services and special shipping instructions for the month of December.

Student Research Grant

CHL offers up to $1000 in support for students working on dye tracing projects.


Interested in what we’ve been up to? Check out CHL in the NEWS!